How To Use Hydrogenation In A Sentence
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In the development of better asymmetric hydrogenation catalysts it is important to increase the energy difference between the transition complexes in order to obtain, as a consequence, larger enantiomeric excess.
The Nobel Prize in Chemistry 2001 - Information for the Public
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At that time, however, it was commonly believed that expressing the cDNA in living organisms would not produce fluorescent GFP, because the formation of its chromophore requires the reactions of condensation and dehydrogenation that are not expected to occur spontaneously.
Osamu Shimomura - Autobiography
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In addition to cracking, catalytic activities include dehydrogenation, hydrogenation, and isomerization.
Cracking
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This process is called hydrogenation, because it adds hydrogen atoms to the unsaturated chains.
On Food and Cooking, The Science and Lore of the Kitchen
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One example of the use of hydrogen atom transfer in organic synthesis is hydrogenation, i.e. the addition of hydrogen to a carbon-carbon double bond.
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In 1913, the German chemist Friedrich Bergius first succeeded in extracting a liquid from coal in a process that became known as hydrogenation.
The Prize
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Most of the synthetic fuels were produced by hydrogenation and Fischer-Tropsch, but also included alcohol, benzol, and the product of coal tar distillation.
The Prize
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Dyson and Welton used water and ionic liquid soluble organometallic clusters and complexes to catalyse hydrogenation of the aromatics.
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The award to Wieland was primarily for his investigations of bile acids, whereas Windaus was recognized mainly for his work on cholesterol and his demonstration of the steroid nature of vitamin D. Wieland had already in 1912, before his prize-winning work, formulated a theory for biological oxidation, according to which removal of hydrogen (dehydrogenation) rather than reaction with oxygen is the dominating process.
The Nobel Prize in Chemistry: The Development of Modern Chemistry
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Dehydrogenation is the commercial process for preparing toluene from heptane as given above.
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The operation of coking gasoline hydrogenation plant is difficult.
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Manufacture of ketones can also be carried out by the dehydrogenation of a secondary alcohol at high temperature.
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Dyson and Welton used water and ionic liquid soluble organometallic clusters and complexes to catalyse hydrogenation of the aromatics.
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Secondary products from high pressure hydrogenation of crambe oil.
Chapter 5
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Listed are several of these oxidizing reactions. alcohol dehydrogenation aldehyde dehydrogenation alkyl/acyclic hydroxylation aromatic hydroxylation deamination desulfuration
Biotransformation
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Manufacture of ketones can also be carried out by the dehydrogenation of a secondary alcohol at high temperature.
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At a temperature of between 250° and 300°C powdered copper very conveniently brings about dehydrogenation of primary alcohols into aldehydes and of secondary alcohols into acetones, and this is a very useful practical method of effecting this transformation.
Paul Sabatier - Nobel Lecture
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Hydrogenation allowed manufacturers to make a butter substitute that spreads easily even at refrigerator temperature, where butter is unusably hard.
On Food and Cooking, The Science and Lore of the Kitchen
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Benzene is manufactured industrially by dehydrogenation and dealkylation of appropriate fractions of petroleum.
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In addition to cracking, catalytic activities include dehydrogenation, hydrogenation, and isomerization.
Cracking
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He has also been concerned with work on the constitution of unsaturated compounds by quantitative ozonization, condensation of aldehydes and ketones, ketone splitting of tertiary alcohols, the cracking of hydrocarbons in presence of aluminium chloride and catalytic hydrogenation and dehydrogenation processes under reduced pressures.
Victor Grignard - Biography
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I discovered turned out to be quite useful for asymmetric hydrogenation, at least those that contained the appropriate enantiomerically pure phosphine ligand.
Richard R. Schrock - Autobiography
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The simplest type of oxidation reaction is dehydrogenation, that is the removal of hydrogen from the molecule.
Biotransformation
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The entire process simulation - alcohol dehydrogenation, carbonyl polishing and distillation - was operated continuously for eight weeks.
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For example, nickel is a catalyst in the hydrogenation of vegetable oils.
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Raney-Ni is known to be a very active catalyst for hydrogenation and a pyrophoric material, indeed a dangerous one to be handled with care that has on occasion exploded.
Rabett Run
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In 1913, the German chemist Friedrich Bergius first succeeded in extracting a liquid from coal in a process that became known as hydrogenation.
The Prize
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Many of the carbon compounds found in crude petroleum may contain multiple bonds, but can be converted to saturated compounds by catalytic hydrogenation.
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The highly selective hydrogenation process for the removal of olefins can completely replace the conventional clay treating process for treating the reformate of CCR unit.
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A second dehydrogenation turns acetaldehyde into acetic acid, aka vinegar, which gets digested as usual.
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The Bergius hydrogenation process was deemed the better of the two.
The Prize
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An example that Blackmond often uses is the asymmetric hydrogenation of the allylic alcohols geraniol and its isomers (g geraniol and nerol).
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The reason for the enantiomeric excess is to be found in the hydrogenation stage, as the hydrogen can be added in two ways that give the different enantiomers at different rates.
The Nobel Prize in Chemistry 2001 - Information for the Public
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He has also been concerned with work on the constitution of unsaturated compounds by quantitative ozonization, condensation of aldehydes and ketones, ketone splitting of tertiary alcohols, the cracking of hydrocarbons in presence of aluminium chloride and catalytic hydrogenation and dehydrogenation processes under reduced pressures.
Victor Grignard - Biography
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If this theory is correct, it can be deduced that nickel and the other active metals (copper, cobalt, iron, platinum) must be capable not only of fixing free hydrogen, but must also take hydrogen from such substances as are capable of giving it up, and that consequently they must be dehydrogenation catalysts.
Paul Sabatier - Nobel Lecture
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I had lunch with a physicist friend this afternoon and, look, I know very little about physics, but I was totally envious that he gets to spend his days thinking about stuff that not everyone is equipped to think about, and gets to try and solve problems that actually matter to the world (he's doing something with carbon dioxide and turning it into a liquid so that it can be turned into a gas again -- the point being to save the Earth in some way, the details beyond that have escaped me but he used the word hydrogenation a couple of times).
Jeremy Blachman's Weblog: 2009
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Addition Reactions to Alkynes, Hydrogenation , Halogenation and HX. Hydration of alkynes. Tautomerization.
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Knowles 'hypothesis was that it might be possible to produce a catalyst for asymmetric hydrogenation if the triphenylphosphine groups in Osborn and Wilkinson's metal complex
The Nobel Prize in Chemistry 2001 - Information for the Public
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Hydrogenation turns oils into semi-solid fats that are resistant to spoilage and thus give products a longer shelf life.
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In 1931, German science and, in particular, hydrogenation received the highest accolade: Bergius, the inventor of the hydrogenation technique, and Carl Bosch, the chairman of I. G. Farben, shared the Nobel Prize in chemistry.
The Prize
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Catalytic hydrogenation adds six hydrogen atoms to produce cyclohexane, a colorless liquid with the properties of an alkane.
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Benzene is manufactured industrially by dehydrogenation and dealkylation of appropriate fractions of petroleum.
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To my understanding, hydrogenation is what "hardens" oils to a semi-solid state.
BC Bloggers
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Unsaturated fats may be chemically modified by a process called hydrogenation.
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An example that Blackmond often uses is the asymmetric hydrogenation of the allylic alcohols geraniol and its isomers (g geraniol and nerol) carried out while she was at Merck.
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Now, the big problem for soybeans that produce oil that doesn’t require hydrogenation is making enough to satisfy demand.
Dr. Fehr’s Bean Oil Trumps Trans Fat | Impact Lab
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Reforming represents the total effect of numerous reactions such as cracking, polymerization, dehydrogenation, and isomerization taking place simultaneously (Figure 9).
Cracking
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Oils based on the new generation would fall below a critical cut-off point under which no hydrogenation is necessary.
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This can be done through chemical processing such as 'hydrogenation' or 'interesterification'.
Times, Sunday Times
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A second dehydrogenation turns acetaldehyde into acetic acid, aka vinegar, which gets digested as usual.
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Screw lock ring heat exchangers as main equipments are used in hydrogenation cracking plant which have many shortcomings.
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Due to its natural semi-solid consistency, palm oil does not need to go through the hydrogenation process which creates trans-fatty acids.
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Trans fat is made by adding hydrogen to vegetable oil through a process called hydrogenation," according to the Mayo Clinic.
FOXNews.com
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The understanding of many important chemistries is being advanced by the use of ReactIR ™ because it provides detailed information about key reactive species and their concentrations under a range of challenging environments including organometallic, polymer, hydroformylation, carbonylation and hydrogenation chemistries, among others.
PRWeb - Daily News Feed
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Thus the concept of a temporary compound prompted me to use finely divided metals, first as hydrogenation catalysts and then as dehydrogenation catalysts.
Paul Sabatier - Nobel Lecture
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Thus benzyl alcohol may be classified either as an alcohol, or as an aromatic benzene derivative, since it participates in the characteristic reactions of the latter, such as electrophilic aromatic substitution or hydrogenation of the benzene ring.
Natural Kinds
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During the deodorization process a portion of the canola oil undergoes partial hydrogenation, a fact published in a couple of technical oil processing papers.
Blink | The Blog of Michael R. Eades, M.D.
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Bergius used high-pressure methods to prepare oil by the hydrogenation of coal, and Bosch, like Bergius working at the large concern I.G. Farben, later improved the procedure by finding a good catalyst for the Bergius process.
The Nobel Prize in Chemistry: The Development of Modern Chemistry
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The dehydrogenation and selective hydrogenation reactors were run continuously and the product collected.
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The paper discussed main factors effecting acid conversion during carboxylic acid hydrogenation.
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Listed are several of these oxidizing reactions. alcohol dehydrogenation aldehyde dehydrogenation alkyl/acyclic hydroxylation aromatic hydroxylation deamination desulfuration
Biotransformation
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Industrially, they are mainly manufactured as the products of the dehydrogenation, or oxidation, of secondary alcohols.
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Noyori asymmetric hydrogenation is the asymmetric reduction of β-keto-esters Amines can be converted to diazonium salts which are then hydrolyzed.
Recently Uploaded Slideshows
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In 1968 William Knowles was the first who was able to demonstrate that chirally catalyzed hydrogenation is feasible.
The Nobel Prize in Chemistry 2001 - Presentation Speech
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The mechanism of dehydrogenation of secondary butanol and the catalyst characteristics and regeneration steps were introduced.
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The company's catalytic asymmetric transfer hydrogenation process, dubbed CATHy, offers a route to chiral alcohols and amines, while its carbon-carbon bond forming technology, known as CACHy, is said to improve the economics of chiral cyanohydrin synthesis.
Purchasing - Top Stories
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Process for selective hydrogenation of highly unsaturated compounds and isomerization of olefins in hydrocarbon streams
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Listed are several of these oxidizing reactions. alcohol dehydrogenation aldehyde dehydrogenation alkyl/acyclic hydroxylation aromatic hydroxylation deamination desulfuration
Biotransformation
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TRANS FATS TRANS FATTY ACIDS–Almost all the trans fat found in food is created by passing hydrogen gas through vegetable oil, a process called hydrogenation, which makes oils harder and more stable.
The Most Complete Food Counter, 2nd Edition
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The H-Cube Continuous-flow Hydrogenation Reactor is a bench-top standalone hydrogenation device, uniquely combining continuous-flow microchemistry with endogenous on-demand hydrogen generation and a disposable catalyst cartridge system.
Marketwire - Breaking News Releases
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This effect of diphenylamine has been interpreted as blocking a series of dehydrogenation steps in the transformation of the more saturated to the less saturated carotenoids.
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food producers use hydrogenation to keep fat from becoming rancid
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Trans fat is formed when unsaturated oils are put through a chemical process called hydrogenation.
The 17 Day Diet
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Instead, we started to look further afield at copper-based catalysts that had been rejected during the initial ester hydrogenation testwork.
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At that time, however, it was commonly believed that expressing the cDNA in living organisms would not produce fluorescent GFP, because the formation of its chromophore requires the reactions of condensation and dehydrogenation that are not expected to occur spontaneously.
Osamu Shimomura - Autobiography
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Dyson and Welton used water and ionic liquid soluble organometallic clusters and complexes to catalyse hydrogenation of the aromatics.
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The production sequence is hydrogenation deacidification → furfural refine → hydrotreating ( refined ) or clay refine.
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After hydrogenation, each of the four new amines on the ends of the molecule can react with acrylonitrile, resulting in eight new ends.
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At last February's Informex trade show in New Orleans, Avecia announced a research partnership with Synetix Chiral Technologies, a unit of ICI, to develop immobilized versions of its transfer hydrogenation and cyanohydrin catalyst systems.
Purchasing - Top Stories
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Hydrogen is also used by the food products industry to convert liquid oils to solid fats in a process known as hydrogenation.
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Reforming represents the total effect of numerous reactions such as cracking, polymerization, dehydrogenation, and isomerization taking place simultaneously (Figure 9).
Cracking
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The various CLA are produced in the rumen of ruminant animals mainly by the bacteria Butyrivibrio fibrisolvens through reactions of isomerization and biohydrogenation.
Conjugated linoleic acid (CLA) and breast milk | The Blog of Michael R. Eades, M.D.
