Pd-Ti-K CATALYST FOR SELECTIVE HYDROGENATION OF ACETYLENE AND PREPARATION METHOD OF THE SAME

摘要

PURPOSE: A catalyst for selective hydrogenation of acetylene is provided which has high acetylene selectivity and reaction activity even though the regenerated catalyst is reduced at low temperature after regenerating a catalyst, and a preparation method of the catalyst for selective hydrogenation of acetylene is provided. CONSTITUTION: In a hydrogenation catalyst for selectively hydrogenating acetylene in ethylene containing acetylene, the hydrogenation catalyst comprises 0.05 to 2.0 wt.% of palladium, 0.02 to 1.0 wt.% of titanium and 0.0002 to 7.4 wt.% of potassium with the balance being a support. In a preparation method of a hydrogenation catalyst for selectively hydrogenating acetylene into ethylene, the preparation method comprises first process of supporting palladium onto the support by drying and firing the aqueous solution impregnated support after impregnating a support with a tetraamine palladium hydroxide aqueous solution; second process of supporting titanium onto the support by drying and firing the titanium compound solution impregnated palladium supported support after impregnating the palladium supported support (Pd catalyst) with a titanium compound solution; third process of supporting potassium onto the support by drying and firing the potassium compound aqueous solution impregnated support after impregnating the palladium and titanium supported support (Pd-Ti catalyst) with a potassium compound aqueous solution; and fourth process of reducing the palladium, titanium and potassium supported support (Pd-Ti-K catalyst) at a temperature of 200 to 600 deg.C for 1 to 5 hours.