The reaction of phenol with anisole was carried out over three X-, six Y-, a ZSM-5 and a ZSM-11 zeolites, and over γ-Al2O3, in a fixed-bed continuous reactor. Alkylation products were cresols (o>p>m), xylenols and methylanisoles; also some dealkylation of anisole to phenol occurred. Selectivity to cresols and xylenols in the range 45-60% and 25-30%, respectively, at anisole conversions of around 90%, were reached with HY and HNaY zeolites, and with γ-Al2O3, when operating over fresh catalysts. Alkylations were particularly ortho-selective over γ-Al2O3.
ALKYLATION OF PHENOL WITH ANISOLE OVER ZEOLITES OR GAMMA-ALUMINA / P. BELTRAME, P. BELTRAME, P. CARNITI, A. CASTELLI, L. FORNI. - In: APPLIED CATALYSIS. - ISSN 0166-9834. - 29:2(1987), pp. 327-334.
ALKYLATION OF PHENOL WITH ANISOLE OVER ZEOLITES OR GAMMA-ALUMINA
P. BELTRAMEPrimo
;P. CARNITI;L. FORNIUltimo
1987
Abstract
The reaction of phenol with anisole was carried out over three X-, six Y-, a ZSM-5 and a ZSM-11 zeolites, and over γ-Al2O3, in a fixed-bed continuous reactor. Alkylation products were cresols (o>p>m), xylenols and methylanisoles; also some dealkylation of anisole to phenol occurred. Selectivity to cresols and xylenols in the range 45-60% and 25-30%, respectively, at anisole conversions of around 90%, were reached with HY and HNaY zeolites, and with γ-Al2O3, when operating over fresh catalysts. Alkylations were particularly ortho-selective over γ-Al2O3.
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