Upgrading of Ethanol to 1,1-Diethoxyethane by Proton-Exchange Membrane Electrolysis

被引：15

作者：

Kawaguchi, Daisuke ^{[1
]}

Ogihara, Hitoshi ^{[1
]}

Kurokawa, Hideki ^{[1
]}

机构：

[1] Saitama Univ, Grad Sch Sci & Engn, Sakura Ku, 255 Shimo Okubo, Saitama 3388570, Japan

来源：

CHEMSUSCHEM | 2021年 / 14卷 / 20期

关键词：

HYDROGEN-PRODUCTION; SELECTIVE OXIDATION; DIRECT CONVERSION; NANOSHEETS; CELL; ACETALDEHYDE; EVOLUTION; PRODUCT; TOLUENE; WATER;

D O I：

10.1002/cssc.202101188

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The direct acetalization of ethanol is a significant challenge for upgrading bioethanol to value-added chemicals. In this study, 1,1-diethoxyethane (DEE) is selectively synthesized by the electrolysis of ethanol using a proton-exchange membrane (PEM) reactor. In the PEM reactor, a Pt/C catalyst promoted the electro-oxidation of ethanol to acetaldehyde. The Nafion membrane used as the PEM served as a solid acid catalyst for the acetalization of ethanol and electrochemically formed acetaldehyde. DEE was obtained at high faradaic efficiency (78 %) through sequential electrochemical and nonelectrochemical reactions. The DEE formation rate through PEM electrolysis was higher than that of reported systems. At the cathode, protons extracted from ethanol were reduced to H-2. The electrochemical approach can be utilized as a sustainable process for upgrading bioethanol to chemicals because it can use renewable electricity and does not require chemical reagents (e. g., oxidants and electrolytes).

引用

页码：4431 / 4438

页数：8

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