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Use of Citric Acid in Synthesizing a Highly Dispersed Copper Catalyst for Selective Hydrogenolysis

✍ Scribed by Ming-Hoong LOOI; Shuk-Tong LEE; Sharifah Bee ABD-HAMID

Publisher
Elsevier Science
Year
2008
Weight
600 KB
Volume
29
Category
Article
ISSN
1872-2067

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✦ Synopsis

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.

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