Highly permeable N-2/CH4 separation SAPO-34 membranes synthesized by diluted gels and increased crystallization temperature

Zhaowang Zong, Xuhui Feng, Harvey Huang, Zhuonan Song, Rongfei Zhou, Shaojun James Zhou, Moises A. Carreon, Miao Yu, Shiguang Li

Research output: Contribution to journalArticlepeer-review

Abstract

Synthesis conditions were optimized for synthesizing SAPO-34 membranes towards N-2/CH4 separation. Compared to previous SAPO-34 membrane preparations, synthesis gels were diluted 1.3-2.7 times and an increased crystallization temperature was used. As a result, a 3-4 fold increase in N-2 permeance was observed in this study. The membranes separated N-2 from CH4 with N-2 permeance as high as 1300 GPU and selectivity of 7.4 at 23 degrees C for a 50/50 N-2/CH4 mixture. Furthermore, membranes were reproducible and effectively separated gas mixtures having low N-2 content which are relevant compositions of natural gas. More specifically, membranes separated N-2 from CH4 with N-2 permeance as high as 1160 GPU and selectivity of 7.1 at 23 degrees C for an 18.5/81.5 N-2/CH4 mixture. The resultant SAPO-34 membranes have potential for economic N-2 rejection in natural gas processing. (C) 2015 Elsevier Inc. All rights reserved.

Original languageEnglish
Pages (from-to)36-42
Number of pages7
JournalMicroporous and Mesoporous Materials
Volume224
DOIs
Publication statusPublished - Apr 2016

Keywords

  • Zeolite
  • Gas separation
  • SAPO-34
  • Inorganic membrane
  • N-2/CH4 separation
  • CO2/CH4 SEPARATIONS
  • PERMEATION

Fingerprint

Dive into the research topics of 'Highly permeable N-2/CH4 separation SAPO-34 membranes synthesized by diluted gels and increased crystallization temperature'. Together they form a unique fingerprint.

Cite this