Catalyst system for preparing acrylics through acetylene carbonylation as well as preparation and application of catalyst system

The invention relates to a catalyst system for preparing acrylics through acetylene carbonylation and preparation and application thereof, the catalyst system comprises an active component Ru, an active auxiliary agent M and a carrier, and the active auxiliary agent M comprises one or more of Pd, Ni, Cu, Co or Fe; the carrier is a composite carrier composed of CeO2 and a metal oxide BOx, and the BOx is selected from one or more of Al2O3, TiO2 and Nb2O5. Compared with the prior art, the catalyst system is high in catalytic activity and good in stability, and the product selectivity can be improved. 本发明涉及一种乙炔羰基化制备丙烯酸酯类的催化剂体系及其制备与应用，该催化剂体系包含活性组分Ru、活性助剂M和载体，活性助剂M包括Pd、Ni、Cu、Co或Fe中的一种或几种；载体为CeO2和金属氧化物BOx组成的复合载体，BOx选自Al2O3、TiO2和Nb2O5中的一种或几种。与现有技术相比，本发明催化剂体系的催化活性高，稳定性好，且能提高产物选择性。