| 摘要 |
PROBLEM TO BE SOLVED: To provide an improved process for converting an alkane to an unsaturated carboxylic acid. SOLUTION: The process, for producing an unsaturated carboxylic acid product by selective partial oxidation of the alkane, comprises a step of forming a product containing at least one unsaturated carboxylic acid and a saturated carboxylic acid of certain concentration by reacting the alkane with oxygen or an oxygen-containing gas in the presence of a catalyst, and a step of decreasing the impurity concentration of the saturated carboxylic acid by lowering the partial oxidation reaction selectivity toward the saturated carboxylic acid or by destroying or converting or separating at least a part of the saturated carboxylic acid. COPYRIGHT: (C)2008,JPO&INPIT
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