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12-Tungstophosphoricacid (30%) supported onto zirconia was synthesized by impregnation. The synthesized catalyst was characterized by solid state NMR and XPS in order to study the nature of active species on support surface. The acidity of the catalyst was measured by temperature programmed desorption (TPD) of NH 3 . Liquid phase alkylation of phenol and cresols with tert-butyl alcohol was...
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