Release Time:2019-11-07  Hits:

Indexed by: Journal Papers

Date of Publication: 2019-10-01

Journal: BULLETIN OF THE KOREAN CHEMICAL SOCIETY

Included Journals: SCIE、EI

Volume: 40

Issue: 10

Page Number: 997-1001

ISSN: 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.