Catalyst for selective hydrogenation of acetylene

Palladium (Pd) is a commonly used catalyst for the selective hydrogenation of acetylene. Pd-based catalysts are highly active and selective towards the hydrogenation of acetylene to ethylene. The selectivity of the catalyst can be improved by modifying the surface of the Pd nanoparticles with promoters such as silver (Ag) or copper (Cu). These promoters enhance the adsorption of acetylene on the catalyst surface, leading to higher selectivity towards the desired product. Moreover, the use of a support material such as alumina (Al2O3) or zeolite can improve the stability and activity of the catalyst. The choice of catalyst and support material depends on the specific reaction conditions and desired product selectivity.