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

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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.

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Authors and Affiliations

  1. Department of Organic Chemistry, Sciences Faculty, Cordoba University, Avda. S. Alberto Magno, s/no, E-14004, Cordoba, Spain

    F. M. Bautista, J. M. Campelo, A. Garcia, D. Luna, J. M. Marinas & A. A. Romero

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  1. F. M. Bautista
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  2. J. M. Campelo
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  3. A. Garcia
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  4. D. Luna
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  5. J. M. Marinas
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  6. A. A. Romero
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Bautista, F.M., Campelo, J.M., Garcia, A. et al. Alkylation of phenol with dimethyl carbonate over AlPO4, Al2O3 and AlPO4-Al2O3 catalysts. React Kinet Catal Lett 63, 261–269 (1998). https://doi.org/10.1007/BF02475397

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  • DOI: https://doi.org/10.1007/BF02475397

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