Compounds responsible for the deactivation of H-USY zeolite during the alkylation of phenol with methanol |
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| Authors: | I. Neves F. Ramoa Ribeiro F. Bouchet P. Magnoux G. Perot M. Guisnet |
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| Affiliation: | (1) Instituto Superior Técnico, GRECAT, 1096 Lisboa Codex, Portugal;(2) UACNRS 350, Université de Poitiers, 86022 Poitiers Cedex, France |
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| Abstract: | H-USY deactivates very rapidly during the alkylation of phenol with methanol at 200°C. The retention in the pores of compounds resulting from successive O- and C-alkylation of phenol (such as polymethylphenols and polymethylanisoles) is responsible for this deactivation. The retention of these compounds in the pores is not due to their steric blockage but to their low volatility and their strong adsorption.
H-USY                     200°C.    ,        -  - , ( -).   ,   . |
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