It is found that the major nitrogen sources in coker gas oils are associated with relatively small pentaneinsoluble species and an even smaller, highly polar, hexane insoluble species.
研究发现，焦化蜡油中主要的富氮组分是较小分子的戊烷不溶物，或者是更小分子、极性较强的己烷不溶物。
2
The kinetics of thermal conversion of nickel compounds from pentane-soluble into pentane-insoluble fractions was also studied.