Tandem of Ammonia Borane Dehydrogenation and Phenylacetylene Hydrogenation Catalyzed by PdCo/Quasi NH2-Ce-BDC
Catalytic semi hydrogenation of phenylacetylene to styrene is an important process to optimize the production of polystyrene,and the preparation of highly active and selective hydrogenation catalyst is of great significance to inhibit the excessive hydrogenation of phenylacetylene and improve the yield of styrene.In this paper,the tandem catalytic reactions of ammonia borane dehydrogenation and phenylacetylene hydrogenation are designed.Using Quasi NH2-Ce-BDC as support,the catalyst loaded with PdCo nanoparticles is used for tandem catalysis.XRD,XPS and CO-DRIFTS results show that there is a synergistic effect between the metal and the Quasi NH2-Ce-BDC support in the catalyst.More importantly,the in-situ hydrogen production of ammonia borane in the tandem reaction improves the mass transfer efficiency of active hydrogen,thereby promoting the catalytic reaction.
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