Facile Synthesis of Small Gold Nanoparticles Stabilized by Carbon Nanospheres for Selective Hydrogenation of 4-Nitrobenzaldehyde

2021-03-06 Hits:

Indexed by:期刊论文

Date of Publication:2021-03-06

Journal:BULLETIN OF THE KOREAN CHEMICAL SOCIETY

Volume:40

Issue:10

Page Number:997-1001

ISSN No.:1229-5949

Key Words:Au nanoparticles; Stabilization; 4-Nitrobenzaldehyde; Polymers; Selective hydrogenation

Abstract:We report the facile synthesis of small gold nanoparticles stabilized by carbon nanospheres (Au@C) for highly active and selective hydrogenation of 4-nitrobenzaldehyde. The formation of such a Au@C unique structure can be attributed to the high distribution of Au(III) species in the melamine-formaldehyde resin nanospheres, which were formed via the coordination of Au(III) with the abundant imino groups of melamine-formaldehyde pre-polymer. After the subsequent condensation and confined in situ reduction, small gold nanoparticles, and carbon nanospheres were formed simultaneously. Under the reaction conditions of 80 degrees C and 1.6 MPa, 99.3% conversion and >99% selectivity were achieved for the hydrogenation of 4-nitrobenzaldehyde to 4-aminobenzaldehyde.

Date of Publication:2021-03-06