期刊
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
卷 351, 期 -, 页码 188-195出版社
ELSEVIER
DOI: 10.1016/j.molcata.2011.10.005
关键词
Au/Co3O4; Toluene and p-xylene oxidation; Electrophilic oxygen species; Oxygen vacancies; Strong interaction
资金
- National Natural Science Foundation of China [50771082, 60776822]
- Northwestern Polytechnical University [Z2011011]
Gold supported on cobalt oxide has been successfully synthesized through a colloidal precipitation method and tested in toluene and p-xylene total oxidation. It has been demonstrated that the catalytic activity of Au/Co3O4 for toluene and p-xylene oxidation is much higher than that of Au/Al2O3 and Au/MgO in spite of its lower BET surface area and larger gold crystalline size. The enhanced catalytic activity in toluene and p-xylene oxidation has been linked to a high concentration of superficial electrophilic oxygen species and oxygen vacancies, which may be originated from a strong interaction in the colloidal Au-Co3O4 system. (C) 2011 Elsevier B.V. All rights reserved.
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