Hydrogen permeability of palladium alloy membrane at high temperatures in the impurity gases co-existing atmospheres

Atsushi Unemoto, A. Kaimai, T. Otake, Keiji Yashiro, Tatsuya Kawada, J. Mizusaki, T. Tsuneki, I. Yasuda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Hydrogen permeation measurements were carried out with Ag 23wt% Pd alloy membrane of 20μm in thickness so as to clarify the effect of co-existing gases on hydrogen permeability through the steam reforming reaction process. Co-introduction of impurity gases such as H2O, CO2, CO, CH4 with hydrogen did not affect hydrogen permeability of palladium alloy membrane at high temperatures (773K, 873K). The rate determining step was the bulk diffusion of H in the membrane. However, effects of co-existing gases were visible at low temperatures in H2-H2O, H 2-CO, H2-CO2, H2-CH4 atmospheres. Rate equation of surface reaction was obtained from the result of hydrogen permeation measurements. The results of performance simulation by the use of surface reaction rate equation suggested that the effect of impurity gases on hydrogen permeability was negligibly small at high temperatures.

Original languageEnglish
Title of host publication16th World Hydrogen Energy Conference 2006, WHEC 2006
Pages3113-3121
Number of pages9
Publication statusPublished - 2006 Dec 1
Event16th World Hydrogen Energy Conference 2006, WHEC 2006 - Lyon, France
Duration: 2006 Jun 132006 Jun 16

Publication series

Name16th World Hydrogen Energy Conference 2006, WHEC 2006
Volume4

Other

Other16th World Hydrogen Energy Conference 2006, WHEC 2006
CountryFrance
CityLyon
Period06/6/1306/6/16

Keywords

  • High temperatures
  • Impurity gas
  • Membrane reformer
  • Palladium alloy membrane
  • Surface reaction

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology

Fingerprint Dive into the research topics of 'Hydrogen permeability of palladium alloy membrane at high temperatures in the impurity gases co-existing atmospheres'. Together they form a unique fingerprint.

Cite this