Oligomerization of 1-Decene: Catalyzation by Immobilized AlCl_3/γ-Al_2O_3 Catalyst in Fixed-bed Reactor

1-Decene was oligomerized over the supported AlCl3/γ-Al2O3 catalyst in a fixed-bed reactor. The effects of temperature and LHSV on oligomerization of 1-decene were investigated and the synthetic PAO was characterized with GC technique. Furthermore, the life of immobilized catalyst was tested and the mechanism of catalyst deactivation was discussed. The results showed that with an increasing temperature, the PAO yield increased and the kinematic viscosity of oil decreased. The GC results indicated that the synthesized PAO was a mixture consisting of dimers, trimers, tetramers and pentamers. The results of chloride content measurements and BET tests showed that catalyst deactivation could be mainly attributed to the loss of active components.

A Novel Way to Prepareγ-A1_2O_3 Supported SO_4^(2-)/ZrO_2 Solid Superacid Catalysts for n-Butane Isomerization

Highly active solid superacid catalysts for n-butane isomerization, SZ/A1_2O_3-P, were prepared by supporting SO-(4-2)/ZrO2, (SZ) on y-A1_2O_3 carrier using a precipitation method. The activities of some catalysts were enhanced significantly j The activity of the most active sample. 60%SZ/Al_2O3-P, was even about 2 times more active than that of the SZ catalyst.

1,2-二苯乙烷的合成工艺研究

苯与1,2-二氯乙烷合成1,2-二苯乙烷反应的热力学计算表明,该反应在室温下即可进行,为自发的强放热反应。研究了以催化剂AlCl3-Al合成1,2-二苯乙烷的工艺条件。结果表明,较优的工艺条件为:苯与1,2-二氯乙烷的物质的量比在10～12,催化剂加入量为1g/100cm3苯,反应温度为65～70℃,1,2-二氯乙烷以混合滴加的方式进行加料为宜。在此条件下,1,2-二苯乙烷的收率为18.2%。