@article{ART001353413},
author={Jeong-Gil Choi},
title={Preparation and characterization of niobium carbide crystallites},
journal={Journal of the Korean Crystal Growth and Crystal Technology},
issn={1225-1429},
year={2009},
volume={19},
number={3},
pages={125-129}
TY - JOUR
AU - Jeong-Gil Choi
TI - Preparation and characterization of niobium carbide crystallites
JO - Journal of the Korean Crystal Growth and Crystal Technology
PY - 2009
VL - 19
IS - 3
PB - The Korea Association Of Crystal Growth, Inc.
SP - 125
EP - 129
SN - 1225-1429
AB - The preparation and characterization of niobium carbide crystallites were investigated in this study, and in particular, the effect of preparation conditions were studied on the synthesis of niobium carbides crystallites. For this purpose, various characterization techniques including x-ray diffraction, BET surface area, and oxygen uptake measurements were employed to characterize the synthesized niobium carbide crystallites. The niobium carbide crystallites were prepared using niobium oxide and methane gas or methane-hydrogen mixture. Using x-ray diffraction a lattice parameter of 4.45 Å
and a crystallite size ranging from 52 Å to 580 Å was found. BET surface areas ranged from 3.2 m2/g to 16.6 m2/g and oxygen uptake values varied from 0.5 μmol/g to 6.1 μmol/g. It was observed that niobium carbide crystallites were active for ammonia decomposition reaction. While the BET surface area increased with increasing the oxygen uptake, the conversion of ammonia decomposition reaction decreased. These results indicated that the ammonia decomposition over these materials was considered to be structure-sensitive.
KW - Niobium carbide crystallites;BET surface area;Oxygen uptake;Ammonia decomposition reaction
DO -
UR -
ER -
Jeong-Gil Choi. (2009). Preparation and characterization of niobium carbide crystallites. Journal of the Korean Crystal Growth and Crystal Technology, 19(3), 125-129.
Jeong-Gil Choi. 2009, "Preparation and characterization of niobium carbide crystallites", Journal of the Korean Crystal Growth and Crystal Technology, vol.19, no.3 pp.125-129.
Jeong-Gil Choi "Preparation and characterization of niobium carbide crystallites" Journal of the Korean Crystal Growth and Crystal Technology 19.3 pp.125-129 (2009) : 125.
Jeong-Gil Choi. Preparation and characterization of niobium carbide crystallites. 2009; 19(3), 125-129.
Jeong-Gil Choi. "Preparation and characterization of niobium carbide crystallites" Journal of the Korean Crystal Growth and Crystal Technology 19, no.3 (2009) : 125-129.
Jeong-Gil Choi. Preparation and characterization of niobium carbide crystallites. Journal of the Korean Crystal Growth and Crystal Technology, 19(3), 125-129.
Jeong-Gil Choi. Preparation and characterization of niobium carbide crystallites. Journal of the Korean Crystal Growth and Crystal Technology. 2009; 19(3) 125-129.
Jeong-Gil Choi. Preparation and characterization of niobium carbide crystallites. 2009; 19(3), 125-129.
Jeong-Gil Choi. "Preparation and characterization of niobium carbide crystallites" Journal of the Korean Crystal Growth and Crystal Technology 19, no.3 (2009) : 125-129.
