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Gas‐Phase Hydrogenolysis of Glycerol Catalyzed by Cu/MO x Catalysts
Author(s) -
Feng Y.,
Yin H.,
Shen L.,
Wang A.,
Shen Y.,
Jiang T.
Publication year - 2013
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201200263
Subject(s) - hydrogenolysis , catalysis , ethylene glycol , copper , selectivity , glycerol , chemistry , metal , ethylene , inorganic chemistry , atmospheric temperature range , phase (matter) , incipient wetness impregnation , nuclear chemistry , organic chemistry , physics , meteorology
Abstract The catalytic activities of Cu/MO x (MO x = Al 2 O 3 , TiO 2 , and ZnO) catalysts in the gas‐phase hydrogenolysis of glycerol were studied at 180–300 °C under 0.1 MPa of H 2 . Cu/MO x (MO x = Al 2 O 3 , TiO 2 , and ZnO) catalysts were prepared by the incipient wetness impregnation method. After reduction, CuO species were converted to metallic copper (Cu 0 ). Cu/Al 2 O 3 catalysts with high acidity, high specific surface areas and small metallic copper size favored the formation of 1,2‐propanediol with a maximum selectivity of 87.9 % at complete conversion of glycerol and a low reaction temperature of 180 °C, and favored the formation of ethylene glycol and monohydric alcohols at high reaction temperature of 300 °C. Cu/TiO 2 and Cu/ZnO catalysts exhibited high catalytic activity toward the formation of hydroxyacetone with a selectivity of approx. 90 % in a wide range of reaction temperature.