METHOD FOR ENHANCING PURITY AND GRADE OF CARBOXYLIC ESTER PRODUCING CATALYST

摘要

PROBLEM TO BE SOLVED: To provide a carboxylic ester producing supported catalyst enhanced in the selectivity of carboxylic ester even under a reaction condition raised in the concn. of aldehyde and reaction temp. and reduced in the amt. of a by product derived from alcohol. SOLUTION: A palladium/lead-containing supported catalyst containing lead so that palladium/lead supporting compsn. ratio (atomic ratio) is more than 3/2.5 is treated with a lower fatty acid.