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Catalytic Performance of Metal Nanoparticles Supported by Ceramic Composite Produced by Partial Reduction of Solid Solution with Dopant
Author(s) -
Fukasawa T.,
Suetsuna T.,
Harada K.,
Suenaga S.
Publication year - 2005
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2005.00503.x
Subject(s) - dopant , catalysis , methanation , materials science , methanol , chemical engineering , ceramic , nanoparticle , composite number , syngas , metal , inorganic chemistry , doping , metallurgy , chemistry , nanotechnology , composite material , organic chemistry , optoelectronics , engineering
A composite with well‐dispersed metal nanoparticles at a ceramic surface was produced by partial reduction of solid solution. It was found that a small amount of dopant, such as Al 2 O 3 , Cr 2 O 3 , or Sc 2 O 3 , accelerated the precipitation of the metal nanoparticles during the reduction. Catalytic performance of the composite for methanol reforming was evaluated. In the Ni‐based catalysts, the dopant decreased the CO production by promoting a methanation reaction, while in the Co‐based catalysts, the dopant did it by inducing a water–gas shift reaction. Co/MgO with Sc 2 O 3 doping showed the most preferable reforming performance, high H 2 production, and CO 2 selectivity.