Double cross-linking PVA-SiO2 hybrid membranes for alkali recovery
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- 作者：Bin Tonga ; b ; Congliang Chenga ; b ; Muhammad Imran Khana ; Yonghui Wuc ; wuyonghui1000@126.com" class="auth_mail" title="E-mail the corresponding author ; Tongwen Xua ; twxu@ustc.edu.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：Hybrid membrane ; Polyvinyl alcohol ; Alkoxysilanes ; Diffusion dialysis ; Alkali recovery
- 刊名：Separation and Purification Technology
- 出版年：2017
- 出版时间：1 March 2017
- 年：2017
- 卷：174
- 期：Complete
- 页码：203-211
- 全文大小：1607 K
文摘
- •
Double alkoxysilanes cross-link with PVA to prepare optimized membranes.
- •
The
NH2 group can enhance membrane homogeneity, thermal stability and flexibility.- •
Single
Si(OCH3) group produces large silica particles and reduces membrane stability and selectivity.- •
Combination of
Si(OCH3) and Si(OC2H5) groups can obtain high stability and balance permeability and selectivity.