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http://dx.doi.org/10.7316/KHNES.2019.30.1.1

Hydrogen Production from Ammonia Decomposition over Transition Metal Carbides  

CHOI, EUI-JI (Department of Chemical Engineering, Hannam University)
CHOI, JEONG-GIL (Department of Chemical Engineering, Hannam University)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.30, no.1, 2019 , pp. 1-7 More about this Journal
Abstract
The preparation and catalytic activities of various transition metal carbide crystallites (VC, MoC, WC) were examined in this study. In particular, the effect of different kinds of transition metal crystallites were scrutinized on the ammonia decomposition reaction. The experimental results showed that BET surface areas ranged from $8.3m^2/g$ to $36.3m^2/g$ and oxygen uptake values varied from $9.1{\mu}mol/g$ to $25.4{\mu}mol/g$. Amongst prepared transition metal carbide crystallites, tungsten compounds (WC) were observed to be most active for ammonia decomposition reaction. The main reason for these results were considered to be related to the extent of electronegativity between these materials. Most of transition metal carbide crystallites were exceeded by Pt/C crystallite. However, the steady state reactivities for some of transition metal carbide crystallites (WC) were comparable to or even higher than that determined for the Pt/C crystallite.
Keywords
Transition metal carbide crystallites; BET surface area; Oxygen uptake; Ammonia decomposition reactivity; Hydrogen production;
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