Related Experiment Video
Updated: Nov 14, 2025

Organic Structure-directing Agent-free Synthesis for *BEA-type Zeolite Membrane
Published on: February 22, 2020
Olefin Recovery by *BEA-Type Zeolite Membrane: Affinity-Based Separation with Olefin-Ag+ Interaction
Motomu Sakai1, Yuto Tsuzuki2, Naoyuki Fujimaki2
1Research Organization for Nano & Life Innovation, Waseda University, 513 Waseda-Tsurumaki-cho, Shinjuku-ku, Tokyo, 162-0041, Japan.
Abstract:
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/N2 mixtures. The affinity-based separation through Ag-*BEA membrane showed a high potential for olefin recovery and purification from various gas mixtures.
More Related Videos
Related Concept Videos
Affinity Chromatography
Olefin Metathesis Polymerization: Overview
Ruthenium-based Grubbs catalyst is the most commonly used catalyst for olefin metathesis polymerization. Grubbs catalyst consists of a...
Extraction: Advanced Methods
Ion Exchange
Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...

