有机硅烷交联PDMS/陶瓷复合膜的制备及渗透汽化汽油脱硫性能

doi:10.16085/j.issn.1000-6613.2016.10.044

化工进展 ›› 2016, Vol. 35 ›› Issue (10): 3331-3336.DOI: 10.16085/j.issn.1000-6613.2016.10.044

有机硅烷交联PDMS/陶瓷复合膜的制备及渗透汽化汽油脱硫性能

徐荣, 邹琳, 张琪, 钟璟

常州大学石油化工学院, 江苏省绿色催化材料与技术重点实验室, 江苏常州 213164

收稿日期:2016-03-11 修回日期:2016-04-21 出版日期:2016-10-05 发布日期:2016-10-05
通讯作者: 钟璟,博士,教授,主要从事膜分离和分子模拟等研究。E-mail:zjwyz@cczu.edu.cn
作者简介:徐荣(1983-),男,博士,讲师。E-mail:xurong@cczu.edu.cn。
基金资助:
国家自然科学基金（21406018，21276029），江苏省高校自然科学研究面上项目（15KJB530001），常州大学、江苏省先进催化与绿色制造协同创新中心及常州大学科研启动基金（ZMF14020054）项目。

Fabrication of aminosilane crosslinked PDMS/ceramic composite membranes for pervaporative desulfurization of gasoline

XU Rong, ZOU Lin, ZHANG Qi, ZHONG Jing

Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, Jiangsu, China

Received:2016-03-11 Revised:2016-04-21 Online:2016-10-05 Published:2016-10-05

摘要/Abstract

摘要： 采用有机硅烷γ-氨丙基三甲氧基硅氧烷（APTMS），对聚二甲基硅氧烷（PDMS）进行交联改性，以ZrO₂/Al₂O₃陶瓷复合膜为支撑体，制备了一系列有机硅烷交联的PDMS/陶瓷复合膜。通过扫描电镜（SEM）、傅里叶红外光谱（FTIR）、热重分析（TGA）对改性效果和膜结构进行了表征。将所制备的PDMS/陶瓷复合膜应用于渗透汽化脱除模拟汽油中的有机硫化物（噻吩），考察了交联剂APTMS含量、操作温度、料液含硫量等因素对复合膜渗透汽化脱硫性能的影响。实验结果表明，有机硅烷交联的PDMS膜相比于传统正硅酸乙酯（TEOS）交联的PDMS膜，通量和硫富集因子均有所提高。随着进料温度和原料液中硫含量的升高，膜的渗透通量均增大，而硫富集因子均减小。当APTMS质量分数为15%、进料温度为25℃、噻吩质量浓度为100mg/kg时，渗透通量为0.46 kg/（m²·h），硫富集因子达到3.5。

关键词: 聚二甲基硅氧烷, 脱硫, 渗透汽化, 有机硅烷

Abstract: A series of aminosilane crosslinked PDMS/ceramic composite membranes were prepared using γ-aminopropyltrimethoxysilane(APTMS)as the crosslinking agent and ZrO₂/Al₂O₃ membranes as the support. The APTMS crosslinked PDMS/ceramic composite membranes were characterized by scanning electron microscopy(SEM),Fourier transform infrared spectroscopy(FTIR)and thermal gravimetric analysis(TGA). The prepared membranes were applied to pervaporative removal of organosulfur compounds(thiophene)from model gasoline. The effects of operational variables such as APTMS content,operating temperature and feed sulfur content on desulfurization performances of the membrane were investigated. Compared with conventional PDMS membrane crosslinked by TEOS,the APTMS crosslinked PDMS membrane exhibited a higher permeation flux and a higher sulfur enrichment factor in pervaporative desulfurization. In addition,the permeation flux increased whereas the sulfur enrichment factor decreased as the feed temperature or the feed sulfur content increased. The modified PDMS/ceramic composite membrane with an optimum APTMS content of 15% exhibited a permeation flux of 0.46kg/(m²·h) and a sulfur enrichment factor of 3.5 at 25℃ and a feed thiophene concentration of 100mg/kg.

Key words: PDMS membrane, desulfurization, pervaporation, organosilane

中图分类号:

TQ028.8

徐荣, 邹琳, 张琪, 钟璟. 有机硅烷交联PDMS/陶瓷复合膜的制备及渗透汽化汽油脱硫性能[J]. 化工进展, 2016, 35(10): 3331-3336.

XU Rong, ZOU Lin, ZHANG Qi, ZHONG Jing. Fabrication of aminosilane crosslinked PDMS/ceramic composite membranes for pervaporative desulfurization of gasoline[J]. Chemical Industry and Engineering Progree, 2016, 35(10): 3331-3336.

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有机硅烷交联PDMS/陶瓷复合膜的制备及渗透汽化汽油脱硫性能

Fabrication of aminosilane crosslinked PDMS/ceramic composite membranes for pervaporative desulfurization of gasoline

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