High Surface Area Tungsten Carbides: Synthesis, Characterization and Catalytic Activity towards the Hydrogen Evolution Reaction in Phosphoric Acid at Elevated Temperatures

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@article{e699a24ddd824c96b706023a887a4e72,
title = "High Surface Area Tungsten Carbides: Synthesis, Characterization and Catalytic Activity towards the Hydrogen Evolution Reaction in Phosphoric Acid at Elevated Temperatures",
abstract = "Tungsten carbide powders were synthesized as a potential electrocatalyst for the hydrogen evolution reaction in phosphoric acid at elevated temperatures. With ammonium metatungstate as the precursor, two synthetic routes with and without carbon templates were investigated. Through the intermediate nitride route and with carbon black as template, the obtained tungsten carbide samples had higher BET area. In 100{\%} H3PO4 at temperatures up to 185°C, the carbide powders showed superior activity towards the hydrogen evolution reaction. A deviation was found in the correlation between the BET area and catalytic activity; this was attributed to the presence of excess amorphous carbon in the carbide powder. TEM imaging and TGA-DTA results revealed a better correlation of the activity with the carbide particle size.",
keywords = "Tungsten carbide, Synthesis, Hydrogen evolution reaction, Phosphoric acid",
author = "{Tom{\'a}s Garc{\'i}a}, {Antonio Luis} and Qingfeng Li and Jensen, {Jens Oluf} and Bjerrum, {Niels J.}",
note = "This work has received financial support from the Danish National Research Foundation (the PROCON Center) and the Danish ForskEL programme (Catbooster)",
year = "2014",
language = "English",
volume = "9",
pages = "1016--1032",
journal = "International Journal of Electrochemical Science",
issn = "1452-3981",
publisher = "Electrochemical Science Group",

}

RIS

TY - JOUR

T1 - High Surface Area Tungsten Carbides: Synthesis, Characterization and Catalytic Activity towards the Hydrogen Evolution Reaction in Phosphoric Acid at Elevated Temperatures

AU - Tomás García, Antonio Luis

AU - Li, Qingfeng

AU - Jensen, Jens Oluf

AU - Bjerrum, Niels J.

N1 - This work has received financial support from the Danish National Research Foundation (the PROCON Center) and the Danish ForskEL programme (Catbooster)

PY - 2014

Y1 - 2014

N2 - Tungsten carbide powders were synthesized as a potential electrocatalyst for the hydrogen evolution reaction in phosphoric acid at elevated temperatures. With ammonium metatungstate as the precursor, two synthetic routes with and without carbon templates were investigated. Through the intermediate nitride route and with carbon black as template, the obtained tungsten carbide samples had higher BET area. In 100% H3PO4 at temperatures up to 185°C, the carbide powders showed superior activity towards the hydrogen evolution reaction. A deviation was found in the correlation between the BET area and catalytic activity; this was attributed to the presence of excess amorphous carbon in the carbide powder. TEM imaging and TGA-DTA results revealed a better correlation of the activity with the carbide particle size.

AB - Tungsten carbide powders were synthesized as a potential electrocatalyst for the hydrogen evolution reaction in phosphoric acid at elevated temperatures. With ammonium metatungstate as the precursor, two synthetic routes with and without carbon templates were investigated. Through the intermediate nitride route and with carbon black as template, the obtained tungsten carbide samples had higher BET area. In 100% H3PO4 at temperatures up to 185°C, the carbide powders showed superior activity towards the hydrogen evolution reaction. A deviation was found in the correlation between the BET area and catalytic activity; this was attributed to the presence of excess amorphous carbon in the carbide powder. TEM imaging and TGA-DTA results revealed a better correlation of the activity with the carbide particle size.

KW - Tungsten carbide

KW - Synthesis

KW - Hydrogen evolution reaction

KW - Phosphoric acid

M3 - Journal article

VL - 9

SP - 1016

EP - 1032

JO - International Journal of Electrochemical Science

JF - International Journal of Electrochemical Science

SN - 1452-3981

ER -