| 摘要 |
1379202 Two-stage hydrocracking SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 29 Nov 1971 [30 Nov 1970] 56802/70 Heading C5E Light hydrocarbon fractions are obtained from heavy hydrocarbon fractions by hydrocracking in a two-stage process in which the first stage is conducted using a fluorine containing catalyst with at least 7 p.b.w. of nickel and at least 20 p.b.w. of molybdenum per 100 p.b.w. of alumina and with an atomic ratio of Ni to Mo of 0À1 : 1 to 0À75 : 1. |
