Sample controlled thermal analysis - Temperature programmed reduction of bulk and supported copper oxide

被引：8

作者：

Barnes, PA ^{[1
]}

Tiernan, MJ ^{[1
]}

Parkes, GMB ^{[1
]}

机构：

[1] Univ Huddersfield, Mat Res Div, Ctr Appl Catalysis, Huddersfield HD1 3DH, W Yorkshire, England

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 1999年 / 56卷 / 02期

关键词：

catalysis; constant rate thermal analysis (CRTA); copper oxide; temperature programmed reduction (TPR);

D O I：

10.1023/A:1010197904692

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The reduction of bulk and supported copper oxide was investigated using Constant Rate-Temperature Programmed Reduction (CR-TPR) and conventional linear heating rate TPR. Linear hearing profiles indicated that the reduction of supported samples was more facile than that of the bulk oxide. CRTA results revealed that both supported and bulk oxide samples were reduced via a mechanism involving a nucleation step and/or auto-catalysis. The increased reducibility of the supported samples is attributed to a higher dispersion which provides a larger reactive surface area and a high concentration of defects at which reduction is initiated.

引用

页码：733 / 737

页数：5

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