Hollow PdAg-CeO₂ heterodimer nanocrystals as highly structured heterogeneous catalysts.

ABSTRACT: In the present work, hollow PdAg-CeO₂ heterodimer nanocrystals (NCs) were prepared and tested as catalysts for the selective hydrogenation of alkynes. These nanostructures combine for the first time the beneficial effect of alloying Pd with Ag in a single NC hollow domain with the formation of active sites at the interface with the CeO₂ counterpart in an additive manner. The PdAg-CeO₂ NCs display excellent alkene selectivity for aliphatic alkynes. For the specific case of hydrogenation of internal alkynes such as 4-octyne, very low over-hydrogenation and isomerization products were observed over a full conversion regime, even after prolonged reaction times. These catalytic properties were remarkably superior in comparison to standard catalysts. The promotio

SUBMITTER: Patarroyo J 

PROVIDER: S-EPMC6906419 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature