|
|||||
|
|
Phenol methylation over CrPO4 and CrPO4?AlPO4 catalysts |
|
| Authors: | F M Bautista J M Campelo A Garcia D Luna J M Marinas A A Romero and M R Urbano |
| Institution: | (1) Department of Organic Chemistry, Sciences Faculty, Cordoba University, Avda. S. Alberto Magno, s/no, E-14004 Cordoba, Espa?a |
| Abstract: | The vapor-phase catalytic alkylation of phenol with methanol and dimethyl carbonate on a series of differently prepared CrPO4 (Cr/P=1) and CrPO4-AlPO4 (CrAIP) catalysts, has been studied at different temperatures (473–673 K). The reaction is first order in phenol, giving a mixture of O- and C-alkylated products (C-alkylation taking place preferentially at theortho-position). Moreover, dimethyl carbonate is a better methylating agent than methanol. |
| Keywords: | chromium orthophosphate (CrPO4) chromium aluminium orthophosphates (CrPO4-AIPO4) surface acidity phenol/methanol and phenol/dimethyl carbonate alkylation activity selectivity |
| 本文献已被 SpringerLink 等数据库收录！ | |