- 作者: 陳鴻博 ; 廖代偉 ; 于腊佳 ; 易軍 ; 張鴻斌 ; 蔡啟瑞
- 作者服務機構: Inst. of Physical Chemistry, Xiamen Univ., Xiamen, China
- 中文摘要: The effects of M/sub 2/O/sub 3/ (M = Al, Sc etc.) in Cu-ZnO-M/sub 2/O/sub 3/ catalysts on methanol synthesis at low pressure were studied with ESR, XPS and TPR spectroscopy. The results of ESR showed that the generation of monovalent cationic defects was because the valence state and electronic charge on the ZnO lattice lost their balance as M/sup 3+/ doped into ZnO. The induced effect by Sc/sup 3+/ is stronger than that by Al/sup 3+/. The results of XPS and TPR indicated that the amount and stabilization of Cu/sup +/ on the surface of reduced copper-based catalyst and its catalytic activity were affected by the monovalent cationic defects on the surface of ZnO.
- 英文摘要: --
- 中文關鍵字: Copper (Cu); Zinc (Zn); Aluminum (Al); Scandium; Catalysis; Xps; Epr
- 英文關鍵字: 銅;鋅;鋁;;催化;X射線光電子儀;電子自旋共振