AMORPHOUS TOWARD X-RAY EMISSION, CATALYTICALLY ACTIVE SILICON- ALUMINUM-NICKEL OXIDE GEL, METHOD OF PREPARATION THEREOF, METHOD OF ISOBUTYLENE DIMERIZATION, AND METHOD OF PREPARING PROPYLENE DIMERS AND TRIMMERS Russian patent published in 1997 - IPC

FIELD: catalysts for organic reactions. SUBSTANCE: characteristics: silica to alumina molar ratio from 30:1 to 500:1, nickel oxide to silica molar ratio from 0.001: 1 to 0.01:1, surface area 500 to 1000 sq.m/g, and porosity 0.3-0.6 ml/g with pore diameter 1 nm and absence of pores with diameter greater than 3 nm. Catalyst selectively dimerizes isobutylene and oligomerizes propylene into dimers and TRIMMERS. Method of preparing silicon-nickel-aluminum oxide gel is described as well as oligomerization processes. EFFECT: increased selectivity of reactions. 14 cl, 1 tbl