INVESTIGADORES
SAD Maria eugenia
congresos y reuniones científicas
Título:
Synthesis of intermediates for fine chemicals: Alkylation of phenol to p-cresol
Autor/es:
MARÍA EUGENIA SAD; CRISTINA LILIANA PADRÓ; CARLOS RODOLFO APESTEGUÍA
Lugar:
Seul, Korea
Reunión:
Congreso; 14th International Congress on Catalysis; 2008
Resumen:
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The synthesis of p-cresol by methylation of phenol was studied on zeolites
HBEA, HZSM5 and HMCM22, SiO2-Al2O3 and HPA/SiO2.
HBEA contained a high density of Brönsted and Lewis acid sites and was
particular active for producing cresols while SiO2-Al2O3
exhibited the lowest phenol conversion rate.
HZSM5 was less active than HBEA because the pore structure of HZSM5
hampered the formation of bulky intermediates.
However, HZSM5 did not improve the
p-cresol selectivity. In contrast, p-cresol was the predominant
product on HMCM22 because its narrow 10-membered ring channels were
particularly suitable for improving by shape selectivity the formation of
p-cresol.
