Citation: Tian Xi CAI, Min HE, Xian Zhe SHI, Xin Ping WANG. Influence of Geometric Structure of Immobilized Aluminium Chloride Catalyst on Catalytic Property in Isobutene Polymerization[J]. Chinese Chemical Letters, ;2001, 12(7): 647-650. shu

Influence of Geometric Structure of Immobilized Aluminium Chloride Catalyst on Catalytic Property in Isobutene Polymerization

State Key Laboratory for Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116012

Received Date: 19 December 2000

The catalytic property of AlCl₃ catalyst immobilized on γ-Al₂O₃ for isobutene polymerization has been studied. It was found that the activity, selectivity and stability of the catalyst are dependent greatly on geometric characteristic of the pore structure and size of catalyst.Although the activity and selectivity of the catalysts with micro-and meso-pore structure are all high in initial stage, but their stability is low, while those with bimodal meso-and macro-pore structure are excellent. Increasing granularity of the catalyst (particle become fine) brings about an increase in isobutene conversion, but a decrease in selectivity, resulting in lower average molecular weight and its broader distribution.
- AlCl₃ immobilization,
- γ-Al₂O₃,
- bimodal meso-and macro-pore structure,
- isobutene polymerization,
- stability
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