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An unexpected behavior of H3PMo12O40 heteropolyacid catalyst on the biphasic hydrolysis of vegetable oils

机译：H 3 PMo 12 O 40 杂多酸催化剂对植物油双相水解的意外行为

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Fatty acids (FA) are key ingredients in formulating numerous high-value chemicals. In general, catalytic routes for their production require drastic conditions of pressure and temperature or homogeneous catalysts and high water consumption. The novelty of this work is to discover a versatile catalyst for hydrolysis reactions able to migrate from the aqueous phase into the oil phase throughout the process and then back to the initial phase at the end of reaction: the H3PMo12O40 heteropolyacid catalyst. We have found that variation in the pH value during the reaction promoted the conversion of PMo12O403? heteropolyanion to a PMo11O397? lacunar anion which was partially soluble in the oil layer, favouring the reaction. H3PMo12O40 was compared with other heteropolyacids and also to sulfuric acid. The effects of the main reaction variables such as temperature, water?:?oil molar ratio, concentration and type of catalyst were assessed. 1H NMR spectroscopy analysis allowed monitoring the reactions and provided fatty acid yields.
机译：脂肪酸（FA）是配制众多高价值化学品的关键成分。通常，用于其生产的催化路线需要剧烈的压力和温度条件或均相催化剂以及高水消耗。这项工作的新颖性是发现一种用于水解反应的多功能催化剂，该催化剂能够在整个过程中从水相迁移到油相，然后在反应结束时又回到初始相：H 3 PMo 12 O 40 杂多酸催化剂。我们发现反应过程中pH值的变化促进了PMo 12 O 40 3？ 杂多阴离子到PMo 11 O 39 < small> 7？ 腔隙阴离子，部分溶于油层，有利于反应。比较了H 3 PMo 12 O 40 与其他杂多酸以及硫酸。评估了主要反应变量如温度，水与油的摩尔比，催化剂的浓度和类型的影响。 1 H NMR光谱分析可以监测反应并提供脂肪酸收率。

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