0 the process of producing hydrogenated fats
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.
