首页|MOF-assisted Synthesis of Dual-atom Palladium Catalysts for Acetylene Semi-hydrogenation
MOF-assisted Synthesis of Dual-atom Palladium Catalysts for Acetylene Semi-hydrogenation
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The selective removal of trace acetylene in ethylene feed gas is of great significance in the petrochemical industry;however,there are still challenges in designing and developing high-performance catalysts.Here,a MOF-assisted encapsulation strategy was adopted for the precise synthesis of diatomic Pd2 sites on a ZnO support.When used for the acetylene semi-hydrogenation reaction,the dual-atom Pd2-ZnO catalyst exhibited improved catalytic performance,achieving complete conversion of acetylene at 125℃ with an 89％selectivity to ethene,as compared to Pd single-atom and nanoparticles.This enhancement was mainly attributed to the catalyst's ability to dissociate H2 and facilitate the desorption of intermediate C2H4.Moreover,the strong interaction between the support and the diatomic Pd sites was responsible for the catalyst's excellent stability during the long-term reaction.
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