Bis(tert-butylperoxy) diisopropyl benzene was synthesized from diisopropyl benzene by peroxidation,reduction,synthesis of BIPB.

Thermodynamic analysis of diisopropylbenzene transalkylation reaction;

Synthesis of diisopropylbenzene and triisopropylbenzene by heterogeneous catalytic method;

Hβ-1,Hβ-2 and Hβ-3 molecular sieves modified with NH_4NO_3,diammonium citrate and triammonium citrate respectively were characterized by means of XRD,NH_3-TPD and IR,and used as catalysts for diisopropylbenzene(DIPB)isomerization.

With diisobutene form polyunit as feedstock, hydrogenation reaction is made in the fixed bed hydrogenation unit, isooctane is produced by diisobutene hydrogenation under proper reaction condition and in the presence of hydrogenation catalyst, the purity of isooctane so produced is 93%, and can reach 99.

MTBE and diisobutene are important intermediates of downstream C4 petrochemical products.

In order to solve the problems such as multiple components in products, long time of rectification, high energy consumption, low yield and purity of product occurring during the production of p - octyl phenol, the effects of reaction conditions including reaction temperature, reaction time, the molar ratio of phenol to diisobutene on the conversion and yield of the product were examined.

The process can convert over 95% isobutylene in C 4 olefin into diisobutylene(DIB) or isooctene in the present of acid cation exchange resin catalyst,and partial 1-butylene also take part in the reaction.

The production technology and development of diisobutylene were reviewed.