The Synthesis and Application of CuO-ZnO/HZSM-5 Catalyst With Core-shell Structure

摘要

CuO-ZnO/HZSM-5 catalyst was prepared hydrothermally by CuO-ZnO as the core and HZSM-5 as the shell and used in hydrogenation of CO_2 to produce dimethyl ether. The morphologies, phase structure, and acid properties of this catalyst were investigated with transmission electron microscopy, X-ray diffraction, and NH3-temperature programmed desorption in detail. The experimental results showed that the catalyst exhibited higher catalytic activity compared with the catalysts prepared by traditional mechanically mixing method and impregnation method.