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Electrocatalytic Oxidation of Glycerol Using Solid‐State Synthesised Nickel Boride: Impact of Key Electrolysis Parameters on Product Selectivity
Author(s) -
Brix Ann Cathrin,
Morales Dulce M.,
Braun Michael,
Jambrec Daliborka,
Junqueira João R. C.,
Cychy Steffen,
Seisel Sabine,
Masa Justus,
Muhler Martin,
Andronescu Corina,
Schuhmann Wolfgang
Publication year - 2021
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.202100739
Subject(s) - chronoamperometry , electrolysis , chemical engineering , materials science , nickel , electrolyte , oxygen evolution , catalysis , hydrogen production , chemistry , boride , inorganic chemistry , metallurgy , cyclic voltammetry , electrochemistry , electrode , organic chemistry , engineering
Water electrolysis is a promising technology for sustainable hydrogen production; however, its commercialisation is limited by sluggish kinetics of the oxygen evolution reaction (OER). A potential alternative to the OER is hence required and is seen in the electrocatalytic glycerol oxidation reaction (GOR) as it offers concomitant value‐added product generation from a cheap and abundant feedstock. Here, we show a facile solid‐state synthesis method to obtain Ni‐boride, a non‐noble metal‐based catalyst subsequently used in an in‐depth study of the GOR product distribution as a function of key electrolysis parameters. Highly crystalline, mixed‐phase Ni borides were obtained, and their synthesis was successfully optimised regarding GOR activity. Long‐term chronoamperometry was conducted in a circular flow‐through cell and samples were analysed by HPLC. It is shown that the formation of lactic acid, one of the most valuable GOR products, can be enhanced by optimising the electrolyte composition and the applied potential.