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Selective Hydrogenation of CO 2 to Ethanol over Cobalt Catalysts
Author(s) -
Wang Lingxiang,
Wang Liang,
Zhang Jian,
Liu Xiaolong,
Wang Hai,
Zhang Wei,
Yang Qi,
Ma Jingyuan,
Dong Xue,
Yoo Seung Jo,
Kim JinGyu,
Meng Xiangju,
Xiao FengShou
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201800729
Subject(s) - catalysis , selectivity , cobalt , ethanol , formate , chemistry , yield (engineering) , ethanol fuel , fischer–tropsch process , inorganic chemistry , nuclear chemistry , organic chemistry , materials science , metallurgy
Methods for the hydrogenation of CO 2 into valuable chemicals are in great demand but their development is still challenging. Herein, we report the selective hydrogenation of CO 2 into ethanol over non‐noble cobalt catalysts (CoAlO x ), presenting a significant advance for the conversion of CO 2 into ethanol as the major product. By adjusting the composition of the catalysts through the use of different prereduction temperatures, the efficiency of CO 2 to ethanol hydrogenation was optimized; the catalyst reduced at 600 ° gave an ethanol selectivity of 92.1 % at 140 °C with an ethanol time yield of 0.444 mmol g −1 h −1 . Operando FT‐IR spectroscopy revealed that the high ethanol selectivity over the CoAlO x catalyst might be due to the formation of acetate from formate by insertion of *CH x , a key intermediate in the production of ethanol by CO 2 hydrogenation.