Voorbeelden van hydrogenation

• This is then followed by isomerization and hydrogenation.

• Conversely, the degree of hydrogenation can be very low and in this case the aromatic fraction will grow at the expense of the naphtenic fraction.

• Only partial hydrogenation of carbon black may reproduce the interstellar extinction peak.

• Furthermore, they present a certain versatility : their degree of hydrogenation and hence their aromatic and naphtenic content can change according to the environment where these molecules are present.

• Coal is the basic ingredient in the production of electricity, in hydrogenation, in the manufacture of by-pro- ducts and of chemicals and of gas.

• Then there is the study of the enrichment of lean gas by methane, propane, butane and refinery gases, and by the hydrogenation of oil.

• Hydrogenation seems to be in an entirely different category.

• In all cases tar oils are produced which form a valuable raw material for, or are best processed by, hydrogenation.