摘要

Because methyl tert-butyl ether (MTBE) is soluble in water and has been occasionally found its way into ground water from leaking storage tanks, MTBE is environmentally limited as gasoline additive and its production and application prospects are negatively affected. Producing isooctane by MTBE decomposition, dimerization of isobutene(IB) and hydrogenation of diisobutene became the main way for the exiting MTBE units to produce other products abroad. The catalysts for IB dimerization, reactive site, reactive mechanism and dynamics research date are reviewed in this paper. The mechanism of selectivity enhancing by adding tert-butyl alcohol during IB dimerization is explained and the reference for the study of dimerization is provided afterwards.