ISSN:
1588-2837
Keywords:
Aluminium orthophosphate (AlPO4)
;
AlPO4-Al2O3
;
phenol/dimethyl carbonate alkylation
;
activity
;
anisole-cresol formation
;
selectivity
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The vapor-phase catalytic alkylation of phenol with dimethyl carbonate over different AlPO4 (Al/P=1), Al2O3 and AlPO4-Al2O3 (5–25 wt.% Al2O3) catalysts produces anisole (O-alkylation) as the major reaction product althougho-cresol (C-alkylation) and methylanisoles were also found. The reaction is first order in phenol while O-and C-alkylation follow parallel processes. As compared with methanol, DMC is far more effective as a methylating agent, and the methylation proceeds at a lower temperature and with higher O-alkylation selectivity.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02475397
