Catalytic steam reforming of biomass-derivatives for hydrogen production

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

Abstract

Catalytic steam reforming of bio-ethanol and bio-tar for hydrogen production was studied. As for bio-ethanol steam reforming, Co-catalyst showed higher performance than others. Loading of 1-2 wt% K on Co/α-Al2O3 was effective for improving catalytic activity, hydrogen selectivity and suppressing byproduct (CH4, C2H4, and coke) formations. TEM measurements showed that the Co0-CoO core-shell structure was formed over Co/K/α-Al2O3 during ethanol steam reforming at 823 K, suggesting that the oxidized Co species (CoO) is a highly active species in ethanol steam reforming. In-situ IR measurements revealed that the adsorbed ethanol forms stable acetate species by K loading, which improves hydrogen selectivity. Applying electric field to the catalyst bed enabled low temperature hydrogen production. Pt/CeO2 catalyst showed high activity in an electric field even at 423 K. The supported platinum worked as an active site for the ethanol steam reforming. Ethanol conversion and H2 yield drastically increased with imposing the electric field, and apparent activation energies for three elementary reactions (ethanol dehydrogenation, acetaldehyde decomposition, and acetaldehyde steam reforming) were lowered by the electric field. For bio-tar steam reforming, Ni/perovskite catalysts showed excellent features including less coke formation. Ni/Al2O3 showed much coke formation, aggregated by oxidation or longer catalytic activity test, and lost its steam reforming activity by oxidation treatment. In contrast, Ni/La0.7Sr0.3AlO3-d catalyst showed high and stable steam reforming activity even after the oxidation treatment. Ni particles on Ni/La0.7Sr0.3AlO3-d retained the fine structure after oxidation treatment or reduction treatment.

Original languageEnglish
Title of host publication28th Annual Saudi-Japan Symposium on Technology in Petroleum Refining and Petrochemicals 2018
PublisherKing Fahd University of Petroleum and Minerals
Number of pages1
ISBN (Electronic)9781510877436
Publication statusPublished - 2018 Jan 1
Externally publishedYes
Event28th Annual Saudi-Japan Symposium on Technology in Petroleum Refining and Petrochemicals 2018 - Dhahran, Saudi Arabia
Duration: 2018 Nov 122018 Nov 13

Publication series

NameKing Fahd University of Petroleum and Minerals, Research Institute - Annual Catalysts in Petroleum Refining and Petrochemicals Symposium Papers
Volume2018-November

Conference

Conference28th Annual Saudi-Japan Symposium on Technology in Petroleum Refining and Petrochemicals 2018
CountrySaudi Arabia
CityDhahran
Period18/11/1218/11/13

Fingerprint

Catalytic reforming
Steam reforming
Hydrogen production
Biomass
Ethanol
Derivatives
Catalysts
Electric fields
Coke
Tars
Catalyst activity
Oxidation
Acetaldehyde
Catalyst selectivity
Tar
Low temperature production
Hydrogen
Shells (structures)
Dehydrogenation
Platinum

ASJC Scopus subject areas

  • Catalysis
  • Energy Engineering and Power Technology
  • Fuel Technology
  • Chemistry(all)

Cite this

Sekine, Y. (2018). Catalytic steam reforming of biomass-derivatives for hydrogen production. In 28th Annual Saudi-Japan Symposium on Technology in Petroleum Refining and Petrochemicals 2018 (King Fahd University of Petroleum and Minerals, Research Institute - Annual Catalysts in Petroleum Refining and Petrochemicals Symposium Papers; Vol. 2018-November). King Fahd University of Petroleum and Minerals.

Catalytic steam reforming of biomass-derivatives for hydrogen production. / Sekine, Yasushi.

28th Annual Saudi-Japan Symposium on Technology in Petroleum Refining and Petrochemicals 2018. King Fahd University of Petroleum and Minerals, 2018. (King Fahd University of Petroleum and Minerals, Research Institute - Annual Catalysts in Petroleum Refining and Petrochemicals Symposium Papers; Vol. 2018-November).

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

Sekine, Y 2018, Catalytic steam reforming of biomass-derivatives for hydrogen production. in 28th Annual Saudi-Japan Symposium on Technology in Petroleum Refining and Petrochemicals 2018. King Fahd University of Petroleum and Minerals, Research Institute - Annual Catalysts in Petroleum Refining and Petrochemicals Symposium Papers, vol. 2018-November, King Fahd University of Petroleum and Minerals, 28th Annual Saudi-Japan Symposium on Technology in Petroleum Refining and Petrochemicals 2018, Dhahran, Saudi Arabia, 18/11/12.
Sekine Y. Catalytic steam reforming of biomass-derivatives for hydrogen production. In 28th Annual Saudi-Japan Symposium on Technology in Petroleum Refining and Petrochemicals 2018. King Fahd University of Petroleum and Minerals. 2018. (King Fahd University of Petroleum and Minerals, Research Institute - Annual Catalysts in Petroleum Refining and Petrochemicals Symposium Papers).
Sekine, Yasushi. / Catalytic steam reforming of biomass-derivatives for hydrogen production. 28th Annual Saudi-Japan Symposium on Technology in Petroleum Refining and Petrochemicals 2018. King Fahd University of Petroleum and Minerals, 2018. (King Fahd University of Petroleum and Minerals, Research Institute - Annual Catalysts in Petroleum Refining and Petrochemicals Symposium Papers).
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