Indexed by:期刊论文

Date of Publication:2019-04-01

Journal:CATALYSTS

Included Journals:SCIE

Volume:9

Issue:4

ISSN No.:2073-4344

Key Words:Pt nano-catalyst; Schiff-base; aromatic azo compounds (Aazo); nitroaromatic hydrogenation

Abstract:A Schiff-base modified Pt nano-catalyst was prepared via one-pot aldimine condensation and then impregnation-reduction of a platinum precursor, in which the Pt nanoparticles (NPs) with an average size of 2.3 nm were highly dispersed on the support. The as-prepared catalyst exhibited excellent activity and selectivity in the hydrogenation coupling synthesis of aromatic azo compounds from nitroaromatic under mild conditions. The strong metal-support interaction derived from the coordination of nitrogen sites on Schiff-base to Pt NPs enables stabilizing the Pt NPs and achieving the catalytic recyclability. The scheme can also tolerate various functional groups and offer an efficient method for the green synthesis of aromatic azo compounds.