Experimental study on a compact methanol steam reformer with Pd/Ag membrane

Hasan Mohd Faiza, Masato Kuwabara, Ryo Kizu, Takeshi Yokomori, Toshihisa Ueda

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The performance of high purity hydrogen production from methanol for a compact steam reformer with a hydrogen purification membrane was investigated experimentally. A 77 wt.% Pd/23 wt.% Ag membrane with 25μm thickness and CuO/ZnO/ Al2O3 catalyst were used. Heating was performed by a Bunsen type burner using City Gas 13A. The methanol reforming and purification of H2 were investigated at different reference catalyst zone temperatures (589-689K), pressures at the retentate side (0.2-0.5MPa), steam to methanol(S/C) ratios (0.8-1.6) and reactant flow rates (1.7 ×10-4 to 4.4×10-4 mol/s). The results show that at high reference temperature, high pressure and certain points of the reactant flow rate, the maximum hydrogen permeation rate is obtained when the S/C ratio is around 1. The modified Sieverts' equation which considers the decrease in H2 concentration at the membrane surface, was proposed. The experimental result was lower than the permeation rate estimated by the modified Sieverts' equation, which is probably caused by the adsorption of non-H2 species during permeation. It is further demonstrated that the modified Sieverts' equation is able to estimate a more reasonable hydrogen permeation rate in comparison to the estimation by the ordinary Sieverts' equation. In addition, it is shown that the compact methanol steam reformer with a Pd/Ag membrane is able to produce high purity hydrogen with very low CO concentration, which fulfills the Polymer Electrolyte Fuel Cell (PEFC) requirement (<10ppm).

Original languageEnglish
Pages (from-to)135-150
Number of pages16
JournalJournal of Thermal Science and Technology
Volume7
Issue number1
DOIs
Publication statusPublished - 2012

Fingerprint

Steam
Permeation
steam
Methanol
Hydrogen
methyl alcohol
membranes
Membranes
hydrogen
purification
Purification
purity
flow velocity
Flow rate
catalysts
Catalysts
burners
hydrogen production
Carbon Monoxide
Reforming reactions

Keywords

  • Compact steam reformer
  • Fuel cell
  • Hydrogen
  • Methanol
  • Pd/Ag membrane
  • PEFC
  • Sieverts' equation

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Materials Science(all)
  • Instrumentation

Cite this

Experimental study on a compact methanol steam reformer with Pd/Ag membrane. / Faiza, Hasan Mohd; Kuwabara, Masato; Kizu, Ryo; Yokomori, Takeshi; Ueda, Toshihisa.

In: Journal of Thermal Science and Technology, Vol. 7, No. 1, 2012, p. 135-150.

Research output: Contribution to journalArticle

Faiza, Hasan Mohd ; Kuwabara, Masato ; Kizu, Ryo ; Yokomori, Takeshi ; Ueda, Toshihisa. / Experimental study on a compact methanol steam reformer with Pd/Ag membrane. In: Journal of Thermal Science and Technology. 2012 ; Vol. 7, No. 1. pp. 135-150.
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