Catalyst for hydrogenation of unsaturated hydrocarbon in carbon monoxide industrial gas into saturated hydrocarbon, preparation method and application thereof

The invention relates to hydrogenation reaction catalysts, in particular to a catalyst for hydrogenation of unsaturated hydrocarbon in carbon monoxide industrial gas into saturated hydrocarbon, a preparation method and application thereof. The catalyst comprises, by weight percentage, 0.05-0.5% of a main active component, 0.5-5% of a first assistant, 0.5-10% of a second assistant, and the balance a carrier. Specifically, the main active component is palladium, the first assistant can be one or two of K, Mg, Ca, Na, Ba, Ag, Cu, Mn, Zr and W, the second assistant can be one or two of rare earth metals Ce, La and Sm, and the carrier can be Al2O3 or Al2O3-TiO2. The unsaturated hydrocarbon hydrogenation catalyst prepared by the method provided by the invention has the characteristics of high hydrogenation precision, high selectivity, low operation temperature, large unit volume air processing capacity and the like, is suitable for hydrogenation of unsaturated hydrocarbon into corresponding saturated hydrocarbon, a