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Digitale Medien

Alkylation of phenol with dimethyl carbonate over AlPO4, Al2O3 and AlPO4-Al2O3 catalysts (1998)

Bautista, F. M. ; Campelo, J. M. ; Garcia, A. ; [weitere]

Springer

Reaction kinetics and catalysis letters 63 (1998), S. 261-269

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Details

ISSN: 1588-2837

Schlagwort(e): Aluminium orthophosphate (AlPO4) ; AlPO4-Al2O3 ; phenol/dimethyl carbonate alkylation ; activity ; anisole-cresol formation ; selectivity

Quelle: Springer Online Journal Archives 1860-2000

Thema: Chemie und Pharmazie

Notizen: 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.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF02475397

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