Premium
Gelless Secondary Growth of Zeolitic Aluminophosphate Membranes on Porous Supports with High Performance in CO 2 /CH 4 Separation
Author(s) -
Le Quang Thanh,
Nguyen Duy HoaiPhuong,
Nguyen Nha Minh,
Nguyen Duy PhucHoang,
Nguyen Ty Minh,
Nguyen Tung Ngoc,
Pham Tung CaoThanh
Publication year - 2020
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201903571
Subject(s) - membrane , molecular sieve , microporous material , gas separation , selectivity , chemical engineering , porosity , materials science , environmentally friendly , porous medium , chemistry , organic chemistry , catalysis , ecology , biochemistry , engineering , biology
Abstract Zeolitic aluminophosphate, a three‐dimensional microporous material, with an average pore size of 0.38 nm is good candidate for molecular sieve application in CO 2 gas separation. The separation of CO 2 /CH 4 gas mixtures for precombustion processes is desirable from the standpoint of both environmental concerns and energy efficiency. This study concerns an environmentally friendly method to synthesize zeolitic aluminophosphate thin films on various configurations and low‐cost kaolin porous substrates with high performance in the separation of CO 2 /CH 4 mixtures. The membranes are prepared by a gelless seed growth method that uses lower amounts of chemicals, forms no liquid gel, chemical waste, or byproducts and generates no washing water. The obtained membranes show very high selectivity for CO 2 with a CO 2 /CH 4 separation factor above 1000 in the separation of CO 2 /CH 4 gas mixtures.