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볼밀링한 WO<sub>3</sub>-CuO 나노복합분말의 조성에 따른 수소환원 거동
정성수,강윤성,이재성,Jung Sung-Soo,Kang Yun-Sung,Lee Jai-Sung 한국분말야금학회 2006 한국분말재료학회지 (KPMI) Vol.13 No.3
The effect of Cu content on hydrogen reduction behavior of ball-milled $WO_3$-CuO nanocomposite powders was investigated. Hydrogen reduction behavior and reduction percent(${\alpha}$) of nanopowders were characterized by thermogravimetry (TG) and hygrometry measurements. Activation energy for hydrogen reduction of $WO_3$ nanopowders with different Cu content was calculated at each heating rate and reduction percent(${\alpha}$). The activation energy for reduction of $WO_3$ obtained in this study existed in the ranging from 129 to 139 kJ/mol, which was in accordance with the activation energy for $WO_3$ powder reduction of conventional micron-sized.