均苯四甲酸四丁酯合成中HZSM-5分子筛催化性能研究

doi:10.3969/j.issn.1001-1803.2021.03.003

Abstract

Abstract:

Pyromellitic dianhydride reacted with n-butanol to produce a green surfactant of tetrabutyl pyromellitate using a HZSM-5 molecular sieve catalyst. The effects of the one-step crystallization and two-step crystallization on the structure and performance of the molecular sieve were investigated. The reaction temperature, reaction time, catalyst dosage, alcohol-anhydride ratio and other process conditions were optimized. The results show that the HZSM-5 prepared by two-step crystallization has high crystallinity, small grain size and regular grain size. Under the better conditions: 220 ^oC reaction temperature, 6 h reaction time, 5% of the catalyst, 7∶1 of the ratio of alcohol to anhydride, the conversion of pyromellitic dianhydride was 93%.

Key words: HZSM-5 molecular sieve, tetrabutyl pyromellitate, plasticizer, pyromellitic dianhydride

CLC Number:

TQ423

QIN Na-di,DING Jian-fei,ZHANG Yi-dong,XU Fei,LI Mo,XU Wei,SHAO Rong. Research on the catalytic performance of HZSM-5 in the synthesis of tetrabutyl pyromellitate[J].China Surfactant Detergent & Cosmetics, 2021, 51(3): 186-189.

Figures/Tables 7

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References 16

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催化剂	均苯四甲酸二酐转化率/%
无	46.1
1-HZSM-5	64.7
2-HZSM-5	75.8

Research on the catalytic performance of HZSM-5 in the synthesis of tetrabutyl pyromellitate

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