In situ XAFS spectroscopic studies of direct coal liquefaction catalysts

被引：16
|
作者：
Shah, N
Zhao, JM
Huggins, FE
Huffman, GP
机构：
[1] Consortium Fossil Fuel L., University of Kentucky, 341 Bowman Hall, Lexington
来源：
ENERGY & FUELS | 1996年 / 10卷 / 02期
关键词：
D O I：
10.1021/ef950157q
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
An in situ cell capable of withstanding typical coal liquefaction reaction conditions was designed and built for XAFS investigations. Three different Fe-based catalysts for direct coal liquefaction were studied at the reaction conditions of 1000 psig (cold) hydrogen pressure and up to 500 degrees C temperature, Both near-edge (XANES) and radial structure function (EXAFS) data showed gradual conversion from iron oxyhydroxide to pyrrhotite. The starting temperature and the temperature range over which such transformations occur vary significantly with the catalyst system being investigated.
引用
收藏
页码：417 / 420
页数：4
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