Solid-state chemistry route for supported tungsten and tungsten carbide nanoparticles

被引：10

作者：

Hugot, N. ^{[1
]}

Desforges, A. ^{[1
]}

Fontana, S. ^{[1
]}

Mareche, J. F. ^{[1
]}

Herold, C. ^{[1
]}

Albiniak, A. ^{[2
]}

Furdin, G. ^{[1
]}

机构：

[1] Univ Lorraine, Fac Sci & Technol, Dept CP2S, Inst Jean Lamour,UMR 7198,CNRS, F-54506 Vandoeuvre Les Nancy, France

[2] Wroclaw Univ Technol, Fac Chem, PL-50344 Wroclaw, Poland

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2012年 / 194卷

关键词：

Tungsten carbide; Gas solid reactions; Vapor deposition; X-ray diffraction; Transmission; Electron microscopy; TEMPERATURE FUEL-CELLS; CHEMICAL-VAPOR CONDENSATION; EXPANDED GRAPHITE; TERNARY CATALYSTS; SURFACE-AREA; CARBON; MOLYBDENUM; PLATINUM; OXYGEN; REDUCTION;

D O I：

10.1016/j.jssc.2012.07.027

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Nanoparticles of tungsten and tungsten carbide have been prepared using solid-state chemistry methods. After the vapor phase impregnation of a tungsten hexachloride precursor on a carbon support, a temperature-programmed reduction/carburization was performed. Several parameters were investigated and the evolution of obtained samples was followed by XRD and TEM. The optimization of the reaction parameters led to the preparation of W, W2C and WC particles well dispersed on the support. WC phase however could not be obtained alone with less than 10 nm mean size. This could be explained by the carburization mechanism and the carbon diffusion on the support. (C) 2012 Elsevier Inc. All rights reserved.

引用

页码：23 / 31

页数：9

共 30 条

[1] Tungsten catalysts supported on activated carbon -: I.: Preparation and characterization after their heat treatments in inert atmosphere [J].