In-situ study of the catalytic oxidation of CO on a Pt(110) surface using ambient pressure X-ray photoelectron spectroscopy

被引：36

作者：

Chung, Jen-Yang ^{[1
]}

Aksoy, Funda ^{[1
]}

Grass, Michael E. ^{[1
]}

Kondoh, Hiroshi ^{[2
]}

Ross, Phil, Jr. ^{[3
]}

Liu, Zhi ^{[1
]}

Mun, Bongjin Simon ^{[4
]}

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA

[2] Keio Univ, Dept Chem, Yokohama, Kanagawa 223, Japan

[3] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA

[4] Hanyang Univ, Dept Appl Phys, Ansan 426791, South Korea

来源：

SURFACE SCIENCE | 2009年 / 603卷 / 05期

关键词：

CO oxidation; Pt(110); Ambient pressure X-ray photoemission spectroscopy; ULTRAHIGH-VACUUM; ADSORBED CO; LEVEL; SPECTRA; SCIENCE; GAP;

D O I：

10.1016/j.susc.2009.01.016

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：

CO and O-2. co-adsorption and the catalytic oxidation of CO on a Pt(1 1 0) surface under various pressures of CO and O-2 (up to 250 mTorr) are studied using ambient pressure X-ray photoelectron spectroscopy (APXPS) and mass spectrometry. There is no surface oxide formation on Pt under our reaction conditions. CO oxidation in this pressure (<500 mTorr), O-2 to CO ratio (<10), and temperature (150 degrees C) regime is consistent with the Langmuir-Hinshelwood reaction mechanism. Our findings provide in-situ surface chemical composition data of the catalytic oxidation of CO on Pt(1 1 0) at total pressures below 1 Torr. (c) 2009 Elsevier B.V. All rights reserved.

引用

页码：L35 / L38

页数：4

共 23 条

[1] Structure and reactivity of surface oxides on Pt(110) during catalytic CO oxidation [J].

Ackermann, MD ;

Pedersen, TM ;

Hendriksen, BLM ;

Robach, O ;

Bobaru, SC ;

Popa, I ;

Quiros, C ;

Kim, H ;

Hammer, B ;

Ferrer, S ;

Frenken, JWM .

PHYSICAL REVIEW LETTERS, 2005, 95 (25)

[2] OVERLAYER STRUCTURE FROM ADSORBATE AND SUBSTRATE CORE-LEVEL BINDING-ENERGY SHIFTS - CO, CCH3 AND O ON PT(111) [J].

BJORNEHOLM, O ;

NILSSON, A ;

TILLBORG, H ;

BENNICH, P ;

SANDELL, A ;

HERNNAS, B ;

PUGLIA, C ;

MARTENSSON, N .

SURFACE SCIENCE, 1994, 315 (1-2) :L983-L989

[3] A MOLECULAR-BEAM STUDY OF THE CATALYTIC-OXIDATION OF CO ON A PT(111) SURFACE [J].

CAMPBELL, CT ;

ERTL, G ;

KUIPERS, H ;

SEGNER, J .

JOURNAL OF CHEMICAL PHYSICS, 1980, 73 (11) :5862-5873

[4] Highly active surfaces for CO oxidation on rh, pd, and pt [J].

Chen, M. S. ;

Cal, Y. ;

Yan, Z. ;

Gath, K. K. ;

Axnanda, S. ;

Goodman, D. Wayne .

SURFACE SCIENCE, 2007, 601 (23) :5326-5331

[5] REACTIONS AT WELL-DEFINED SURFACES [J].

ERTL, G .

SURFACE SCIENCE, 1994, 299 (1-3) :742-754

[6] Beyond the chemical shift: Vibrationally resolved core-level photoelectron spectra of adsorbed CO [J].

Fohlisch, A ;

Wassdahl, N ;

Hasselstrom, J ;

Karis, O ;

Menzel, D ;

Martensson, N ;

Nilsson, A .

PHYSICAL REVIEW LETTERS, 1998, 81 (08) :1730-1733

[7] OXYGEN-ADSORPTION ON PT(110)-(1 X-2) AND PT(110)-(1 X-1) [J].

FREYER, N ;

KISKINOVA, M ;

PIRUG, G ;

BONZEL, HP .

SURFACE SCIENCE, 1986, 166 (01) :206-220

[8] CO oxidation on Pt(110): Scanning tunneling microscopy inside a high-pressure flow reactor [J].

Hendriksen, BLM ;

Frenken, JWM .

PHYSICAL REVIEW LETTERS, 2002, 89 (04) :1-046101

[9] In situ spectroscopic study of the oxidation and reduction of Pd(111) [J].

Ketteler, G ;

Ogletree, DF ;

Bluhm, H ;

Liu, HJ ;

Hebenstreit, ELD ;

Salmeron, M .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2005, 127 (51) :18269-18273

[10] OSCILLATORY CO OXIDATION ON PT(110) - MODELING OF TEMPORAL SELF-ORGANIZATION [J].

KRISCHER, K ;

EISWIRTH, M ;

ERTL, G .

JOURNAL OF CHEMICAL PHYSICS, 1992, 96 (12) :9161-9172

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