期刊
CHEMICAL PHYSICS LETTERS
卷 417, 期 1-3, 页码 137-142出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2005.09.112
关键词
-
The aim of the Letter is to elucidate the nature of metal-support interaction in the 2 wt% Rh/Al2O3 catalyst obtained by annealing Rh-O-Al xerogel at 1113 K in air. XPS, HRTEM, and XRD results reveal that during the Rh-O-Al xerogel annealing in air, rhodium incorporates into forming alumina, which results mostly in Rh4+/delta-Al2O3 solid solution formation. However, in the course of the catalyst reduction at 773 with H-2 and at 823 K with CH4 the Rh4+/delta-Al2O3 solid solution transforms into Rh-Al alloy. The islands of rhodium form oil the Surface of the Rh-Al alloy nanocrystallites if the reduction is slow enough. (c) 2005 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据