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Titolo:
SUPPRESSION OF FORMATION OF ETHYLIDYNE ON PT(111) BY REVERSIBLY ADSORBED DI-SIGMA-BONDED ETHYLENE STUDIED BY IN-SITU IRAS
Autore:
OHTANI T; KUBOTA J; KONDO JN; HIROSE C; DOMEN K;
Indirizzi:
TOKYO INST TECHNOL,RESOURCES UTILIZAT RES LAB,MIDORI KU,4259 NAGATSUTA YOKOHAMA KANAGAWA 226850 JAPAN TOKYO INST TECHNOL,RESOURCES UTILIZAT RES LAB,MIDORI KU YOKOHAMA KANAGAWA 226850 JAPAN
Titolo Testata:
Surface science
fascicolo: 1-2, volume: 415, anno: 1998,
pagine: 983 - 987
SICI:
0039-6028(1998)415:1-2<983:SOFOEO>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
TRANSITION-METAL SURFACES; SUM-FREQUENCY GENERATION; INFRARED-SPECTROSCOPY; THERMAL-DESORPTION; HYDROGENATION; CHEMISTRY; CONVERSION; KINETICS; CHEMISORPTION; MONOLAYERS;
Keywords:
ETHYLENE; ETHYLIDYNE; IRAS; PT(111);
Tipo documento:
Letter
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
24
Recensione:
Indirizzi per estratti:
Citazione:
T. Ohtani et al., "SUPPRESSION OF FORMATION OF ETHYLIDYNE ON PT(111) BY REVERSIBLY ADSORBED DI-SIGMA-BONDED ETHYLENE STUDIED BY IN-SITU IRAS", Surface science, 415(1-2), 1998, pp. 983-987

Abstract

The suppression of ethylidyne formation on Pt(Ill) by reversible adsorption of di-a-bonded ethylene in the presence of 1.3 x 10(2) Pa of ethylene was observed using infrared reflection absorption spectroscopy (IRAS). Di-B-bonded ethylene was converted to ethylidyne at 260-300 K in 1.3 x 10(2) Pa of ethylene, while it was converted at 240-260 K in vacuum. The vacant sites adjacent to di-sigma-bonded ethylene are regarded as being necessary for ethylidyne formation, which were occupied by di-sigma-bonded ethylene equilibrated with gaseous ethylene. The reversible adsorption of di-sigma-bonded ethylene was notified by an IRAS peak at 2906 cm(-1) even at 300 K, which was confirmed by the substitution of isotopically labeled ethylene at 200 K. (C) 1998 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/09/20 alle ore 00:34:33