Entrapment of metallic palladium and a rhodium(I) complex in a silica sol–gel matrix

Autor: Raed Abu-Reziq, Herbert Schumann, Irena Miloslavski, Jochanan Blum, David Avnir
Rok vydání: 2002
Předmět:
Zdroj: Journal of Molecular Catalysis A: Chemical. 185:179-185
ISSN: 1381-1169
DOI: 10.1016/s1381-1169(02)00012-2
Popis: A combined palladium–rhodium catalyst, generated by silica sol–gel-co-entrapment of metallic palladium and [Rh(cod) (-Cl)]2, catalyzes under ambient conditions the hydrogenation of toluene and other simple benzene derivatives. The catalyst is perfectly recyclable and promotes at 80 ◦ C and 400 psi, also the hydrogenation of polycyclic and sterically hindered arenes that are capable of penetrating the matrix pores. A synergistic effect is assumed to exist between the two metals, as either of the entrapped metallic components is a less active catalyst than the combination of both. © 2002 Elsevier Science B.V. All rights reserved.
Databáze: OpenAIRE