Effects of experimental conditions on synthesis of titanium carbide crystallites

Jeong-Gil Choi (최정길)

Effects of experimental conditions on synthesis of titanium carbide crystallites

Journal of the Korean Crystal Growth and Crystal Technology
Abbr : J. Korean Cryst. Growth Cryst. Technol.
2010, 20(2), pp.80-84
Publisher : The Korea Association Of Crystal Growth, Inc.
Research Area : Engineering > Materials Science and Engineering

Jeong-Gil Choi ¹

¹한남대학교

Accredited

ABSTRACT

The temperature-programmed reduction of titanium oxide (TiO2) with pure CH4 was used for the preparation of titanium carbide crystallites. The synthesized materials had the different surface areas, indicating that the structural properties of these materials were strong functions of two different heating rates and space velocity employed. The titanium carbide crystallites were active for NH3 decomposition. Since the reactivity varied with changes in the particle size,ammonia decomposition reactivity over the titanium carbides crystallites appeared to be related to the different active species. The reactivities of titanium carbide crystallites were two and three times lower than those of the vanadium and molybdenum carbide crystallites, respectively. These results suggested that the difference in activities might be related to the degree of electron transfer between metals and carbon.

KEYWORDS

Titanium carbide crystallites, BET surface area, Oxygen uptake, Reactivity for ammonia decomposition

Citation status

* References for papers published after 2023 are currently being built.

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Journal of the Korean Crystal Growth and Crystal Technology 2023 KCI Impact Factor : 0.19