个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : 现任大连理工大学化工学院教授、博士生导师。同时担任“膜科学与技术”期刊编委,膜学会理事(筹),膜工业协会工程与应用专业委员会及特种分离膜专业委员会委员、中国兵工学会活性炭测试分析与应用研究分会委员等。
性别:男
毕业院校:大连工学院
学位:硕士
所在单位:化工学院
学科:化学工艺. 膜科学与技术. 功能材料化学与化工
办公地点:化工综合楼A201
联系方式:微信/电话 13500711370
电子邮箱:wangth@dlut.edu.cn
Preparation and enhanced gas separation performance of Carbon/Carbon nanotubes (C/CNTs) hybrid membranes
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论文类型:期刊论文
发表时间:2017-11-29
发表刊物:SEPARATION AND PURIFICATION TECHNOLOGY
收录刊物:SCIE、EI
卷号:188
页面范围:73-80
ISSN号:1383-5866
关键字:PMDA-ODA; Carbon membranes; Gas separation; Carbon nanotubes
摘要:Carbon/carbon nanotubes (C/CNTs) hybrid membranes are successfully fabricated by pyrolyzing poly (amic acid) (PAA) precursors incorporated with CNTs. The morphology and gas separation performance of the hybrid carbon membranes are analyzed by scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM) and single gas permeation test (H-2, CO2, O-2, N-2, and CH4). The effects of CNTs properties (CNTs type, concentration, length and diameter) of on gas separation performance of the hybrid carbon membranes are systemically investigated. The results show the combination of carbon molecular sieve membranes (CMSMs) with CNTs exerts a significantly favourable effect on the enhancement of gas separation performance. Carbon membrane incorporated by multi-walled carbon nanotubes (MWCNTs) shows higher permeabilities but lower selectivities than that embedded by single walled carbon nanotubes (SWCNTs). After acid treatment, the improvement on gas permeabilities by MWCNTs tunnels is not significant when facing the compaction of membrane structure. With the increase of MWCNTs concentrations, the hybrid carbon membrane exhibits significant enhancement in gas permeabilities. In addition, MWCNTs with long length and large diameter usually produce high gas permeabilities. (C) 2017 Elsevier B.V. All rights reserved.