Observed kinetics for the production of diethyl carbonate from CO₂ and ethanol catalyzed by CuNi nanoparticles supported on activated carbon.

ABSTRACT: Monometallic and bimetallic Cu:Ni catalysts with different Cu:Ni molar ratios (3:1, 2:1, 1:1, 1:2, 1:3) were synthesized by wetness impregnation on activated carbon and characterized by TPR (temperature programmed reduction), XRD (X-ray diffraction) and XPS (X-ray photoelectron spectroscopy). The synthesized catalysts were evaluated in the gas phase production of diethyl carbonate from ethanol and carbon dioxide. The largest catalytic activity was obtained over the bimetallic catalyst with a Cu:Ni molar ratio of 3:1. Its improved activity was attributed to the formation of a Cu-Ni alloy on the surface of the catalyst, evidenced by XPS and in agreement with a previous assignment based on Vegard law and TPR analysis. During the reaction rate experiments, it observed the presence of a maximum

SUBMITTER: Arbelaez Perez OF 

PROVIDER: S-EPMC11271531 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature