Performance of PdAu/Al2O3 egg-shell catalyst with isolated Pd1 sites for selective hydrogenation of acetylene

A herein proposed PdAu/Al₂O₃ egg-shell catalyst for selective acetylene hydrogenation combines two factors to provide perfect performance: isolation of Pd₁ active sites by Au and an egg-shell distribution of the active phase across the catalyst pellets. The PdAu/Al₂O₃ catalyst exhibits high acetylene hydrogenation activity at the level of Pd-catalysts and high intrinsic ethylene selectivity of Au-catalysts.