The catalytic converter for unsaturated carboxylic acid synthesis, the production manner, and production mannered null expression of the unsaturated carboxylic acid which uses

摘要

PROBLEM TO BE SOLVED: To provide a catalyst with high yield of unsaturated carboxylic acid used when unsaturated aldehyde is catalytically oxidated with molecular oxygen in a vapor phase to synthesize unsaturated carboxylic acid, and a method for manufacturing the same.;SOLUTION: The method is provided for manufacturing a catalyst for synthesizing unsaturated carboxylic acid when unsaturated aldehyde is catalytically oxidated with molecular oxygen in a vapor phase to synthesize unsaturated carboxylic acid, wherein the solution is sintered at the maximum temperature of 300°C or more and 700°C or less while circulating the gas of 1.5 l/h or more and 4.0 l/h or less per 1 g of a catalyst precursor containing ammonium radicals or a nitrogen-containing organic compound.;COPYRIGHT: (C)2009,JPO&INPIT