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Abstract

A method of screening catalysts for liquid-phase selective hydrogenation by preparing a test catalyst by adding a promoter to a reference catalyst; preparing a liquid reactant stream comprising C₂H₂ dissolved in n-methyl-2-pyrrolidone; testing the test and reference catalysts by contacting the reactant stream and gas mixture comprising hydrogen and carbon monoxide in continuous flow with the test catalyst and reference catalyst, respectively, at selective hydrogenation reaction conditions to produce a product stream, condensing substantially all of the n-methyl-2-pyrrolidone from the product stream; measuring the concentrations of products comprising C₂H₂, C₂H₄, and C₂H₆ in the product stream at steady state; determining performance parameters for the test catalyst and the reference catalyst comprising the respective C₂H₂ conversion S_c and C₂H₄ selectivity relative to C₂H₆ S_s; and comparing the test catalyst performance parameters to those for the reference catalyst.

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