High H2 permeable SAPO-34 hollow fiber membrane for high temperature propane dehydrogenation application

Zhigang Wang, Jeff Xu, Subhasis Pati, Tianjia Chen, Yuzhen Deng, Nikita Dewangan, Lie Meng, Jerry Y.S. Lin, Sibudjing Kawi

Research output: Contribution to journalArticle

Abstract

SAPO-34 hollow fiber zeolite membranes are successfully synthesized on α-Al2O3 hollow fiber ceramic substrates by secondary growth method, and used to separate H2 from a binary mixture (H2, C3H8) or ternary mixture (H2, C3H8, and C3H6) under a wide temperature range (25–600°C) with the aim of using them for propane dehydrogenation (PDH) reactions at high temperature. The results show excellent performance for H2/C3H8 and H2/ C3H8 & C3H6 separation, with high H2 permeance of 3.1 × 10−7 mol/m2/s/Pa and H2/C3H8 selectivity of 41 at 600°C. Additionally, the membrane shows stable performance for 140 hr of H2/C3H8 separation test at 600°C. The high performance of this membrane is mainly attributed to the thin (∼2 μm) zeolite layer and asymmetric-wall of the hollow fiber support. So far, this membrane offers the highest hydrogen permeation and selectivity for H2/C3H8 separation at high temperature (600°C) compared to those reported in literature.

Original languageEnglish (US)
Article numbere16278
JournalAIChE Journal
Volume66
Issue number9
DOIs
StatePublished - Sep 1 2020

Keywords

  • H permeation
  • SAPO-34 zeolite membrane; inorganic hollow fiber
  • high temperature application
  • propane dehydrogenation

ASJC Scopus subject areas

  • Biotechnology
  • Environmental Engineering
  • Chemical Engineering(all)

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    Wang, Z., Xu, J., Pati, S., Chen, T., Deng, Y., Dewangan, N., Meng, L., Lin, J. Y. S., & Kawi, S. (2020). High H2 permeable SAPO-34 hollow fiber membrane for high temperature propane dehydrogenation application. AIChE Journal, 66(9), [e16278]. https://doi.org/10.1002/aic.16278