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Hydrogenation

Posted at 09/11/04
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Hydrogenation

Product Name: Hydrogenation

Recommendatory amount of usage: 5—5%

Description:

Hydrogenation is the chemical reaction that results from the addition of hydrogen (H2). The process is usually employed to reduce or saturate organic compounds. The process typically constitutes the addition of pairs of hydrogen atoms to a molecule. Catalysts are required for the reaction to be usable; non-catalytic hydrogenation takes place only at very high temperatures. Hydrogen adds to double and triple bonds in hydrocarbons.

Because of the importance of hydrogen, many related reactions have been developed for its use. Most hydrogenations use gaseous hydrogen (H2), but some involve the alternative sources of hydrogen, not H2: these processes are called transfer hydrogenations. The reverse reaction, removal of hydrogen from a molecule, is called dehydrogenation. A reaction where bonds are broken while hydrogen is added is called hydrogenolysis, a reaction that may occur to carbon-carbon and carbon-heteroatom (O, N, X) bonds. Hydrogenation differs from protonation or hydride addition: in hydrogenation, the products have the same charge as the reactants.

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Scan Comments

NO.1 From: Kapp  Mr.Jeff / Sales Manager  E-mail: **********  
It's the first time for us to cooperate with GREEN STONE company. We are satisfied with its professional and good service,which convince us that we will hava more happy cooperation in the future.

NO.2 From: Cluster Limited   Ms.Emma / Pre-president  E-mail: **********  
To tell the truth,I was a little worried at the first,worried for the quality of products I ordered and also,the most important for me,the delivery time of goods.At the moment I received the goods,I felt very happy that GREEN STONE company is really the great business partner with trust and profession!

NO.3 From: Acon Limited  Mr.Kevin / Sales Manager  E-mail: **********  
GREEN STONE company brings me the first big surprise to me in the new year.We are satisfied with the good product quality,fine packing as well as the swift service!

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