Y2O3-promoted NiO/SBA-15 catalysts highly active for CO2/CH4 reforming

J. F. Li, C. Xia, Chak Tong AU, B. S. Liu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

74 Citations (Scopus)

Abstract

A series of Y2O3-promoted NiO/SBA-15 (9 wt% Ni) catalysts (Ni:Y weight ratio = 9:0, 3:1, 3:2, 1:1) were prepared using a sol-gel method. The fresh as well as the catalysts used in CO2 reforming of methane were characterized using N2-physisorption, XRD, FT-IR, XPS, UV, HRTEM, H2-TPR, O2-TPD and TG techniques. The results indicate that upon Y2O3 promotion, the Ni nanoparticles are highly dispersed on the mesoporous walls of SBA-15 via strong interaction between metal ions and the HO-Si-groups of SBA-15. The catalytic performance of the catalysts were evaluated at 700 °C during CH4/CO2 reforming at a gas hourly space velocity of 24 L gcat-1 h-1(at 25 °C and 1 atm) and CH4/CO 2molar ratio of 1. The presence of Y2O3 in NiO/SBA-15 results in enhancement of initial catalytic activity. It was observed that the 9 wt% Y-NiO/SBA-15 catalyst performs the best, exhibiting excellent catalytic activity, superior stability and low carbon deposition in a time on stream of 50 h.

Original languageEnglish
Pages (from-to)10927-10940
Number of pages14
JournalInternational Journal of Hydrogen Energy
Volume39
Issue number21
DOIs
Publication statusPublished - 15 Jul 2014

Scopus Subject Areas

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

User-Defined Keywords

  • High stability
  • Oxygen vacancies
  • Y-NiO/SBA-15 catalyst

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