Analytical hydrogenation of mineral oils

RING ANALYSIS AND CARBON-TYPE ANALYSIS OF MINERAL OIL FRACTIONS a. Analytical hydrogenation of mineral oils 

When highly aromatic fractions are hydrogenated prolonged heating of the completely hydrogenated material in the presence of nickel catalyst and high pressure 

In all probability isomerizations of the same type take place during the prolonged hydrogenation. As follows from Fig. i these reactions bring about a small but obvious 

In normal cases the hydrogenation of mineral oil fractions can be used as an analytical tool for a quantitative transformation of aromatic rings into the corresponding naphthenes. 

When the problem of establishing the structure of hydrogenated products has been solved, more complicated mixtures, e.g. aromatic-containing fractions, can be considered. The existing methods of determining the composition of mineral oil fractions have been developed according to this scheme. The methods presented below are treated in principle in chronological order. 

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