XAFS analysis for niobium carbide particle growth on silica support during preparation process

被引：8

作者：

Ichikuni, N ^{[1
]}

Sato, F ^{[1
]}

Shimazu, S ^{[1
]}

Uematsu, T ^{[1
]}

机构：

[1] Chiba Univ, Fac Engn, Dept Mat Technol, Inage Ku, Chiba 2638522, Japan

来源：

TOPICS IN CATALYSIS | 2002年 / 18卷 / 1-2期

关键词：

NbC; catalyst; EXAFS; surface carbide;

D O I：

10.1023/A:1013893230122

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

SiO2-supported NbC catalysts were prepared by using temperature-programmed reactions (TPR). XAFS analysis confirmed that Nb2O5 was reduced to NbO2 in the first TPR stage and converted into NbC in the second TPR stage. Nb particles grew only in the second TPR stage. Formation of highly dispersed NbC particles on SiO2 surfaces was achieved.

引用

页码：101 / 104

页数：4

共 13 条

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