Journal of Molecular Catalysis A-Chemical, Vol.212, No.1-2, 301-308, 2004
Comparative studies on alkylation of phenol with tert-butyl alcohol in the presence of liquid or solid acid catalysts in ionic liquids
Alkylation of phenol with tert-butyl alcohol (TBA) was carried out in ionic liquids [bmim]PF6, [omim]BF4, and [hmim]BF4, Comparative studies on the catalytic properties of ionic liquids, H3PO4 and some solid acidic catalysts, such as HZSM-5, H-beta, HPW, and HPW/MCM-41, were carried out under identical reaction conditions. Solvent effect has been as well studied. The use of ionic liquids was found to enhance the catalytic properties of the catalysts used. (C) 2003 Elsevier B.V. All rights reserved.