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Bimetallic Pt-Hg Aerogels for Electrocatalytic Upgrading of Ethanol to Acetate |
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| Authors: | Xin Zhang Tao Wang Cui Wang René Hübner Alexander Eychmüller Jinhua Zhan Bin Cai |
| Affiliation: | 1. School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100 P. R. China;2. Collaborative Innovation Center of Chemistry for Energy Materials State Key Laboratory of Physical Chemistry of Solid Surfaces Tan Kah Kee Innovation Laboratory, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005 P. R. China;3. Physical Chemistry, Technische Universität Dresden, 01069 Dresden, Germany;4. Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany |
| Abstract: | Electrochemical upgrading of ethanol to acetic acid provides a promising strategy to couple with the current hydrogen production from water electrolysis. This work reports the design of a series of bimetallic Pt Hg aerogels, where the PtHg aerogel exhibits a 10.5-times higher mass activity than that of commercial Pt/C toward ethanol oxidation. More impressively, the PtHg aerogel demonstrates nearly 100% selectivity toward the production of acetic acid. The operando infrared spectroscopic studies and nuclear magnetic resonance analysis verify the preferable C2 pathway mechanism during the reaction. This work opens an avenue for the electrochemical synthesis of acetic acid via ethanol electrolysis. |
| Keywords: | electrocatalysis ethanol oxidation metallic aerogels platinum-mercury alloys selectivity |