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The performance of CuCl2/Al2O3 with and without La and K promoters, designated as Cu, K0.23Cu0.77, K0.29Cu0.71, La0.29Cu0.71 and K0.21La0.08Cu0.71 was studied in the ethylene oxychlorination at 503K and 1atm by in-situ UV–vis-spectroscopic kinetic study through a two-step approach. The effects of the dopants on the oxychlorination reaction were firstly deconvoluted to their influence on the Cu2+ reduction...
Obtaining the comprehensive kinetics of elementary reaction steps in catalytic redox cycles remains a challenge. We report here an operando study by combined mass and UV–vis–NIR spectrometry to obtain kinetic data for reduction and oxidation steps in the catalytic cycle of ethylene oxychlorination on potassium-promoted CuCl2/Al2O3 catalysts and understand the catalytic consequences of potassium promotion...
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