Direct oxidation of cyclohexane to adipic acid by a WFeCoO(OH) catalyst: role of bronsted acidity and oxygen vacancies
| Title | Direct oxidation of cyclohexane to adipic acid by a WFeCoO(OH) catalyst: role of bronsted acidity and oxygen vacancies |
| Publication Type | Journal Article |
| Year of Publication | 2021 |
| Authors | Vernekar, D, Dayyan, M, Ratha, S, ,, M. Haider, A, Khan, TSuvra, Jagadeesan, D |
| Journal | ACS Catalysis |
| Volume | 11 |
| Issue | 17 |
| Pagination | 10754-10766 |
| Date Published | SEP |
| Type of Article | Article |
| ISSN | 2155-5435 |
| Keywords | Adipic Acid, deprotonation energy, metal oxyhydroxides, multifunctional catalysts, oxygen vacancies |
| Abstract | This work reports the catalytic activity of the trimetallic mixed-metal oxyhydroxide WFeCoO(OH) for the direct oxidation of cyclohexane to adipic acid (AA) without the use of concentrated HNO3. WFeCoO(OH) displayed a 40% conversion of cyclohexane and a 67% selectivity to AA under relatively milder conditions of temperature (90 degrees C) and pressure (1 atm). Experimental evidence confirmed the presence of acidic, basic, and redox sites on WFeCoO(OH). The detailed investigation revealed that doping W in the Co-FeO(OH) matrix increased the amount of surface lattice oxygen (OS-L) and caused a significant surge in acidity (5.1 mmol/g). The calculated deprotonation energy of WFeCoO(OH) was 1434 kJ/mol, and the trend in acidity was WCoO(OH) |
| DOI | 10.1021/acscatal.1c01464 |
| Type of Journal (Indian or Foreign) | Foreign |
| Impact Factor (IF) | 13.084 |
Divison category:
Chemical Engineering & Process Development
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