Growth of copper particles in a Cu/ZnO methanol catalyst

被引：8

作者：

Carroll, MC

Skrotzki, B

Kurtz, M

Muhler, M

Eggeler, G

机构：

[1] Ruhr Univ Bochum, Inst Werkstoffe, Lehrstuhl Werkstoffwissensch, D-44780 Bochum, Germany

[2] Ruhr Univ Bochum, Inst Chem Tech, D-44780 Bochum, Germany

来源：

SCRIPTA MATERIALIA | 2003年 / 49卷 / 06期

关键词：

copper; scanning/transmission electron microscopy (STEM); coarsening; high-angle annular dark field imaging (HAADF); catalysis;

D O I：

10.1016/S1359-6462(03)00362-2

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The growth and coarsening of copper particles in a Cu/ZnO catalyst powder is evaluated through transmission electron microscopy and associated composition maps. The observed growth rate of discrete copper particles on the zinc oxide support structure follows a parabolic shape, with measured particle diameter d proportional to t((1/2)). (C) 2003 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：527 / 532

页数：6

共 12 条

[1] DIFFUSION-LIMITED PHASE TRANSFORMATIONS - A COMPARISON AND CRITICAL EVALUATION OF MATHEMATICAL APPROXIMATIONS [J].

AARON, HB ;

FAINSTEIN, D ;

KOTLER, GR .

JOURNAL OF APPLIED PHYSICS, 1970, 41 (11) :4404-+

[2] COARSENING OF GRAIN-BOUNDARY PRECIPITATES [J].

ARDELL, AJ .

ACTA METALLURGICA, 1972, 20 (04) :601-&

[3] Temporal behavior of the number density of particles during Ostwald ripening [J].

Ardell, AJ .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1997, 238 (01) :108-120

[4]

CARROLL MC, 2002, MAT WEEK 2002

[5]

CHAKRAVE.BK, 1967, J PHYS CHEM SOLIDS, V28, P2401, DOI 10.1016/0022-3697(67)90026-1

[6] THE ACTIVITY AND STATE OF THE COPPER SURFACE IN METHANOL SYNTHESIS CATALYSTS [J].

CHINCHEN, GC ;

WAUGH, KC ;

WHAN, DA .

APPLIED CATALYSIS, 1986, 25 (1-2) :101-107

[7] Implication of the microstructure of binary Cu/ZnO catalysts for their catalytic activity in methanol synthesis [J].

Günter, MM ;

Ressler, T ;

Bems, B ;

Büscher, C ;

Genger, T ;

Hinrichsen, O ;

Muhler, M ;

Schlögl, R .

CATALYSIS LETTERS, 2001, 71 (1-2) :37-44

[8] COARSENING OF GRAIN-BOUNDARY PRECIPITATES [J].

KIRCHNER, HO .

METALLURGICAL TRANSACTIONS, 1971, 2 (10) :2861-&

[9]

SLEZOV VV, 1967, FIZ TVERD TELA+, V9, P927

[10] GROWTH KINETICS OF GRAIN-BOUNDARY PRECIPITATES [J].

SPEIGHT, MV .

ACTA METALLURGICA, 1968, 16 (01) :133-&

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