Dispersion measurement of platinum supported on Yttria-Stabilised Zirconia by pulse H2 chemisorption

被引：27

作者：

Fortunato, M. Alves ^{[1
]}

Aubert, D. ^{[1
]}

Capdeillayre, C. ^{[1
]}

Daniel, C. ^{[2
]}

Hadjar, A. ^{[2
]}

Princivalle, A. ^{[1
]}

Guizard, C. ^{[1
]}

Vernoux, P. ^{[1
,2
]}

机构：

[1] CNRS St Gobain CREE, UMR3080, Lab Synth & Fonctionnalisat Ceram, F-84306 Cavaillon, France

[2] Univ Lyon 1, CNRS, UMR 5256, IRCELYON,Inst Rech Catalyse & Environm Lyon, F-69626 Villeurbanne, France

来源：

APPLIED CATALYSIS A-GENERAL | 2011年 / 403卷 / 1-2期

关键词：

Hydrogen pulse chemisorption; Pt dispersion; Yttria-Stabilised Zirconia; Oxygen vacancies; Ionic conductor; ELECTROCHEMICAL PROMOTION; CATALYSTS; ADSORPTION; ION;

D O I：

10.1016/j.apcata.2011.06.005

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Platinum nanoparticles were dispersed by wet impregnation on YSZ (8 mol% Y2O3) an ionically conducting support. The Pt dispersion of a series of catalysts was determined by using H-2 pulse chemisorption. Temperature Programmed Reduction (TPR) experiments were performed to characterize the pre-reduction step before dispersion measurements. Finally, a fast and reliable procedure was defined for the Pt dispersion measurements consisting in a pre-reduction step in hydrogen at 500 degrees C before the H-2 pulse chemisorption performed at -28 degrees C. Reproducible Pt dispersion values were obtained in good agreement with those measured by pulse CO chemisorptions and static volumetric titration. In addition, the combination of Diffuse Reflectance Infrared Fourier Transform (DRIFT) spectroscopy and TPR has evidenced the role of surface oxygen vacancies on YSZ support for both H-2 and CO chemisorptions. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：18 / 24

页数：7

共 21 条

[11] Metal dispersion of CeO2-ZrO2 supported platinum catalysts measured by H2 or CO chemisorption [J].

Perrichon, V ;

Retailleau, L ;

Bazin, P ;

Daturi, M ;

Lavalley, JC .

APPLIED CATALYSIS A-GENERAL, 2004, 260 (01) :1-8

[12] Impact of the support on the heat of adsorption of the linear CO species on Pt-containing catalysts [J].

Pillonel, P ;

Derrouiche, S ;

Bourane, A ;

Gaillard, F ;

Vernoux, P ;

Bianchi, D .

APPLIED CATALYSIS A-GENERAL, 2005, 278 (02) :223-231

[13] Spillover of hydrogen over zirconium oxide promoted by sulfate ion and platinum [J].

Shishido, T ;

Hattori, H .

APPLIED CATALYSIS A-GENERAL, 1996, 146 (01) :157-164

[14] Quantitative analysis of adsorbate concentrations by diffuse reflectance FT-IR [J].

Sirita, Jinda ;

Phanichphant, Sukon ;

Meunier, Frederic C. .

ANALYTICAL CHEMISTRY, 2007, 79 (10) :3912-3918

[15] SOLID ELECTROLYTES WITH OXYGEN ION CONDUCTION [J].

SUBBARAO, EC ;

MAITI, HS .

SOLID STATE IONICS, 1984, 11 (04) :317-338

[16] Correlation between deactivation and Pt-carbonyl formation during toluene hydrogenation using a H2/CO2 mixture [J].

Taimoor, Aqeel Ahmad ;

Pitault, Isabelle ;

Meunier, Frederic C. .

JOURNAL OF CATALYSIS, 2011, 278 (01) :153-161

[17] STRONG METAL-SUPPORT INTERACTIONS - OCCURRENCE AMONG BINARY OXIDES OF GROUPS IIA-VB [J].

TAUSTER, SJ ;

FUNG, SC .

JOURNAL OF CATALYSIS, 1978, 55 (01) :29-35

[18] SMSI EFFECTS ON CO ADSORPTION AND HYDROGENATION ON PT CATALYSTS .1. INFRARED-SPECTRA OF ADSORBED CO PRIOR TO AND DURING REACTION CONDITIONS [J].

VANNICE, MA ;

TWU, CC ;

MOON, SH .

JOURNAL OF CATALYSIS, 1983, 79 (01) :70-80

[19]

Vayenas C.G., 2001, Electrochemical activation of catalysis: promotion, electrochemical promotion, and metal-support interactions, DOI DOI 10.1007/0-306-47551-0_4

[20] The double-layer approach to promotion, electrocatalysis, electrochemical promotion, and metal-support interactions [J].

Vayenas, CG ;

Brosda, S ;

Pliangos, C .

JOURNAL OF CATALYSIS, 2003, 216 (1-2) :487-504

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