|本期目录/Table of Contents|

[1]吴再娟,洪周,张玉亭,等.MFI型分子筛膜晶内孔道的在线CVD调变[J].南京工业大学学报(自然科学版),2013,35(04):43-47.[doi:10.3969/j.issn.1671-7627.2013.04.009]
 WU Zaijuan,HONG Zhou,ZHANG Yuting,et al.Intracrystalline pore modification of MFI zeolite membrane by online CVD[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2013,35(04):43-47.[doi:10.3969/j.issn.1671-7627.2013.04.009]
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MFI型分子筛膜晶内孔道的在线CVD调变()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
35
期数:
2013年04期
页码:
43-47
栏目:
出版日期:
2013-07-01

文章信息/Info

Title:
Intracrystalline pore modification of MFI zeolite membrane by online CVD
文章编号:
1671-7627(2013)04-0043-05
作者:
吴再娟洪周张玉亭顾学红
南京工业大学 材料化学工程国家重点实验室,江苏 南京 210009
Author(s):
WU ZaijuanHONG ZhouZHANG YutingGU Xuehong
State Key Laboratory of Materials-Oriented Chemical Engineering,Nanjing University of Technology,Nanjing 210009,China
关键词:
分子筛膜 修饰 H2/CO2分离
Keywords:
zeolite membrane modification H2/CO2 separation
分类号:
TQ174
DOI:
10.3969/j.issn.1671-7627.2013.04.009
文献标志码:
A
摘要:
采用在线化学气相沉积(CVD)法对全硅MFI型分子筛膜进行晶内孔道修饰,考察晶间缺陷对膜晶内孔道修饰效果的影响。采用硅烷水解法对缺陷较多的膜进行缺陷孔的修补,结合扫描电子显微(SEM),观察膜微结构的变化。结果表明:分子筛膜表面缺陷显著影响晶内孔道调变效果。500 ℃时,缺陷较少的膜经晶内修饰后H2/CO2分离因子由修饰前的2.7提高到42.3,H2渗透性由2.25×10-7 mol/(m2·s·Pa)降至1.52×10-7 mol/(m2·s·Pa)。经缺陷修补后的分子筛膜,其晶内修饰后的H2/CO2分离因子比未修补的膜有一定幅度的提高。
Abstract:
Intracrystalline pores of all-siliceous MFI-type zeolite membrane were modified by online chemical vapor deposition(CVD).The effect of intercrystalline defects on intracrystalline pore modification of the membrane was investigated.Hydrolysis of silane was also used to heal nonzeolitic pore of the membrane.The microstructure change of membrane was characterized by scanning electron microscope(SEM).The results showed that the defects significantly influenced the modification.For the membrane with few defects,H2/CO2 separation factor increased from 2.7 to 42.3 via modification at 500 ℃,while H2 permeance decreased from 2.25×10-7 mol/(m2·s·Pa)to 1.52×10-7 mol/(m2·s·Pa).After modification,the H2/CO2 separation factor of membrane with intercrystalline defects treatment was better than that without intercrystalline defects treatment.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2012-05-20
基金项目:国家重点基础研究发展计划(973计划)(2009CB623403); NSFC-广东联合基金(U0834004)
作者简介:吴再娟(1987—),女,山东枣庄人,硕士,主要研究方向为膜材料; 顾学红(联系人),教授,E-mail:xhgu@njut.edu.cn..
更新日期/Last Update: 2013-07-07