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论文类型：期刊论文

发表时间：2019-04-01

发表刊物：CATALYSTS

收录刊物：SCIE

卷号：9

期号：4

ISSN号：2073-4344

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

摘要：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.