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Updated: Feb 25, 2026

Chemical Precipitation Method for the Synthesis of Nb2O5 Modified Bulk Nickel Catalysts with High Specific Surface Area
Published on: February 19, 2018
Selective Electrosynthesis of a Nylon-6 Precursor via Facet-Promoted NO*-to-NHO* Conversion
Xinyu Liu1, Rong Yang1, Bin Zhang1
1Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China.
Abstract:
The electrosynthesis of cyclohexanone oxime (CHO) from NO is significant but suffers from low Faradaic efficiency (FE) due to the severe competitive NO*-NO* coupling at high NO concentrations. Here, a facet-regulation strategy is proposed to accelerate the NO hydrogenation process and inhibit NO*-NO* coupling. As a result, the Ag nanocubes with {100} surfaces exhibit an 86.5% FE, a 4.45 mmol h-1 cm-2 yield rate, and a 358 mA cm-2 CHO partial current density, outperforming Ag nanohexahedrons with exposed {111} surfaces. Experimental and theoretical research has shown that stronger NO and H2O adsorption and lower thermodynamic and kinetic barriers of hydrogenation of NO* to NHO* over the {100} surface promote hydrogenation of NO* to NHO*, the key step that determines the CHO or NO*-NO* coupling products. Thus, NO*-NO* coupling is restrained, and a high CHO FE is achieved on Ag with a {100} surface.
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