Isolation of a Self-Activating Ethylene Trimerization Catalyst

摘要

Among the many chemical elements that produce interesting catalysts for ethylene polymerization, without doubt, chromium occupies a special position. The heterogeneous Phillips polymerization system based on chromium-impregnated silica is still among the most widely used, inexpensive, and best-performing catalytic systems for the worldwide commercial production of high-density polyethylene. Related and no less important is the ability of the same element to provide catalysts for selective ethylene trimerization.