Facile Synthesis of Ethyl-4-ethoxy Pentanoate as a Novel Biofuel Additive Derived from γ-Valerolactone,ACS Sustainable Chemistry & Engineering

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Facile Synthesis of Ethyl-4-ethoxy Pentanoate as a Novel Biofuel Additive Derived from γ-Valerolactone
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2017-06-23 00:00:00 , DOI: 10.1021/acssuschemeng.7b00891
Yun Wang ₁ , Pei Zhang ₁ , Gang Huang ₁ , Qingqing Yuan ₁ , Yejun Guan ₁ , Peng Wu ₁

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The synthesis of new biomass-derived ethers is of great interest for the development of biofuels and biofuel additives. In this study, we report the facile synthesis of a novel bioether ethyl-4-ethoxy pentanoate (EEP) from γ-valerolactone (GVL), a well-known biomass platform compound. The formation of EEP involves the etherification of ethyl-4-hydroxyl pentanoate (EHP) formed by GVL ring opening catalyzed by H-β-zeolite in ethanol. When operated at 140 °C for 2 h under autogenous pressure, the highest EEP yield of 55% was achieved at 62% GVL conversion and 89% EEP selectivity. The EEP yield was significantly improved to 86% by increasing the reaction temperature to 160 °C, where the EEP selectivity reached ∼97%. The extraordinarily high selectivity to EEP over H-β is likely correlated to its unique structure, which has strong Lewis acid sites as well as an optimal pore size.

中文翻译：

γ-戊内酯衍生的新型生物燃料添加剂－4-乙氧基戊酸乙酯的简便合成

新的生物质衍生的醚的合成对于生物燃料和生物燃料添加剂的开发非常感兴趣。在这项研究中，我们报告了从著名的生物质平台化合物γ-戊内酯（GVL）轻松合成新型生物醚-4-乙氧基戊酸酯（EEP）。EEP的形成涉及乙醇中H-β沸石催化的GVL开环而形成的4-羟基戊酸乙酯（EHP）的醚化。当在自生压力下于140°C下运行2 h时，在62％的GVL转化率和89％的EEP选择性下，EEP的最高收率为55％。通过将反应温度提高到160°C，EEP的收率显着提高到86％，EEP的选择性达到〜97％。H-β对EEP的极高选择性可能与其独特的结构有关，

更新日期：2017-06-28

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