Oxidation resistance of Ni/La0.7Sr0.3AlO 3-δ catalyst for steam reforming of model aromatic hydrocarbon

Yukihiro Sugiura, Daiki Mukai, Yuki Murai, Satoshi Tochiya, Yasushi Sekine

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Oxidative resistance of Ni catalysts supported on various oxides La 0.7Sr0.3AlO3-δ, LaAlO3, and α-Al2O3 were investigated for hydrogen production by steam reforming of model aromatic hydrocarbons. Ni/α-Al2O 3 lost its steam reforming activity by oxidation treatment. In contrast, Ni/La0.7Sr0.3AlO3-δ and Ni/LaAlO3 catalysts showed steam reforming activity even after the oxidation treatment. The XANES (X-ray absorption near-edge structure) spectra at Ni K-edge for Ni/La0.7Sr0.3AlO3-δ and Ni/α-Al2O3 after oxidation treatment revealed that the supported Ni on La0.7Sr0.3AlO3-δ and α-Al2O3 were oxidized completely. Although the mean particle size of Ni on Ni/α-Al2O3 increased by oxidation treatment or reduction treatment, Ni particles on Ni/La 0.7Sr0.3AlO3-δ retained the fine structure after oxidation treatment or reduction treatment. Moreover, TPR (temperature programmed reduction) and XPS (X-ray photoelectron spectroscopy) measurements for elucidating the reducibility of Ni/La0.7Sr 0.3AlO3-δ showed that the supported Ni on La 0.7Sr0.3AlO3-δ was easily reduced even after the oxidation treatment.

Original languageEnglish
Pages (from-to)7822-7829
Number of pages8
JournalInternational Journal of Hydrogen Energy
Volume38
Issue number19
DOIs
Publication statusPublished - 2013 Jun 27

Keywords

  • Ni catalyst
  • Oxidative resistance
  • Perovskite-type oxide support
  • Steam reforming of toluene

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Fingerprint Dive into the research topics of 'Oxidation resistance of Ni/La<sub>0.7</sub>Sr<sub>0.3</sub>AlO <sub>3-δ</sub> catalyst for steam reforming of model aromatic hydrocarbon'. Together they form a unique fingerprint.

  • Cite this