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首页> 外文期刊>New Journal of Chemistry >Unraveling the role of the lacunar Na7PW11O39 catalyst in the oxidation of terpene alcohols with hydrogen peroxide at room temperature
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Unraveling the role of the lacunar Na7PW11O39 catalyst in the oxidation of terpene alcohols with hydrogen peroxide at room temperature

机译：在室温下通过过氧化氢氧化在萜烯醇氧化在萜烯醇中的作用，揭开了LEGUNAR NA7PW11O39催化剂的作用

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摘要

In this work, we have assessed the activity of various Keggin heteropolyacid (HPA) salts in a new one-pot synthesis route of valuable products, which were obtained from the oxidation of terpenic alcohols (i.e., aldehyde, epoxide, and diepoxide), using a green oxidant (i.e., hydrogen peroxide) at mild conditions (i.e., room temperature). Lacunar Keggin HPA sodium salts were the goal catalysts investigated in this reaction. Starting from the HPAs (H3PW12O40, H3PMo12O40, and H4SiW12O40), we synthesized lacunar sodium salts (Na7PW11O39, Na7PW11O39 and Na8SiW11O39) and a saturated salt (Na3PW12O40). All of them were investigated in oxidation reactions in a homogeneous phase with nerol as a model molecule. Na7PW11O39 was the most active and selective towards the oxidation products. All the catalysts were characterized by FT-IR, TG/DSC, BET, XRD, and SEM-EDS analyses and potentiometric titration. The main reaction parameters were assessed. Geraniol, alpha-terpineol, beta-citronellol and borneol were also successfully oxidized. Special attention was dedicated to correlating the composition and properties of the catalysts with their activity.
机译：在这项工作中，我们评估了各种Keggin杂酸（HPA）盐的有价值产品的新的kegin杂酸（HPA）盐的活性，所述有价值产品的氧化醇（即醛，环氧化物和二根氧化物）获得，使用温和条件下的绿色氧化剂（即，过氧化氢）（即室温）。 Levunar Keggin HPA钠盐是在该反应中研究的目标催化剂。从HPA开始（H3PW12O40，H3PMO12O40和H4SIW12O40），我们合成了LECUNAR钠盐（NA7PW11O39，NA7PW11O39和NA8SIW11O39）和饱和盐（NA3PW12O40）。将所有它们在均匀相中研究了均匀相中的氧化反应作为模型分子。 Na7PW11O39是氧化产品中最活跃和选择性的。所有催化剂的特征在于FT-IR，Tg / DSC，BET，XRD和SEM-EDS分析和电位滴定。评估主要反应参数。 Geraniol，α-萜品醇，β-柑橘醇和冰片也成功氧化。特别注意致力于将催化剂的组成和性质与其活性相关联。

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