引用本文:
胡瑞生, 沈岳年, 孔繁清. 焙烧温度对La2O3-NiO体系结构和导电性及某些催化性能的影响[J]. 应用化学,
1998, 15(4): 80-82.
Citation: Hu Ruisheng, Shen Yuenian, Kong Fanqing. The Effects of Calcination Temperature on the Structure, Conductivity and Catalytic Activities of La2O3-NiO System[J]. Chinese Journal of Applied Chemistry, 1998, 15(4): 80-82.
Citation: Hu Ruisheng, Shen Yuenian, Kong Fanqing. The Effects of Calcination Temperature on the Structure, Conductivity and Catalytic Activities of La2O3-NiO System[J]. Chinese Journal of Applied Chemistry, 1998, 15(4): 80-82.
焙烧温度对La2O3-NiO体系结构和导电性及某些催化性能的影响
English
The Effects of Calcination Temperature on the Structure, Conductivity and Catalytic Activities of La2O3-NiO System
Abstract:
The phase structure of La2O3-NiO system at various calcination temperatures have been studied by XRD and DTA-TG techniques. It is found that at 450-600℃ there are mixed phases of La2O3 and NiO and at 800~900℃ only a single phase of perovskite LaNiO3. The conductivity of the system increases with the increase in calcination temperature. At temperature 600~800℃ a sudden change of the conductivity occurred in correspondence with the phase transformation of the system. The catalytic activities of the system calcinated at 600℃ and 800℃ also show a distinct "activity gap" for CO methanation and xylene combustion.
-
Key words:
- La2O3-NiO
- / calcination temperature
- / conductivity
- / catalytic activity
-
-
扫一扫看文章
计量
- PDF下载量: 0
- 文章访问数: 697
- HTML全文浏览量: 46
下载:
