Formation Pathway of By-products in Methacrolein Oxidation over H<sub>3</sub>PMo<sub>12</sub>O<sub>40</sub> Investigated by Using <sup>13</sup>C-Labeled Methacrolein

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  • <sup>13</sup>C標識メタクロレインを用いたH<sub>3</sub>PMo<sub>12</sub>O<sub>40</sub>上でのメタクロレイン酸化反応における副反応経路の解析

Abstract

<p>Understanding the mechanism for the formations of by-products as well as a main product can give us useful information for improvement in the catalytic performances. In the present study, formation pathway of by-products in oxidation of methacrolein (MAL) was investigated by using MAL with 13C-labeled methyl group as a reactant. The reaction pathway for the formation of the by-products was proposed based on GC-MS analysis as follows: The first step is oxidative cleavage of C=C double bond in MAL, giving pyruvaldehyde, and pyruvaldehyde is subsequently hydrolyzed to acetic acid.</p>

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