Imine oxidation catalyzed by zinc hydroxyapatite: kinetic studies
| Title | Imine oxidation catalyzed by zinc hydroxyapatite: kinetic studies |
| Publication Type | Journal Article |
| Year of Publication | 2023 |
| Authors | Vishwakarma, R, Vinod, CP, Rathod, VK, Kantam, MLakshmi |
| Journal | ChemistrySelect |
| Volume | 8 |
| Issue | 17 |
| Pagination | e202203503 |
| Date Published | MAY |
| Type of Article | Article |
| ISSN | 2365-6549 |
| Keywords | heterogeneous catalysis, hydroxyapatite, imines, Oxidation, Reaction kinetics |
| Abstract | The synthesis of N,N-diphenylformamide from N-benzylideneaniline and urea hydrogen peroxide is investigated using a zinc hydroxyapatite (ZnHAP) catalyst. It was found that the catalyst resulted in the highest activity of 91 % conversion and 40 % selectivity at 130 degrees C in 2 h. A kinetic model was validated by Langmuir-Hinshelwood-Hougen-Watson (LHHW) at different temperatures and the absence of mass transfer resistance was proved by the Weisz Prater criterion. Effect of different catalysts, catalyst loading, temperature, mole-ratio, and speed of stirring was studied. The as-synthesized catalyst is characterized by FTIR, BET nitrogen adsorption-desorption, TEM, EDX, TPD-NH3, XPS, ICP-MS and XRD. ZnHAP catalyst was found to be stable up to three recycles with no loss in activity. |
| DOI | 10.1002/slct.202203503 |
| Type of Journal (Indian or Foreign) | Foreign |
| Impact Factor (IF) | 2.307 |