What are the factors that affect the selectivity of palladium-on-carbon catalysts?
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The palladium-carbon catalysts that we developed in the laboratory always exhibit a slightly low selectivity for the hydrogenation of dimethylamine to produce N,N-dimethylcyclohexylamine – how can this selectivity be improved? Is it in the selection of activated carbon or in the pH adjustment during palladium loading?
All of the factors you mentioned have an impact, including the palladium loading, the valence state of palladium ions or atoms, their size, and the reaction process; you need to eliminate these factors one by one from various aspects