Rare-Earth Supported Nickel Catalysts for Alkyne Semihydrogenation: Chemo- and Regioselectivity Impacted by the Lewis Acidity and Size of the Support
作者:Bianca L. Ramirez、Connie C. Lu
DOI:10.1021/jacs.0c00905
日期:2020.3.18
iInitial rate studies were performed on the two tandem catalytic reactions separately: DPA hydrogenation and (Z)-stilbene isomerization. The catalytic activity in DPA hydrogenation follows the order: Ni-Ga > Ni-La > Ni-Y > Ni-Lu > Ni-Sc. By comparison, tThe ranking of catalysts by (Z)-stilbene isomerization initial rates is: Ni-Ga >> Ni-Sc > Ni-Lu > Ni-Y > Ni-La. In operando 31P and 1HNMRstudies revealed