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Volumn 102, Issue 1, 1998, Pages 106-110

Changing reactivity of a bimetallic surface via oxidation: Reactions of methanol on oxygen-covered Co thin films

Author keywords

[No Author keywords available]

Indexed keywords

ANNEALING; CARBON MONOXIDE; CHEMICAL BONDS; COBALT; DECOMPOSITION; FORMALDEHYDE; HYDROGEN; LOW ENERGY ELECTRON DIFFRACTION; METHANOL; MOLYBDENUM; OXYGEN; THIN FILMS;

EID: 0031648030     PISSN: 15206106     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp971127m     Document Type: Article
Times cited : (7)

References (45)
  • 22
    • 85088809741 scopus 로고    scopus 로고
    • note
    • 44 and the C(1s):S(2p) and O(1s):C(1s) ratios calculated from the decomposition of thiophene and methanol, respectively, on Mo-(110).
  • 23
    • 85088810289 scopus 로고    scopus 로고
    • note
    • 2 evolution (36 amu) was observed when the Co-O overlayer was prepared with oxygen-18.
  • 24
    • 85088810112 scopus 로고    scopus 로고
    • note
    • 3OD.
  • 26
    • 11644294445 scopus 로고    scopus 로고
    • note
    • Since molecular and recombinant CO are the only C-containing product formed from methanol reaction on the pure Co overlayer, the integrated CO signal from temperature-programmed reaction is used as a measurement of the total reactivity. Similarly, the yields for formaldehyde and CO were used as a measurement of the total reactivity of the oxidized 1.3 ML Co overlayer. The estimated total reactivity is a lower limit since the methyl radical yield was not included in this calculation. Methanol desorption is not considered to contribute to total reactivity. The relative mass spectrometer sensitivities for formaldehyde and CO were determined by leaking in a fixed pressure of authentic CO and formaldehyde samples, in separate experiments, and comparing the signal intensities.
  • 27
    • 85088809982 scopus 로고    scopus 로고
    • note
    • 2O is not shown because the 18 amu signal could not be reliably integrated, due to the water contribution associated with methanol sublimation.
  • 28
    • 11644293604 scopus 로고    scopus 로고
    • note
    • Some formaldehyde is produced even on the pure ∼1.0 ML oxygen overlayer on Mo(110). The formaldehyde yield is quite sensitive to the oxygen coverage and preparation conditions.
  • 45
    • 85088809719 scopus 로고    scopus 로고
    • note
    • 2 signal are from scatter due to experimental error.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.