XPS STUDY OF SURFACE OXIDATION OF CARBON-SUPPORTED PT CATALYSTS

被引：53

作者：

ALDERUCCI, V

PINO, L

ANTONUCCI, PL

ROH, W

CHO, J

KIM, H

COCKE, DL

ANTONUCCI, V

机构：

[1] UNIV REGGIO CALABRIA,FAC ENGN,I-89100 REGGIO CALABRIA,ITALY

[2] SEOUL NATL UNIV,DEPT CHEM,SEOUL,SOUTH KOREA

[3] LAMAR UNIV,DEPT CHEM,BEAUMONT,TX

来源：

MATERIALS CHEMISTRY AND PHYSICS | 1995年 / 41卷 / 01期

关键词：

PT/C CATALYSTS; PHOSPHORIC ACID FUEL CELLS; SURFACE GROUPS;

D O I：

10.1016/0254-0584(95)01497-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Pt/C catalysts for phosphoric acid fuel cell (PAFC) applications have been studied by X-ray photoelectron spectroscopy (XPS) and potentiometric titration in aqueous suspensions. Catalysts activated at temperatures in the range 800-950 degrees C have shown a significant amount of C edge and C pi functionalities which generate a variable amount of pyrone-type complexes after exposure to air. The relative amount of such basic groups has been found to affect the amount of Pt oxidized and hence the electrochemically active surface area of the catalyst.

引用

页码：9 / 14

页数：6

共 32 条

[1] XPS SIMS STUDY ON THE SURFACE-CHEMISTRY OF COMMERCIALLY AVAILABLE ACTIVATED CARBONS USED AS CATALYST SUPPORTS
ALBERS, P
DELLER, K
DESPEYROUX, BM
SCHAFER, A
SEIBOLD, K
[J]. JOURNAL OF CATALYSIS, 1992, 133 (02) : 467 - 478
[2] X-RAY PHOTOELECTRON-SPECTROSCOPY OF ADSORBED OXYGEN AND CARBONACEOUS SPECIES ON PLATINUM-ELECTRODES
ALLEN, GC
TUCKER, PM
CAPON, A
PARSONS, R
[J]. JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1974, 50 (03): : 335 - 343
[3] ANTONUCCI PL, 1994, J APPL ELECTROCHEM, V24, P58
[4] THE ROLE OF PT-LOADING, THERMAL-TREATMENT AND EXPOSURE TO AIR ON THE ACID-BASE BEHAVIOR OF A PT-CARBON BLACK CATALYST
ARICO, AS
ANTONUCCI, V
PINO, L
ANTONUCCI, PL
GIORDANO, N
[J]. CARBON, 1990, 28 (05) : 599 - 609
[5] THE INFLUENCE OF FUNCTIONAL-GROUPS ON THE SURFACE ACID-BASE CHARACTERISTICS OF CARBON-BLACKS
ARICO, AS
ANTONUCCI, V
MINUTOLI, M
GIORDANO, N
[J]. CARBON, 1989, 27 (03) : 337 - 347
[6] BIRKE P, 1980, CHEM TECH-LEIPZIG, V32, P245
[7] XPS, UPS AND THERMAL-DESORPTION STUDIES OF THE REACTIONS OF FORMALDEHYDE AND FORMIC-ACID WITH THE CU(110) SURFACE
BOWKER, M
MADIX, RJ
[J]. SURFACE SCIENCE, 1981, 102 (2-3) : 542 - 565
[8] COLOMA F, 1992, 10TH P INT C CAT BUD, P301
[9] CONTRACTOR AQ, 1984, ELECTROCHIM ACTA, V29, P427
[10] X-RAY PHOTOELECTRON SPECTROSCOPIC STUDIES OF OXIDE-FILMS ON PLATINUM AND GOLD ELECTRODES
DICKINSON, T
POVEY, AF
SHERWOOD, PMA
[J]. JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1975, 71 (02): : 298 - 311

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