Palladium-based catalyst for selective hydrogenation of acetylene

摘要: The present invention describes a Pd-catalyst, further consisting of La, Ti, Nb, K or Si, which have high ethylene selectivity even after low temperature reduction in the se-lective hydrogenation acetylene to and production method same. A catalyst consists essentially 0.05 2.0% by weight, based on supported catalyst, palladium one two metals chosen form group consist-ing lanthanum, niobium, titanium, potassium silicon. said is pre-pared following procedure: 1) Impregnating support aqueous solution tetra amine hydroxide, followed drying calcination; 2) second and, if necessary, third metal impregnated impregnating Pd-catalyst precursor calcina-tion; 3) according step (2) then reduced hydrogen at 200°C 600°C for 1 5 hours.