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Dibrugarh

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Upper Assam is an administrative division of the state of Assam comprising the undivided Lakhimpur and Sivasagar (previously, Sibsagar) districts, of the upper reaches of the Brahmaputra valley . The other divisions are: Lower Assam , North Assam and Hills and Barak Valley . The division is under the jurisdiction of a Commissioner, stationed at Jorhat .

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68-674: Dibrugarh (pron: ˌdɪbru:ˈgɑ:) is a city in Upper Assam with sprawling tea gardens . It is located 435 kms East from the state capital of Dispur . It serves as the headquarters of Dibrugarh district in the state of Assam in India. Dibrugarh serves as the headquarters of the Sonowal Kachari Autonomous Council, which is the governing council of the Sonowal Kachari tribe (found predominantly in

136-408: A CM Secretariat at Dibrugarh. An extended list of Upper – Assam region also includes the districts of Sonitpur , Karbi Anglong & Nagaon . The region is the most productive part of the state of Assam, which is rich in natural resources like coal , oil and natural gas as well as tea plantations. In 1318, Si Kefa, the ruler of Mongmao after conquering southeast states till Lancang river from

204-575: A Tai prince from Mong Mao , it began as a Mong in the upper reaches of the Brahmaputra river . It expanded suddenly under Suhungmung in the 16th century after annexing the Chutia kingdom and parts of Kachari kingdom and therefore became multi-ethnic in character. The kingdom became weaker with the rise of the Moamoria rebellion , and subsequently fell to a succession of Burmese invasions . With

272-408: A catalyst under high heat and pressure. To be classified as green methanol, the hydrogen must be green hydrogen , which is produced using renewable electricity. Additionally, the carbon dioxide in this process must be a product of carbon capture and storage or direct air capture or biomass of recent origin. Some definitions of green methanol specify that the carbon dioxide must be captured during

340-603: A high power transmitter. Dibrugarh Doordarshan Kendra is contributing programmes to the 'DD North East' channel. Dibrugarh has been a pioneer of newspaper journalism in entire Eastern India with the Times of Assam being the first newspaper published from Dibrugarh in the late nineteenth century. After four decades of publication, Times of Assam ceased to publish and from 1939 The Assam Tribune started its journey from Dibrugarh, which after 7 years of publication from Dibrugarh, shifted to Guwahati. However, this premier English daily of

408-454: A host of more specialised chemicals. Small amounts of methanol are present in normal, healthy human individuals. One study found a mean of 4.5  ppm in the exhaled breath of test subjects. The mean endogenous methanol in humans of 0.45 g/d may be metabolized from pectin found in fruit; one kilogram of apple produces up to 1.4 g of pectin (0.6 g of methanol.) Methanol is produced by anaerobic bacteria and phytoplankton . Methanol

476-473: A liquid, it is easier to store than hydrogen and natural gas. Its energy density is, however, lower than methane , per kg. Its combustion energy density is 15.6 MJ / L ( LHV ), whereas that of ethanol is 24 and gasoline is 33 MJ/L. Further advantages for methanol is its ready biodegradability and low environmental toxicity. It does not persist in either aerobic (oxygen-present) or anaerobic (oxygen-absent) environments. The half-life for methanol in groundwater

544-468: A major transit point for tourists from both India and abroad. Such tourist circuits include – Dibrugarh – Roing – Mayudia – Anini Tourist Circuit, Dibrugarh – Guwahati river cruise besides 'Tea Tourism' for tourists who prefer serenity and novelty to the hustle-bustle of established tourist destinations. Some important tourist sites of the city are: Dibrugarh Airport , which is located around 15 km from Dibrugarh town at Mohanbari. Airlines operating from

612-501: A means to convert synthesis gas (a mixture of carbon monoxide , carbon dioxide , and hydrogen ) into methanol and received a patent. According to Bozzano and Manenti, BASF's process was first utilized in Leuna , Germany in 1923. Operating conditions consisted of "high" temperatures (between 300 and 400 °C) and pressures (between 250 and 350 atm) with a zinc / chromium oxide catalyst. US patent 1,569,775 ( US 1569775   )

680-455: A methanol economy is that it could be adapted to gasoline internal combustion engines with minimum modification to the engines and to the infrastructure that delivers and stores liquid fuel. Its energy density, however, is less than gasoline, meaning more frequent fill ups would be required. However, it is equivalent to super high-octane gasoline in horsepower, and most modern computer-controlled fuel injection systems can already use it. Methanol

748-544: A planet-forming disc around the young star TW Hydrae using the Atacama Large Millimeter Array radio telescope. In their embalming process, the ancient Egyptians used a mixture of substances, including methanol, which they obtained from the pyrolysis of wood. Pure methanol, however, was first isolated in 1661 by Robert Boyle , when he produced it via the distillation of buxus (boxwood). It later became known as "pyroxylic spirit". In 1834,

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816-571: A population of 154,296 according to a 2011 census. The Dibrugarh metropolitan areas include Barbari (AMC AREA), Dibrugarh, and Mahpowalimara Gohain Gaon. Languages spoken in Dibrugarh city (2011) Dibrugarh city have a population of 154,296 as per 2011 census. Assamese is spoken by 64,223 people, Bengali at 36,283, Hindi at 33,011, Bhojpuri by 5,533 people, Nepali at 1,609 and 11,911 people speaks other languages. The first oil well dug during

884-460: A process closely related to methanol production from synthesis gas, a feed of hydrogen and CO 2 can be used directly. The main advantage of this process is that captured CO 2 and hydrogen sourced from electrolysis could be used, removing the dependence on fossil fuels. The catalytic conversion of methane to methanol is effected by enzymes including methane monooxygenases . These enzymes are mixed-function oxygenases, i.e. oxygenation

952-402: A project cost of ₹ 54.6 billion, in which the capital subsidy is ₹ 21.4 billion. The project was scheduled for completion in 60 months. However, the commissioning of the project has been pushed to December 2013, and the cost has escalated to ₹ 92.8 million. The site selected for Assam Gas Cracker Project is at Lepetkata, 15 km from Dibrugarh on NH-37 . A joint-venture agreement

1020-433: A prominent place in the history of Indian Railways with the first railway services of the entire North-East India starting from here. On 1 May 1882, the first train rolled down the tracks from Streamerghat at Dibrugarh. On 15 May 1882, it was extended up to Dinjan. On 23 December that year goods train up to Chabua was introduced. On 18 February 1884, at 7:20 am, the then Chief Commissioner of Assam Sir Charles Illiot flagged off

1088-406: A small amount of methanol is added to wastewater to provide a carbon food source for the denitrifying bacteria , which convert nitrates to nitrogen gas and reduce the nitrification of sensitive aquifers . Methanol is used as a destaining agent in polyacrylamide gel electrophoresis . Carbon monoxide and hydrogen react over a catalyst to produce methanol. Today, the most widely used catalyst

1156-496: Is a Bengali daily published from Dibrugarh along with Guwahati and Silchar. Dibrugarh is part of Dibrugarh (Lok Sabha constituency) . Sarbananda Sonowal of Bharatiya Janata Party is the current Member of Parliament from Dibrugarh. Former Chief Ministers of Assam, Sarbananda Sonowal & Jogendra Nath Hazarika hailed from Dibrugarh. BJP's Prasanta Phukan is the incumbent MLA of Dibrugarh (Vidhan Sabha constituency) . Upper Assam Consisting of 7 districts initially,

1224-457: Is a mixture of copper and zinc oxides , supported on alumina , as first used by ICI in 1966. At 5–10 MPa (50–100 atm) and 250 °C (482 °F), the reaction is characterized by high selectivity (>99.8%). The production of synthesis gas from methane produces three moles of hydrogen for every mole of carbon monoxide, whereas the synthesis consumes only two moles of hydrogen gas per mole of carbon monoxide. One way of dealing with

1292-409: Is also a widely used fuel in camping and boating stoves. Methanol burns well in an unpressurized burner, so alcohol stoves are often very simple, sometimes little more than a cup to hold fuel. This lack of complexity makes them a favorite of hikers who spend extended time in the wilderness. Similarly, the alcohol can be gelled to reduce risk of leaking or spilling, as with the brand " Sterno ". Methanol

1360-469: Is also found in abundant quantities in star-forming regions of space and is used in astronomy as a marker for such regions. It is detected through its spectral emission lines. In 2006, astronomers using the MERLIN array of radio telescopes at Jodrell Bank Observatory discovered a large cloud of methanol in space 0.463 terametres (288 million miles) across. In 2016, astronomers detected methanol in

1428-531: Is an alternative fuel for ships that helps the shipping industry meet increasingly strict emissions regulations. It significantly reduces emissions of sulfur oxides (SOx), nitrogen oxides (NOx) and particulate matter. Methanol can be used with high efficiency in marine diesel engines after minor modifications using a small amount of pilot fuel (dual fuel). In China, methanol fuels industrial boilers, which are used extensively to generate heat and steam for various industrial applications and residential heating. Its use

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1496-403: Is an organic chemical compound and the simplest aliphatic alcohol , with the chemical formula C H 3 O H (a methyl group linked to a hydroxyl group , often abbreviated as MeOH ). It is a light, volatile , colorless and flammable liquid with a distinctive alcoholic odor similar to that of ethanol (potable alcohol), but is more acutely toxic than the latter. Methanol acquired

1564-494: Is between two and three times larger than man-made industrial production of methanol. As of 2023, 0.2% of global methanol production is produced in ways that have relatively low greenhouse gas emissions; this is known as "green" methanol. Most green methanol is produced from gasification of biomass . Syngas is produced from biomass gasification and further converted into green methanol. Another method of producing green methanol involves combining hydrogen, carbon dioxide, and

1632-471: Is coupled with production of water and NAD : Both Fe- and Cu-dependent enzymes have been characterized. Intense but largely fruitless efforts have been undertaken to emulate this reactivity. Methanol is more easily oxidized than is the feedstock methane, so the reactions tend not to be selective. Some strategies exist to circumvent this problem. Examples include Shilov systems and Fe- and Cu-containing zeolites. These systems do not necessarily mimic

1700-451: Is displacing coal, which is under pressure from increasingly stringent environmental regulations. Direct-methanol fuel cells are unique in their low temperature, atmospheric pressure operation, which lets them be greatly miniaturized. This, combined with the relatively easy and safe storage and handling of methanol, may open the possibility of fuel cell-powered consumer electronics , such as laptop computers and mobile phones. Methanol

1768-430: Is estimated that China used as much as 7 million tons of methanol as transportation fuels, representing over 5% of their fuel pool. Methanol is the precursor to most simple methylamines , methyl halides , and methyl ethers. Methyl esters are produced from methanol, including the transesterification of fats and production of biodiesel via transesterification . Methanol is a promising energy carrier because, as

1836-471: Is just one to seven days, while many common gasoline components have half-lives in the hundreds of days (such as benzene at 10–730 days). Since methanol is miscible with water and biodegradable, it is unlikely to accumulate in groundwater, surface water, air or soil. Methanol is occasionally used to fuel internal combustion engines . It burns forming carbon dioxide and water: Methanol fuel has been proposed for ground transportation. The chief advantage of

1904-510: Is mixed with water and injected into high performance diesel and gasoline engines for an increase of power and a decrease in intake air temperature in a process known as water methanol injection . Methanol is used as a denaturant for ethanol, the product being known as "denatured alcohol" or "methylated spirit". This was commonly used during the US prohibition to discourage consumption of bootlegged liquor, and ended up causing several deaths. It

1972-539: Is sometimes used as a fuel in alcohol lamps, portable fire pits and camping stoves. Methanol is used as a solvent and as an antifreeze in pipelines and windshield washer fluid . Methanol was used as an automobile coolant antifreeze in the early 1900s. As of May 2018, methanol was banned in the EU for use in windscreen washing or defrosting due to its risk of human consumption as a result of 2012 Czech Republic methanol poisonings . In some wastewater treatment plants ,

2040-627: Is the basis of several technologies related to gas to liquids . These include methanol-to-hydrocarbons (MtH), methanol to gasoline (MtG), methanol to olefins (MtO), and methanol to propylene (MtP). These conversions are catalyzed by zeolites as heterogeneous catalysts . The MtG process was once commercialized at Motunui in New Zealand. The European Fuel Quality Directive allows fuel producers to blend up to 3% methanol, with an equal amount of cosolvent, with gasoline sold in Europe. In 2019, it

2108-939: Is the biggest railway station in the entire north east spreading over 400 bighas of land and it is 2 km in length. One goods yard is also being developed for loading and unloading of goods along with a truck shed, which can accommodate 25 trucks at a time. Dibrugarh also possesses a developed waterway transportation system along and across the Brahmaputra River , known as the National Waterway 2 which extends from Bangladesh Border to Sadiya . Ferry services link Dibrugarh with Sengajan (Dhemaji District), Panbari (Dhemaji) & Oiram Ghat (near Jonai Dhemaji). From Bogibeel IWT Ghat there are regular ferry Services to Kareng Chapori & Sisi Mukh. Moreover, luxury cruise services are also available from Dibrugarh to Guwahati . The cruise to Dibrugarh passes through Tezpur and

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2176-525: The Kaziranga National Park . Dibrugarh has a full-fledged All India Radio centre, All India Radio, Dibrugarh broadcasting in both AM (567 kHz at 529.1 metres of MW) and FM (101.30 MHz) bands airing three transmissions a day along with a 5-minute regional news bulletin at 6:00 pm every day. All India Radio, Dibrugarh was commissioned way back on 15 February 1968. The station has its studios located at Malakhubosa in Dibrugarh and

2244-593: The Ministry of Petroleum and Natural Gas , in 2010. The Assam Gas Cracker Project, also known as Brahmaputra Cracker and Polymer Limited, was proposed as a part of implementation of Assam Accord signed by Government of India on 15 August 1985. The Assam Gas Cracker Project was approved by the Cabinet Committee on Economic Affairs, in its meeting held on 18 April 2006, under an equity arrangement of GAIL (70%), OIL (10%), NRL (10%) and Govt. of Assam (10%) with

2312-560: The Monsanto acetic acid synthesis , Cativa process , and Tennessee Eastman acetic anhydride process . Methanol is primarily converted to formaldehyde, which is widely used in many areas, especially polymers . The conversion entails oxidation: Acetic acid can be produced from methanol. Methanol and isobutene are combined to give methyl tert -butyl ether (MTBE). MTBE is a major octane booster in gasoline. Condensation of methanol to produce hydrocarbons and even aromatic systems

2380-566: The Yuan dynasty , appointed his brother Sanlongfa as the general and led an army of 90,000 to attack the king of Mengwei Sari (Upper Assam) in the northwest. In the end, he designed a plan to make Mengwei Sari surrender and was made a tributary state of Mongmao with the capital in Ruili . Suklenmung who intervened against a Toungoo dynasty attack on MongKwang in Kachin State of Myanmar

2448-420: The liver , kidneys , and heart if swallowed – Toxicity effects from repeated over exposure have an accumulative effect on the central nervous system , especially the optic nerve – Symptoms may be delayed, become severe after 12 to 18 hours, and linger for several days after exposure 385 °C (725 °F; 658 K) Methanol (also called methyl alcohol and wood spirit , amongst other names)

2516-432: The 2011 India census, Dibrugarh city had a population of 154,296. Males constituted 54% of the population and females 46%. The sex ratio of Dibrugarh city was 961 per 1000 males. The average literacy rate of Dibrugarh is 89.5%, which is higher than the national average literacy rate. In Dibrugarh, 9% of the population is between 0 and 6 years of age, and the child ratio of girls is 940 per 1000 boys. Dibrugarh city area has

2584-579: The British era was in Digboi , 50 miles (80 km) from Dibrugarh. Today, Duliajan , Dikom, Tengakhat and Moran are the key locations for oil and gas industry in the district. Oil India Limited , the second public sector company in India engaged in exploration and transportation of crude oil has its field headquarters in Duliajan , 50 km from Dibrugarh city. The company was granted Navratna status by

2652-480: The Dibrugarh district). The historic town of Dibrugarh was formally announced as 2nd City of Assam on 7 March 2024 with the formation of Dibrugarh Municipal Corporation by dissolving The Municipal Board Dibrugarh derived its name from Dibarumukh. Either the name "Dibru" evolved from Dibaru river or from the Tibeto-Burman word "Dibru" which means a "blister" and "Garh" meaning "fort". The Tibeto-Burman add

2720-501: The French Chemists Jean-Baptiste Dumas and Eugene Peligot determined its elemental composition. They also introduced the word "methylène" to organic chemistry, forming it from Greek methy = "alcoholic liquid" + hȳlē = "forest, wood, timber, material". "Methylène" designated a "radical" that was about 14% hydrogen by weight and contained one carbon atom. This would be CH 2 , but at

2788-530: The North-East India, The Assam Tribune is published from Dibrugarh along with Guwahati and The Sentinel is published from Dibrugarh along with four other cities of North-East India. Several vernacular, as well English and Bengali dailies are published from Dibrugarh. Assamese newspapers published from Dibrugarh are Asomiya Pratidin , Janasadharan , Niyomiya Barta , Dainik Asam , Dainik Pratikshan and Pratibimba , [1] . Jugashangkha

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2856-469: The Upper – Assam division now contains 10 districts, that includes Biswanath , Jorhat , Dibrugarh , Dhemaji , Golaghat , Charaideo , Lakhimpur , Majuli , Sivasagar , and Tinsukia . While Charaideo and Majuli are the newest districts that were raised to district status in 2016, Golaghat and Tinsukia are the biggest districts in terms square kilometre area in the region, raised to the district status in

2924-412: The airport are Air India , IndiGo , Vistara , SpiceJet and Pawan Hans . IndiGo connects Dibrugarh daily with Delhi via Kolkata and another non-stop to Delhi while in return via Guwahati. SpiceJet connects Dibrugarh daily with Guwahati and Kolkata. In 2013, Dibrugarh airport was provided with night landing facility. Commercial operation of aerobridges have also started in this airport. Dibrugarh holds

2992-514: The burning of bioenergy . Methanol is available commercially in various purity grades. Commercial methanol is generally classified according to ASTM purity grades A and AA. Both grade A and grade AA purity are 99.85% methanol by weight. Grade "AA" methanol contains trace amounts of ethanol as well. Methanol for chemical use normally corresponds to Grade AA. In addition to water, typical impurities include acetone and ethanol (which are very difficult to separate by distillation). UV-vis spectroscopy

3060-578: The city and also two of the important easternmost railway stations on the map of the Indian Railways connected to some of the important Indian cities like Bangalore , Chennai , Kochi , Trivandrum , Kolkata , Delhi , Kanyakumari etc. through the railways network. The new Dibrugarh railway station has been developed on the outskirts of the city at Banipur. It lies on the Lumding-Dibrugarh section of Tinsukia railway division . It

3128-685: The commander Mingimaha Tilwa in charge of the area who appointed Jogeswar Singha as the new puppet King in 1821 in Jorhat. Later when the deposed king Chandrakanta Singha tried to fight back, Bagyidaw (1819 – 1837), the seventh King of Burma sent the greatest of his generals Mingimaha Bandula with 20,000 troops (including 10,000 Kamti Shan and Kachin levies who were chieftains of Mongkawng and Hukawng ) who defeated Chandrakanta Singha at Mahgarh near Jorhat and reestablished Burmese authority in Assam. The defeat of Chandrakanta on 12 June 1822 marks

3196-597: The defeat of the Burmese after the First Anglo-Burmese War and the Treaty of Yandabo in 1826, control of the kingdom passed into British ( East India Company ) hands. The Upper Assam division, comprising 24 percent of Assam's population at 7.56 million, predominantly adheres to Hinduism embraced by nearly 90 percent of its people with Islam being the second most practiced religion. More than 60 percent of

3264-528: The entire region of present Assam districts of Lakhimpur , Dhemaji , Tinsukia and Dibrugarh as well as parts of Sonitpur , Golaghat , Jorhat and Sibsagar districts. In Arunachal Pradesh, it covered the districts bordering Assam. The Ahom Kingdom was a kingdom in the Brahmaputra valley in Assam that maintained its sovereignty for nearly 600 years and successfully resisted Mughal expansion in North-East India . Established by Sukaphaa ,

3332-427: The excess hydrogen is to inject carbon dioxide into the methanol synthesis reactor, where it, too, reacts to form methanol according to the equation In terms of mechanism, the process occurs via initial conversion of CO into CO 2 , which is then hydrogenated : where the H 2 O byproduct is recycled via the water-gas shift reaction This gives an overall reaction which is the same as listed above. In

3400-572: The first passenger train from Reehabari rail station (now Dibrugarh Town Railway station) to Ledo with 400 European and Indian passengers. As per the Centenary Souvenir of the Assam Railways and Trading Company Limited published in 1991, the said company, being the pioneer in building Dibru–Sadiya Railway , described the entire history of railway development from Dibrugarh. Dibrugarh Town and Dibrugarh are two railway stations of

3468-819: The headquarters of the Directorate of Development of Small Tea Growers in India is functioning from Dibrugarh, besides a Regional Office of the Tea Board of India headed by a deputy director of Tea Development (Plantation) is also located in the city. The Zone I of the Assam Branch Indian Tea Association (ABITA) is located at Dibrugarh. Rail, road and air connectivity coupled with the presence of large number of tourist spots in and around Dibrugarh city has seen impressive growth of tourism industry in this part of India in recent part. Dibrugarh has also become an important destination as well as

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3536-653: The high power transmission tower located at Lepetkata near the present Brahmaputra Cracker and Polymer Limited site. As for television viewing, the second Doordarshan centre of Assam, telecasting programmes in Assamese language, Doordarshan Kendra, Dibrugarh was established in the city in the year 1993. Earlier the Kendra used to telecast Assamese language programmes capsuled in Guwahati beginning 20 December 1991. The programmes produced in this Kendra are telecast through

3604-466: The largest producer of methanol in India. The required feedstock for these plants are natural gas , urea and carbon dioxide . Natural gas, supplied by Oil India Ltd, is used as feedstock for methanol production. Urea and carbon dioxide are supplied by Namrup Fertilizer Plant. Dibrugarh hosts several tea gardens dating back to the British era. The first garden was at Chabua, a place 20 miles (32 km) away from Dibrugarh, owned by Maniram Devaan. Today,

3672-463: The mechanisms employed by metalloenzymes , but draw some inspiration from them. Active sites can vary substantially from those known in the enzymes. For example, a dinuclear active site is proposed in the sMMO enzyme, whereas a mononuclear iron ( alpha-oxygen ) is proposed in the Fe-zeolite. Global emissions of methanol by plants are estimated at between 180 and 250 million tons per year. This

3740-461: The mid-1990s, over 20,000 methanol " flexible fuel vehicles " (FFV) capable of operating on methanol or gasoline were introduced in the US In addition, low levels of methanol were blended in gasoline fuels sold in Europe during much of the 1980s and early-1990s. Automakers stopped building methanol FFVs by the late-1990s, switching their attention to ethanol-fueled vehicles. While the methanol FFV program

3808-500: The name wood alcohol because it was once produced chiefly by the destructive distillation of wood . Today, methanol is mainly produced industrially by hydrogenation of carbon monoxide . Methanol consists of a methyl group linked to a polar hydroxyl group. With more than 20 million tons produced annually, it is used as a precursor to other commodity chemicals , including formaldehyde , acetic acid , methyl tert-butyl ether , methyl benzoate , anisole , peroxyacids , as well as

3876-468: The people speak Assamese with a sizeable Bengali and Hindi minority. The major communities of Upper assam are Ahom , Chutia , Tea tribes , Mishing , Sonowal Kacharis , Moran, Matak, Deori , Thengal Kacharis and indigenous Assamese Muslim communities like Gorias Morias . Methanol Moderately toxic for small animals – Highly toxic to large animals and humans (in high concentrations) – May be fatal/ lethal or cause blindness and damage to

3944-421: The prefix "Di-" (which means "water") wherever there is small stream, a river, or a large river in a town or city. Dibrugarh became a separate district when it was split from Lakhimpur on 2 October 1971. On 1 October 1989 Tinsukia district was split from Dibrugarh. Dibrugarh has a humid subtropical climate ( Köppen climate classification Cwa ) with extremely wet summers and relatively dry winters. As of

4012-456: The start of the Burmese rule in Assam. and Burmese commander Mingimaha Tilwa was made the king. Maha Bandula then returned to Ava in Myanmar . The medieval Chutia Kingdom was on the bank of the river Brahmaputra . It was a powerful kingdom which had ruled in northeastern Assam and some areas of present-day Arunachal Pradesh , with the capital at Sadiya . The kingdom controlled almost

4080-436: The time carbon was thought to have an atomic weight only six times that of hydrogen, so they gave the formula as CH. They then called wood alcohol (l'esprit de bois) "bihydrate de méthylène" (bihydrate because they thought the formula was C 4 H 8 O 4 or (CH) 4 (H 2 O) 2 ). The term "methyl" was derived in about 1840 by back-formation from "methylene", and was then applied to describe "methyl alcohol". This

4148-510: The years of 1987 and 1989 respectively. Dibrugarh, Golaghat and Jorhat are also the oldest recognised and constantly inhabited urban centres (municipal areas) in the region based on the earliest years of formation of the civic bodies, constituted before the Indian independence of 1947. After Guwahati Dibrugarh is officially recognised as a second city of Assam by formation of Dibrugarh Municipal Corporation and Government of Assam will establish

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4216-417: Was a technical success, rising methanol pricing in the mid- to late-1990s during a period of slumping gasoline pump prices diminished interest in methanol fuels . In the early 1970s, a process was developed by Mobil for producing gasoline fuel from methanol. Between the 1960s and 1980s methanol emerged as a precursor to the feedstock chemicals acetic acid and acetic anhydride . These processes include

4284-436: Was applied for on 4 September 1924 and issued on 12 January 1926 to BASF; the process used a chromium and manganese oxide catalyst with extremely vigorous conditions: pressures ranging from 50 to 220 atm , and temperatures up to 450 °C. Modern methanol production has been made more efficient through use of catalysts (commonly copper) capable of operating at lower pressures. The modern low pressure methanol (LPM) process

4352-402: Was developed by ICI in the late 1960s US 3326956   with the technology patent long since expired. During World War II , methanol was used as a fuel in several German military rocket designs, under the name M-Stoff , and in a roughly 50/50 mixture with hydrazine , known as C-Stoff . The use of methanol as a motor fuel received attention during the oil crises of the 1970s . By

4420-622: Was incorporated in 1971 and by 1976 had started production at their small methanol plant located at Namrup along with formaldehyde and a few urea-formaldehyde resins like urea-formaldehyde glue and urea-formaldehyde moulding powder. Post expansion in 1989 and 1998, the company expanded the methanol plant to the capacity of 100TPD (tonnes per day) and formaldehyde plant to 100TPD. The company announced in September 2017 that it would invest ₹ 1,337 crore (US$ 160 million) and expand to produce 500TPD methanol and 200TPD formalin and become

4488-541: Was married to the princess Nang Sao Seng, the daughter of Chao Siu-Kwei of MongKwang. It is said that the Ahom capital Garhgoan was built at the suggestion of this Mong Kwang queen Nang Sao Seng. In 1575, the king of Mongkwang, Chao Ka Pha II took shelter in Ahom territory after his state was devastated by the Burmese. The region was occupied by the Burmese Konbaung dynasty between 1817 - 1825. The Burmese left

4556-675: Was shortened to "methanol" in 1892 by the International Conference on Chemical Nomenclature . The suffix -yl , which, in organic chemistry , forms names of carbon groups, is from the word methyl . French chemist Paul Sabatier presented the first process that could be used to produce methanol synthetically in 1905. This process suggested that carbon dioxide and hydrogen could be reacted to produce methanol. German chemists Alwin Mittasch and Mathias Pier, working for Badische-Anilin & Soda-Fabrik (BASF), developed

4624-422: Was signed on 18 October 2006, and the company Brahmaputra Cracker and Polymer Limited was registered on 8 January 2007. Manmohan Singh, the prime minister of India, laid the foundation stone of this project on 9 April 2007. Assam Petro-Chemicals is a semi-governmental Indian company with major stakes held by Government of Assam , Oil India Limited and Assam Industrial Development Corporation (AIDC). The company

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