Abstract
Doping copper in Pd/NaY catalyst has been developed for vapor-phase carbonylation of methyl nitrite (MN) to dimethyl carbonate (DMC). Different characterization methods were employed to investigate the role of Cu in the catalyst. The introduction of Cu2+ could effectively promote the dispersion of Pd species by shrinking the size of Pd species NPs, while the oxidation state of Pd could be maintained simultaneously for better selectivity. Furthermore, the strength of Pd-CO can be tuned by the amount of Cu, which is the most crucial problem towards the reaction cycle.
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