Structural evolution of WO3 nanoclusters on ZrO2

被引：14

作者：

Angeles-Chavez, C ^{[1
]}

Cortes-Jácome, MA ^{[1
]}

Torres-Garcia, E ^{[1
]}

Toledo-Antonio, JA ^{[1
]}

机构：

[1] Inst Mexicano Petr, Prog Ingn Mol, Mexico City 07730, DF, Mexico

来源：

JOURNAL OF MATERIALS RESEARCH | 2006年 / 21卷 / 04期

关键词：

D O I：

10.1557/JMR.2006.0100

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Direct evidence of the transformation of WOx species in WO3 nanoclusters on WOx -ZrO2 system was achieved by high-resolution transmission electron microscopy (HRTEM) and Raman spectroscopy on samples obtained by a conventional precipitation method and annealed from 560 to 800 degrees C. WO3 Nanoclusters with 2-nm crystal size orthorhombic structure were identified on the ZrO2 surface after annealing at 800 degrees C.

引用

页码：807 / 810

页数：4

共 10 条

[1]

ARATA K, 1988, P 9 INT C CAT CALG 1, P1727

[2] Structure and electronic properties of solid acids based on tungsten oxide nanostructures [J].

Barton, DG ;

Shtein, M ;

Wilson, RD ;

Soled, SL ;

Iglesia, E .

JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (04) :630-640

[3] Structural and catalytic characterization of solid acids based on zirconia modified by tungsten oxide [J].

Barton, DG ;

Soled, SL ;

Meitzner, GD ;

Fuentes, GA ;

Iglesia, E .

JOURNAL OF CATALYSIS, 1999, 181 (01) :57-72

[4] Crystallization behavior of tungstate on zirconia and its relationship to acidic properties .1. Effect of preparation parameters [J].

Boyse, RA ;

Ko, EI .

JOURNAL OF CATALYSIS, 1997, 171 (01) :191-207

[5] Microstructural properties of the Al-Mgx/TiC composites obtained by infiltration techniques [J].

Contreras, A ;

Albiter, A ;

Pérez, R .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2004, 16 (22) :S2241-S2249

[6] Solid solutions of WO3 into zirconia in WO3-ZrO2 catalysts [J].

Cortés-Jácome, MA ;

Toledo-Antonio, JA ;

Armendáriz, H ;

Hernández, I ;

Bokhimi, X .

JOURNAL OF SOLID STATE CHEMISTRY, 2002, 164 (02) :339-344

[7] [001] TILT GRAIN-BOUNDARIES IN YBA2CU3O7-X THIN-FILMS [J].

GAO, Y ;

MERKLE, KL ;

BAI, G ;

CHANG, HLM ;

LAM, DJ .

ULTRAMICROSCOPY, 1991, 37 (1-4) :326-340

[8] Hydroisomerization-cracking of n-octane on Pt/WO42--ZrO2 and Pt/SO42--ZrO2 -: Effect of Pt load on catalyst performance [J].

Grau, JM ;

Yori, JC ;

Parera, JM .

APPLIED CATALYSIS A-GENERAL, 2001, 213 (02) :247-257

[9] Structural transformation in nanosized zirconium oxide -: art. no. 155404 [J].

Jouanne, M ;

Morhange, JF ;

Kanehisa, MA ;

Haro-Poniatowski, E ;

Fuentes, GA ;

Torres, E ;

Hernández-Tellez, E .

PHYSICAL REVIEW B, 2001, 64 (15)

[10] WOx/ZrO2 catalysts prepared by anionic exchange:: In situ Raman investigation from the precursor solutions to the calcined catalysts [J].

Loridant, S ;

Feche, C ;

Essayem, N ;

Figueras, F .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (12) :5631-5637

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