Large-pore mesoporous RuNi-doped TiO2-Al2O3 nanocomposites for highly efficient selective CO methanation in hydrogen-rich reformate gases

Dai, Xiaoping, Liang, Ji, Ma, Ding, Zhang, Xin, Zhao, Huabo, Zhao, Bo, Guo, Zhenguo, Kleitz, Freddy and Qiao, Shizhang (2015) Large-pore mesoporous RuNi-doped TiO2-Al2O3 nanocomposites for highly efficient selective CO methanation in hydrogen-rich reformate gases. Applied Catalysis B: Environmental, 165 752-762. doi:10.1016/j.apcatb.2014.10.069


Author Dai, Xiaoping
Liang, Ji
Ma, Ding
Zhang, Xin
Zhao, Huabo
Zhao, Bo
Guo, Zhenguo
Kleitz, Freddy
Qiao, Shizhang
Title Large-pore mesoporous RuNi-doped TiO2-Al2O3 nanocomposites for highly efficient selective CO methanation in hydrogen-rich reformate gases
Formatted title
Large-pore mesoporous RuNi-doped TiO2-Al2O3 nanocomposites for highly efficient selective CO methanation in hydrogen-rich reformate gases
Journal name Applied Catalysis B: Environmental   Check publisher's open access policy
ISSN 0926-3373
1873-3883
Publication date 2015-04-01
Year available 2015
Sub-type Article (original research)
DOI 10.1016/j.apcatb.2014.10.069
Open Access Status
Volume 165
Start page 752
End page 762
Total pages 11
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2016
Language eng
Formatted abstract
A series of large-pore mesoporous RuNi-doped TiO2–Al2O3 nanocomposites were prepared by a facile sol–gel method using a one-pot protocol based on evaporation-induced self-assembly. Owing to high density of active sites, an open nanoarchitecture and highly promotional efficiency by synergetic effects, the as-prepared nanocomposites demonstrated excellent catalytic properties in selective CO methanation (CO-SMET). The final concentration of CO can be reduced to less than 50 ppm with more than 50% selectivity over the MRNAT-30Ni catalyst. The working temperature window covered the typical working range of 200–250 °C in conventional upstream low-temperature shift reactors. The MRNAT-30Ni catalyst has excellent stability during 200 h time on stream with no detectable change in CO and CH4 concentrations, and CO in outlet reaches level below 20 ppm under realistic reaction conditions. This remarkable improvement of activity/selectivity and stability could lead to wide implementation of this one-pot protocol for the synthesis of large-pore mesoporous nanocomposite catalysts for the CO-SMET process.
Keyword Selective CO methanation
Mesoporous nanocomposites
One-pot synthesis
Ru doping
Nickel catalysts
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Non HERDC
Australian Institute for Bioengineering and Nanotechnology Publications
 
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