Method for producing adipic acid
AssigneeToray Industries, Inc.
InventorsDaijiro TSUKAMOTO, Kenji KAWAMURA, Katsushige YAMADA, Masato AKAHIRA, Daisuke YAMAMOTO
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Abstract
The present invention relates to a method of producing adipic acid, including a step (hydrogenation step) of reacting 3-hydroxyadipic acid-3,6-lactone with hydrogen in an aqueous solvent in a presence of a hydrogenation catalyst. The hydrogenation catalyst preferably includes one kind or two or more kinds of transition metal elements selected from the group consisting of palladium, platinum, ruthenium, rhodium, rhenium, nickel, cobalt, iron, iridium, osmium, copper, and chromium.
Claims8
A method of producing adipic acid, comprising a step (hydrogenation step) of reacting 3-hydroxyadipic acid-3,6-lactone with hydrogen in an aqueous solvent in a presence of a hydrogenation catalyst.
An aqueous adipic acid solution, having a content of n-valeric acid of from 0.01 to 20 parts by weight, relative to 100 parts by weight of adipic acid.
Dependencies are inferred from the claim text.