Oligomerization and catalysts therefor

In a process for the oligomerization of olefins comprising contacting a feed containing olefin monomers with at least one oligomerization catalyst having the TON and/or MFS structure under oligomerization conditions, including a reaction temperature, to produce a product selected from the group consisting of dimers, trimers, and mixtures thereof, of said olefin monomers, the improvement comprising said feed being further characterized by having from 1 to 100 ppm by volume sulfur-containing compounds and increasing the reaction temperature with time the catalyst is on stream.

In a process for the oligomerization of olefins comprising contacting a feed containing olefin monomers with at least one oligomerization catalyst having the TON and/or MFS structure under oligomerization conditions, including a reaction temperature, to produce a product selected from the group consisting of dimers, trimers, and mixtures thereof, of said olefin monomers, the improvement comprising mitigating the adverse effects of the presence of sulfur compounds in said feed on at least one of the activity and life of said oligomerization catalyst by carrying out said oligomerization of olefins at a reaction temperature higher than that which would otherwise have been chosen for the reaction concerned in the absence of said sulfur compounds.