摘要
A highly dispersed Cu catalyst supported on silica was prepared by an incipient wetness impregnation method with citric acid.The synthesis was studied by nitrogen physisorption,X-ray diffraction,and temperature-programmed reduction by comparing with a reference prepared without citric acid.The catalyst precursor obtained after impregnation was X-ray amorphous.The precursor was readily transformed to crystalline CuO upon calcination.The CuO particles were of uniform size in a highly dispersed state and can be reduced to Cu at a lower temperature.The activity of the Cu catalyst obtained was an order of magnitude higher than that of the reference for the hydrogenolysis of methyl laurate to dodecanol.
A highly dispersed Cu catalyst supported on silica was prepared by an incipient wetness impregnation method with citric acid. The synthesis was studied by nitrogen physisorption, X-ray diffraction, and temperature-programmed reduction by comparing with a reference prepared without citric acid. The catalyst precursor obtained after impregnation was X-ray amorphous. The precursor was readily transformed to crystalline CuO upon calcination. The CuO particles were of uniform size in a highly dispersed state and can be reduced to Cu at a lower temperature. The activity of the Cu catalyst obtained was an order of magnitude higher than that of the reference for the hydrogenolysis of methyl laurate to dodecanol.
出处
《催化学报》
SCIE
EI
CAS
CSCD
北大核心
2008年第6期566-570,共5页
基金
Supported by Malaysian Ministry of Science, Technology and Innovation (IRPA-SR-03-02-03-3010)
关键词
柠檬酸
铜
催化剂
氢解
incipient wetness impregnation
highly dispersed
copper
supported catalyst
citric acid
hydrogenolysis
