Journal
CATALYSIS COMMUNICATIONS
Volume 123, Issue -, Pages 73-78Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.catcom.2019.01.017
Keywords
Toluene; Molecular oxygen; Selective oxidation; Benzaldehyde; Cobalt oxide; Immobilization
Categories
Funding
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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A cost-effective method for the selective oxidation of toluene to benzaldehyde was developed based on immobilized CoOx on SiO2 catalyst with predominating cobaltous ions in the presence of N-hydroxyphthalimide (NHPI) and hexafluoropropan-2-ol (HFIP) using ambient molecular oxygen at room temperature. A toluene conversion of 91% and a selectivity to benzaldehyde of 68% were realized. HFIP was confirmed to work as a restraining agent against the further oxidation of benzaldehyde to benzoic acid on the immobilized CoOx/SiO2 catalyst in the presence of NHPI and HFIP.
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