Efficient Ethanol Dehydrogenation to Acetaldehyde and H <sub>2</sub> via Synergistic Thermocatalysis and Electrocatalysis
Abstract
Abstract The dehydrogenation of ethanol to acetaldehyde and H 2 represents an attractive synthetic route, owing to the versatile applications of acetaldehyde and the high atom economy. In this work, efficient ethanol dehydrogenation was achieved at the anode of a high‐temperature polymer electrolyte membrane electrolyzer by integrating thermocatalytic ethanol dehydrogenation (EDHR) with electrochemical hydrogen oxidation (HOR) over Ru/C and PdAu/C composite catalytic layer. The Ru/C serves as a bifunctional catalyst for the EDHR and HOR, and the PdAu/C could rapidly electrooxidize retained acetaldehyde of the catalyst layer into acetic acid, thereby effectively promoting the dehydrogenation of ethanol. Under the conditions of 200 °C and 0.6 V, this reaction enabled high production rates of acetaldehyde (1479 mmol g −1 h −1 with 99.06% selectivity) at the anode and H 2 (1728 mmol g −1 h −1 ) at the cathode, substantially outperforming traditional thermal catalytic and electrocatalytic processes. This work provides a novel strategy for efficient alcohol dehydrogenation and facilitates the sustainable synthesis of value‐added products.
Article Details
Authors (12)
Jingjing Wang
Li Wang
The Affiliated Cancer Hospital of Zhengzhou University and Henan Cancer Hospital Zhengzhou China
Zuyao Jiang
State Key Laboratory of Chemo and Biosensing College of Chemistry and Chemical Engineering International Joint Lab of Energy Electrochemistry of the Ministry of Education Hunan University Changsha 410082 China
Yabin Xu
State Key Laboratory of Chemo and Biosensing College of Chemistry and Chemical Engineering International Joint Lab of Energy Electrochemistry of the Ministry of Education Hunan University Changsha 410082 China
Qie Liu
State Key Laboratory of Chemo and Biosensing College of Chemistry and Chemical Engineering International Joint Lab of Energy Electrochemistry of the Ministry of Education Hunan University Changsha 410082 China
Miaoyu Li
Le Zhang
Tehua Wang
State Key Laboratory of Chemo and Biosensing, College of Chemistry and Chemical Engineering, Hunan University
Ru Chen
State Key Laboratory of Chemo and Biosensing, College of Chemistry and Chemical Engineering, Hunan University
Zhaoling Ma
Guangxi Key Laboratory of Low Carbon Energy Materials Guangxi New Energy Ship Battery Engineering Technology Research Center Guangxi scientific and technological achievements transformation pilot research base of electrochemical energy materials and devices School of Chemistry and Pharmaceutical Sciences Guangxi Normal University Guangxi 541004 China
Li Tao
State Key Laboratory of Chemo and Biosensing, College of Chemistry and Chemical Engineering, Hunan University
Shuangyin Wang
State Key Laboratory of Chem/Bio-Sensing and Chemometrics, College of Chemistry and Chemical Engineering