Journal ArticleDOI
Autothermal methanol reforming for hydrogen production in fuel cell applications
Konrad Geissler,Esmond Newson,Frédéric Vogel,Thanh-Binh Truong,Peter Hottinger,Alexander Wokaun +5 more
Reads0
Chats0
TLDR
In this paper, a simplified model of the reaction network, consisting of the total oxidation of methanol, the reverse water-gas shift reaction, and the steam-reforming, is proposed.Abstract:
Fuel cell powered electric cars using on-board methanol reforming to produce a hydrogen-rich gas represent a low-emissions
alternative to gasoline internal combustion engines (ICE). In order to exceed the well-to-wheel efficiencies
of 17% for the gasoline ICE, high-efficiency fuel cells and methanol reformers must be developed.
Catalytic autothermal reforming of methanol offers advantages over endothermic steam-reforming
and exothermic partial oxidation. Microreactor testing of copper-containing catalysts was carried out
in the temperature range between 250 and 330°C showing nearly complete methanol conversion at 85% hydrogen yield.
For the overall process a simplified model of the reaction network, consisting of the total oxidation of
methanol, the reverse water-gas shift reaction, and the steam-reforming of methanol, is proposed. Individual kinetic measurements
for the latter two reactions
on a commercial Cu/ZnO/Al2O3 catalyst are presented.read more
Citations
More filters
Journal ArticleDOI
An overview of hydrogen production technologies
TL;DR: A review of technologies related to hydrogen production from both fossil and renewable biomass resources including reforming (steam, partial oxidation, autothermal, plasma, and aqueous phase) and pyrolysis is presented in this article.
Journal ArticleDOI
On the mechanism of low-temperature water gas shift reaction on copper.
TL;DR: Periodic, self-consistent density functional theory (DFT-GGA) calculations are used to investigate the water gas shift reaction (WGSR) mechanism on Cu(111) and identify carboxyl, a new reactive intermediate, which plays a central role in WGSR.
Journal ArticleDOI
Review of fuel processing catalysts for hydrogen production in PEM fuel cell systems
TL;DR: In this article, the advances achieved during the past few years in the development of catalytic materials for hydrogen generation through fuel reforming, 1 water-gas shift and carbon monoxide preferential oxidation, as used or aimed to be of use in fuel processing for PEM fuel cell systems.
Journal ArticleDOI
Hydrogen production over titania-based photocatalysts
TL;DR: A critical, up-to-date overview of the development of titania-based photocatalysts for hydrogen production is provided, as well as a comprehensive background source and guide for future research.
Journal ArticleDOI
Steam reforming of methanol over a Cu/ZnO/Al2O3 catalyst : a kinetic analysis and strategies for suppression of CO formation
TL;DR: In this paper, a simple power-law rate expression was fitted to experimental data in order to predict the rates of CO2 and H-2 formation under various reaction conditions, and the apparent activation energy (E-a) was estimated to be 100.9 kJ mol(-1) in good agreement with values reported in the literature.
References
More filters
Journal ArticleDOI
Methanol–steam reforming on Cu/ZnO/Al2O3 catalysts. Part 2. A comprehensive kinetic model
TL;DR: In this article, the authors developed a surface mechanism for methanol-steam reforming on Cu/ZnO/Al 2 O 3 catalysts which account for all three of the possible overall reactions: (i) hydrogen adsorption does not compete for the active sites which the oxygen-containing species adsorb on, (ii) there are separate active sites for the decomposition reaction distinct from the other two reactions, and (iii) the rate-determining step (RDS) for both the reaction and the reaction is the dehydrogenation of adsorbed
Journal ArticleDOI
Kinetic study of steam reforming of methanol over copper-based catalysts
TL;DR: In this paper, a coprecipitated CuO-ZnO-Al2O3 low-temperature methanol synthesis catalyst had the highest activity and did not deactivate with time on line.
Journal ArticleDOI
Partial oxidation of methanol to produce hydrogen over CuZn-based catalysts
TL;DR: In this paper, the authors studied the effect of the copper surface area on the catalytic performance of methanol and showed that the performance of the CuZnO and ZnO/Al2O3 catalysts is directly related to the surface area.
Journal ArticleDOI
Hydrogen production by steam reforming of methanol for polymer electrolyte fuel cells
TL;DR: In this paper, a semi-empirical model of the kinetics of the catalytic steam reforming of methanol over CuO/ZnO/Al2O3 catalyst has been developed.
Journal ArticleDOI
On-board hydrogen generation for transport applications: the HotSpot™ methanol processor
Neil Edwards,Suzanne Rose Ellis,Jonathan Charles Frost,Stanislaw E. Golunski,Arjan Nicolaas Johan Van Keulen,Nicklas G Lindewald,Jessica Grace Reinkingh +6 more
TL;DR: In this article, the HotSpot™ Reactor converts methanol, water and air in a single compact catalyst bed into a reformate containing mainly CO2 and hydrogen (and unreacted nitrogen).
Related Papers (5)
Steam reforming of methanol over a Cu/ZnO/Al2O3 catalyst : a kinetic analysis and strategies for suppression of CO formation
Methanol reforming for fuel-cell applications: development of zirconia-containing Cu–Zn–Al catalysts
John Breen,Julian R.H. Ross +1 more