ULFATED zirconia (SZ) and zinc supported sulfated ……zirconia (Zn/SZ) catalysts were synthesized, characterized and evaluated by coumarin synthesis reaction.The reaction was carried by reacting resorcinol and ethyl acetoacetate with a molar ratio 1:2 respectively.The investigated SZ and Zn/SZ catalysts were prepared by the simple impregnation method with an aqueous solution of H 2 SO 4 as a precipi...