
Abstract. A series ofmordenite-based catalysts of varying acidity and metal concentrations were prepared and the effect of physico-chemical properties of these catalysts on the n-hexane isomerization activity was studied. Acid treatment with nitric acid greatly influenced the nature and amount of aluminum in the zeolite characterized by 29Si and 27Al NMR. The microcalorimerty studies of amm…

Abstract. Nano-ZSM-5 (NZ) with well-defined porosity was synthesized by organic silica method. The material exhibited more than a twofold increase in pore volume when compared to the normal ZSM-5 (HZ). The increase in pore volume is observed in the entire range of the pores with diameter from 5A˚ to 1500A˚ . The order of increase in volume is macropores (>500A˚ ) > micropores (up to 20A�…