A series of complex oxide La_(1-x)Ce_xCoO_3 catalysts were synthesized at low temperature through a combustion process,in which x is among 0,0.1,0.2,0.4 and 0.6 corresponding to the quantity of La~(3+) partial substitution by Ce~(4+).And the catalysts were characterized for phase composition using chemical analysis and x-ray diffraction.The surface characterization of the catalysts was determined by SEM.The catalytic activity of the catalysts in removal of NO_x,THC and particulate matter(PM) from diesel exh...
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