申请人:Shell Oil Company
公开号:US04980331A1
公开(公告)日:1990-12-25
A hydrogenation catalyst prepared by combining one or more Group VIII metal compounds with one or more alkylalumoxanes and one or more alkyls or hydrides of a metal selected from the group consisting of the Group Ia, IIa, and IIa metals and a hydrogenation process wherein said catalyst is used to hydrogenate compounds containing ethylenic and/or aromatic unsaturation. Preferably, the one or more Group VIII metal compounds will be contacted sequentially with the one or more alkylalumoxanes and the one or more alkyls or hydrides, first with the one or more alkylalumoxanes and then with the one or more alkyls and/or hydrides. The one or more Group VIII metal compounds is selected from the group of compounds consisting of carboxylates, chelates, alkoxides, salts of acids containing sulfur, salts of partial esters of acids containing sulfur and salts of aliphatic and aromatic sulfonic acids. Nickel and cobalt compounds are preferred for use in the hydrogenation catalysts. Certain of the hydrogenation catalyst, particularly those prepared with a methylalumoxanes, initially exhibit less hydrogenation activity than catalysts known heretofore in the prior art and prepared with a metal alkyl and/or hydride of a metal selected from Groups Ia, IIa and IIIa of the Periodic Table of Elements. These catalysts, then, permit greater control over the extent of hydrogenation, particularly when partial hydrogenation is a desired end result. Ultimately, however, these catalyst permits substantially complete hydrogenation of both ethylenic and aromatic unsaturation.
一种氢化催化剂,由一种或多种VIII族金属化合物与一种或多种烷基铝氧烷和一种或多种从Ia、IIa和IIa金属组中选择的金属的烷基或氢化物相结合制备而成,以及一种氢化过程,其中所述催化剂用于氢化含有乙烯基和/或芳香基不饱和度的化合物。首选,一种或多种VIII族金属化合物将按顺序与一种或多种烷基铝氧烷和一种或多种烷基或氢化物接触,先是一种或多种烷基铝氧烷,然后是一种或多种烷基和/或氢化物。所述一种或多种VIII族金属化合物选自由羧酸盐、螯合物、醇盐、含硫酸的酸盐、含硫酸的部分酯盐和脂肪族和芳香族磺酸盐组成的化合物组。镍和钴化合物是用于氢化催化剂的首选材料。某些氢化催化剂,特别是使用甲基铝氧烷制备的催化剂,最初表现出比先前在先前的技术中使用Ia、IIa和IIIa族元素周期表中选择的金属烷基和/或氢化物制备的催化剂更少的氢化活性。然后,这些催化剂允许更好地控制氢化程度,特别是当部分氢化是所需的最终结果时。然而,最终,这些催化剂允许乙烯基和芳香基不饱和度的完全氢化。