Patent ID: 8581003

Claim:
A process for producing an aliphatic carboxylic acid amide, comprising the step of reacting an aliphatic carboxylic acid or an alkyl ester thereof containing an alkyl group having 1 to 4 carbon atoms with a mono- or dialkylamine containing an alkyl group or groups having 1 to 4 carbon atoms in the presence of a solid acid catalyst comprising titanium oxide as a main component, and an oxide or oxides of at least one element selected from the group consisting of elements (except titanium) belonging to Groups 4, 5 and 14 of the long form of the periodic table, said catalyst having an average particle diameter of 2 μm or more; wherein a content of the titanium oxide in the solid acid catalyst is not less than 30% by mass in terms of metallic titanium; and wherein a proportion of the at least one element selected from the group consisting of elements (except titanium) belonging to Groups 4, 5 and 14 of the long form of the periodic table relative to the titanium is from 0.005 to 0.412 in terms of mass ratio.