Liquid phase oxidation of p-vanillyl alcohol over synthetic Co-saponite catalyst
| Title | Liquid phase oxidation of p-vanillyl alcohol over synthetic Co-saponite catalyst |
| Publication Type | Journal Article |
| Year of Publication | 2011 |
| Authors | Garade, AC, Biradar, NS, Joshi, SM, Kshirsagar, VS, Jha, RKumar, Rode, CV |
| Journal | Applied Clay Science |
| Volume | 53 |
| Issue | 2 |
| Pagination | 157-163 |
| Date Published | AUG |
| ISSN | 0169-1317 |
| Keywords | Co-saponite, Cobalt oxide phase ratio, p-Vanillin, p-Vanillyl alcohol oxidation, Porosity transition, Temperature programmed reduction |
| Abstract | Effect of cobalt loading on porosity of synthetic Co-saponite catalysts and on the air oxidation of p-vanillyl alcohol was studied by varying Co content in the range of 5% to 30% using in situ precipitation method. The pore size increased from 1.29 to 3.69 nm indicating a transition from micro to meso porosity, with increase in Co loading from 5% to 30%. The distribution ratio of Co(3)O(4)/CoO phases as estimated from TPR studies, also increased from 0.84 to 1.67 with increase in Co loading from 5% to 13% and remained almost constant (1.7) with further increase in Co loading up to 30%. The highest activity (conversion 55%) and selectivity of 99% to p-vanillin obtained for 13% Co-saponite in p-vanillyl alcohol oxidation was due to the highest distribution ratios of Co(3)O(4)/CoO phases. (C) 2010 Elsevier B.V. All rights reserved. |
| DOI | 10.1016/j.clay.2010.10.026 |
| Type of Journal (Indian or Foreign) | Foreign |
| Impact Factor (IF) | 3.31 |