Catalysis Letters, Vol.146, No.8, 1505-1516, 2016
Influence of the Preparation Method on Hybrid Catalysts CuO-ZnO-Al2O3 and H-Ferrierite for Syngas Transformation to Hydrocarbons via Methanol
Hybrid catalysts using CuO-ZnO-Al2O3 as a catalyst for the synthesis of methanol and an H-ferrierite zeolite as the dehydration component were prepared using four different methods to study the influence of the method of preparation on the active sites available on both components and the performance of the hybrid catalyst in the conversion of syngas in hydrocarbons. The samples were characterized by X-ray diffraction, N-2 adsorption, temperature-programmed reduction, temperature-programmed desorption of H-2, temperature-programmed desorption of ammonia, and transmission electron microscopy. The samples were tested in a tubular reactor at 2.0 MPa and 350 A degrees C. The preparation methods influenced the interaction between both components and consequently affected the surface properties of each component. The Cu surface area and available acid sites were affected by the preparation method. The coprecipitation-sedimentation method showed a better interaction between both components, a high Cu surface area and a high concentration of strong acid sites. [GRAPHICS]