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Date of Publication:2021-01-01

Journal:Huagong Jinzhan/Chemical Industry and Engineering Progress

Volume:40

Issue:5

Page Number:2546-2559

ISSN No.:1000-6613

Abstract:Propylene dimerization is an important reaction for producing terminal alkenes, including 4-methyl-1-pentence and 1-hexene, which are widely used as special polymer monomers, gasoline additives, and organic intermediates in chemical industry. The conversion of propylene and the product selectivity are largely determined by the catalysts used in the propylene dimerization. Heterogeneous catalysts have attracted wide attentions due to their advantages of easy recovery and relatively small environmental pollution, compared with homogeneous catalysts. Based on different reaction mechanisms, the solid base catalysts and solid acid catalysts used in the propylene dimerization have been systematically reviewed. The development and industrial applications of solid base catalysts in propylene dimerization have been introduced and their reaction mechanisms have been summarized by taking alkali metal potassium as an example. The solid acid catalysts of phosphoric acid catalyst, molecular sieve catalyst and transition metal catalyst are introduced in detail. In view of the harsh preparation conditions of solid base catalyst, we proposed a new idea to improve the catalytic unit. To increase the insufficient selectivity of solid acid catalysts, we pointed out that the reaction mechanism should be further studied and the catalyst combining acid carrier and transition metal should be designed reasonably to achieve high selectivity of the dimer products. © 2021, Chemical Industry Press Co., Ltd. All right reserved.

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