Tubular dual-layer MFI zeolite membrane reactor for hydrogen production via the WGS reaction

Experimental and modeling studies

Xueliang Dong, Haibing Wang, Zebao Rui, Jerry Lin

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Water-gas shift (WGS) reaction is an important intermediate step in converting fossil fuels to hydrogen (H2) for chemical production or power generation. Catalytic membrane reactor with a H2 perm-selective membrane can improve WGS reaction conversion and separate H2 from carbon dioxide (CO2) simultaneously. In this work, experimental work and modeling analysis were performed on WGS in a tubular ZSM-5/silicalite bilayer membrane composed of a 3μm ZSM-5 layer, a 8μm silicalite base layer and a 2μm YSZ barrier layer supported on α-alumina substrate. The experimental and modeling studies demonstrated that temperature, H2O/CO ratio, gas hourly space velocity (GHSV) and feed pressure are key factors that determine the WGS performance in the tubular zeolite membrane reactor. At 500°C and under 5atm with the H2O/CO ratio of 3.0 and GHSV of 72,000h-1, the CO conversion and H2 recovery reached 89.8% and 28.5%, respectively. Appropriate temperature, pressure, H2O/CO ratio and GHSV are crucial to obtain high reaction performance. Modeling analysis coupled with experimental data identifies the optimum operation conditions (550°C, feed pressure of 20atm, H2O/CO ratio of 2.0, GHSV of 60,000h-1) under which one can achieve both high CO conversion (>95%) and H2 recovery (>90%) for WGS in this zeolite membrane reactor.

Original languageEnglish (US)
Pages (from-to)219-229
Number of pages11
JournalChemical Engineering Journal
Volume268
DOIs
StatePublished - 2015

Fingerprint

Zeolites
Water gas shift
Carbon Monoxide
Hydrogen production
zeolite
hydrogen
membrane
Membranes
Gases
gas
modeling
water
Recovery
Fossil fuels
Aluminum Oxide
Power generation
Carbon dioxide
Carbon Dioxide
Alumina
reactor

Keywords

  • Hydrogen separation
  • Modeling
  • Tubular membranes
  • Water-gas shift
  • Zeolite membranes

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Industrial and Manufacturing Engineering
  • Environmental Chemistry

Cite this

Tubular dual-layer MFI zeolite membrane reactor for hydrogen production via the WGS reaction : Experimental and modeling studies. / Dong, Xueliang; Wang, Haibing; Rui, Zebao; Lin, Jerry.

In: Chemical Engineering Journal, Vol. 268, 2015, p. 219-229.

Research output: Contribution to journalArticle

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