[1]王华梅,布娜,吴婷,等.硅烷聚合物修饰对SAPO-34分子筛膜的分离性能的影响[J].江西师范大学学报(自然科学版),2015,(05):469-473.
 WANG Huamei,BU Na,WU Ting,et al.The Influence of the Modification Using a Siloxane Polymer on Permeation Performance of SAPO-34 Membranes[J].,2015,(05):469-473.
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硅烷聚合物修饰对SAPO-34分子筛膜的分离性能的影响()
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《江西师范大学学报》(自然科学版)[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2015年05期
页码:
469-473
栏目:
出版日期:
2015-10-01

文章信息/Info

Title:
The Influence of the Modification Using a Siloxane Polymer on Permeation Performance of SAPO-34 Membranes
作者:
王华梅;布娜;吴婷;周荣飞;陈祥树
江西师范大学化学化工学院,江西省无机膜材料工程技术研究中心,江西南昌 330022
Author(s):
WANG Huamei;BU Na;WU Ting;ZHOU Rongfei;CHEN Xiangshu
关键词:
SAPO-34分子筛膜缺陷修饰CO2/CH4分离
Keywords:
SAPO-34 zeolite membranedefectivedefect-patchingCO2/CH4 separation
分类号:
TQ028.8
文献标志码:
A
摘要:
采用化学液相沉积( CLD)技术将含有咪唑官能团的硅烷聚合物沉积在SAPO-34分子筛膜表面,修饰膜的缺陷以提高其气体渗透选择性.通过傅里叶红外( FT-IR)、X-射线衍射( XRD)和场发射扫描电子显微镜( FE-SEM)等表征手段证明了硅烷聚合物以 Si—O—Si 共价键形式成功地接枝在膜表面.在298 K、0.1 MPa压力差的测试条件下,修饰后SAPO-34分子筛膜的CO2/CH4理想分离选择性由12提高到76,提高了5倍,CO2的渗透速率由7.22×10-7mol/(m2·s·Pa)降低至4.13×10-7 mol/(m2·s· Pa),降低了42.8;.考察了温度和压力差对SAPO-34分子筛膜的CO2和CH4渗透速率的影响.
Abstract:
A siloxane polymer coating with the imidazole group was grafted on the surface of SAPO-34 membranes to patch the defects by chemical liquid deposition method. Characterizations including field emission scanning electron microscopy( FE-SEM),X-ray diffraction( XRD)and Fourier transform infrared spectroscopy( FT-IR),showed that siloxane polymers were coated on the surfaces of crystals and membrane by Si—O—Si covalent bond. The patched SAPO-34 membrane(S-M-2)showed an increased CO2/CH4 ideal selectivity by a factor of 5(from 12 to 76),and a decreased CO2 permeance by 42.8;[from 7.22 ×10 -7mol/(m2·s·Pa)to 4.13 ×10 -7 mol/(m2· s·Pa)]at 298 K and a pressure drop of 0. 1 MPa. Theinfluences of temperature and pressure drop on single CO2 and CH4 permeances through SAPO-34 membranes werealsostudied.

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备注/Memo

备注/Memo:
科技部“863”计划(2012AA03A609);国家自然科学基金(20906042,20966003);江西省自然科学基金(2015ZACB20018)
更新日期/Last Update: 1900-01-01