Olefin Recovery by *BEA‐Type Zeolite Membrane: Affinity‐Based Separation with Olefin−Ag +  Interaction | Zendy

Sakai Motomu | Zendy; Tsuzuki Yuto | Zendy; Fujimaki Naoyuki | Zendy; Matsukata Masahiko | Zendy

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

Author(s) -

Sakai Motomu,

Tsuzuki Yuto,

Fujimaki Naoyuki,

Matsukata Masahiko

Publication year - 2021

Publication title -

chemistry – an asian journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.18

H-Index - 106

eISSN - 1861-471X

pISSN - 1861-4728

DOI - 10.1002/asia.202100096

Subject(s) - olefin fiber , permeance , membrane , ethylene , adsorption , permeation , zeolite , propane , selectivity , chemistry , selective adsorption , chemical engineering , polymer chemistry , chromatography , organic chemistry , catalysis , biochemistry , engineering

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 1.6×10 −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.

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