摘要
本文用透射电子显微及衍射技术对比研究了铁铬系中变催化剂(FeCrK)和 BX 型中变催化剂(FeCrCeK)的晶型,发现经稀土调变后的催化剂其晶型主体为 r—Fe_2O_3,而未经稀土调变的铁铬系催化剂晶型主体为α—Fe_2O_3。主体晶型为γ—Fe_2O_3的催化剂比表面积。
Crystalline phases of the rare-earth promoted catalyst for high- temperature water-gas shift reactions have been investigated by means of transmission electron microscopy(TEM).Results show that the rare- earth promoted catalyst with r-Fe_O_3 as the main phase displays greater catalytic activity than the Fe-Cr catalyst.
基金
国家自然科学基金资助课题
关键词
稀土催化剂
晶型
铁铬系催化剂
rare-earth catalyst
water-gas shift reaction
crystalline phase
TEM
