| 摘要 |
The invention relates to a process for the oligomerization of light alkenes, in particular butenes, for the preparation of diesel oil and lubricating oil fractions having an improved cetane number and an improved viscosity index, in the presence of a chromium-containing ZSM-5 zeolite catalyst in temperature and pressure conditions which maintain oligomerization. The catalyst used in the process is an HZSM zeolite to which chromium in an amount of 0.7-5 wt.% of the weight of zeolite has been added by the impregnation technique or the dry ion exchange technique. |
