Olefin Recovery by *BEA-Type Zeolite Membrane: Affinity-Based Separation with Olefin-Ag+ Interaction

被引：10

作者：

Sakai, Motomu ^{[1
]}

Tsuzuki, Yuto ^{[2
]}

Fujimaki, Naoyuki ^{[2
]}

Matsukata, Masahiko ^{[2
,3
]}

机构：

[1] Waseda Univ, Res Org Nano & Life Innovat, Shinjuku Ku, 513 Waseda Tsurumaki Cho, Tokyo 1620041, Japan

[2] Waseda Univ, Dept Appl Chem, Shinjuku Ku, 513 Waseda Tsurumaki Cho, Tokyo 1620041, Japan

[3] Waseda Univ, Adv Res Inst Sci & Engn, Shinjuku Ku, 513 Waseda Tsurumaki Cho, Tokyo 1620041, Japan

来源：

CHEMISTRY-AN ASIAN JOURNAL | 2021年 / 16卷 / 09期

基金：

日本科学技术振兴机构;

关键词：

zeolite; membrane separation; *BEA; ethylene; propylene;

D O I：

10.1002/asia.202100096

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ag+ was introduced into *BEA-type zeolite membrane by an ion-exchange method to enhance olefin selectivity. Ag-*BEA membrane exhibited superior olefin separation performance for both ethylene/ethane and propylene/propane mixtures. Particularly, the separation factor for ethylene at 373 K reached 57 with the ethylene permeance of 1.6x10(-7) mol m(-2) s(-1) Pa-1. Adsorption properties of olefin and paraffin were evaluated to discuss contribution of Ag+ to separation performance enhancement. A strong interaction between olefin and Ag+ in the membrane caused preferential adsorption of olefin against paraffin, leading to selective permeation of olefin. Ag-*BEA membrane also exhibited high olefin selectivities from olefin/N-2 mixtures. The affinity-based separation through Ag-*BEA membrane showed a high potential for olefin recovery and purification from various gas mixtures.

引用

页码：1101 / 1105

页数：5

共 33 条

[1] Economic Estimation of Various Membranes and Distillation for Propylene and Propane Separation [J].