膜科学与技术

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Effect of photoreduction on the permeation property and structure of solid polymer electrolyte membranes for propylene/propane separation

Authors： WAGN Yanbei, REN Jizhong*, DENG Maicun

Units： National Engineering Research Center of Membrane Technology, Dalian Institute of Chemical Physics, Dalian 116023, China

KeyWords： olefin/paraffin separation; facilitated transport; solid polymer electrolyte; photoreduction.

ClassificationCode：

year,volume(issue):pagination： 2012,32(4):32-37

Abstract：

In this paper, solid polymer electrolyte PEI/Pebax2533/AgNO3 and PEI/Pebax2533/AgBF4 composite membranes are prepared with complexing method. The influence of photoreduction on the permeation property and structure of composite membranes is investigated. For PEI/Pebax2533/AgBF4 composite membrane, photoreduction induces the decrease of Ag+ content, resulting in the decrease of propylene permeance and propylene/propane selectivity. But for PEI/Pebax2533/AgNO3 composite membrane, photoreduction almost has no influence on the propylene/propane selectivity. With the increase of silver salt concentration in the aqueous complexing solution, the reduced Ag0 particles inside the membrane also increase, which proves that the silver salt concentration in the aqueous complexing solution dominates the Ag+ content of the solid polymer electrolyte layer and influences the membrane performance.

Funds：

国家自然科学基金项目（20776137）支持

AuthorIntro：

王雁北（1983-）, 女, 天津人, 博士, 从事膜分离过程研究.?通讯联系人, renjizhong@dicp.ac.cn

Reference：

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