现代化工

现代化工 ›› 2023, Vol. 43 ›› Issue (10) : 201-207. DOI: 10.16606/j.cnki.issn0253-4320.2023.10.037

科研与开发

硅烷偶联HY分子筛固载离子液体催化剂的制备与性能研究

史亚飞, 王海玥, 王昊楠, 周俏, 郭立颖

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Preparation and performance of silane coupled HY molecular sieve immobilized ionic liquid catalyst

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Received		Published
2023-05-26		2023-10-20
Issue Date	Revised Date
2023-10-16	2023-05-26

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摘要

以3-氯丙基三乙氧基硅烷(CPTES)为偶联剂、HY分子筛为载体、[HeMIM]Cl/(ZnBr₂)₂为催化活性中心,制备出固载离子液体催化剂HY-CPTES-[HeMIM]Cl/(ZnBr₂)₂;利用FT-IR、XRD、TGA和SEM对其进行表征;将其用于催化CO₂与PO的环加成反应。结果表明,在130℃、2.5 MPa、催化剂质量占PO质量的2.0%的条件下,PO的转化率为96.37%,碳酸丙烯酯(PC)选择性和产率分别为97.51%和93.97%;催化剂循环使用5次后仍保持良好的催化性能。

Abstract

HY-CPTES-Cl/(ZnBr₂)₂,an immobilized ionic liquid catalyst,is prepared by using 3-chloropropyltriethoxysilane (CPTES) as a coupling agent,HY molecular sieve as a carrier,and Cl/(ZnBr₂)₂ as a catalytically active center.The catalyst is characterized by using FT-IR,XRD,TGA and SEM,and applied in the catalytic cycloaddition reaction of CO₂ with PO.The results show that the conversion of PO reaches 96.37%,the selectivity and yield of propylene carbonate are 97.51% and 93.97%,respectively when the temperature is at 130℃,the pressure is 2.5 MPa,and the mass of catalyst is 2.0% that of PO.The catalyst maintains a good catalytic performance after it has been recycled for five times.