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Volumn 52, Issue 6, 1997, Pages 711-718

Laboratory stopped-flow XAFS apparatus. Structure determination of the short-lived peroxochromium intermediate formed during reduction process of chromate(VI) ion by hydrogen peroxide

Author keywords

Chromate(VI); Hydrogen Peroxide; Peroxochromium Intermediate; Stopped Flow XAFS; Structure Parameter

Indexed keywords

CHROMATES; HYDROGEN PEROXIDE; MOLECULES; OXIDATION; PEROXIDES; REACTION INTERMEDIATES; X RAY ABSORPTION;

EID: 0040567109     PISSN: 09320776     EISSN: None     Source Type: Journal    
DOI: 10.1515/znb-1997-0608     Document Type: Article
Times cited : (17)

References (55)
  • 11
    • 0017651135 scopus 로고
    • A. McAuley, M. A. Olatunji, Can. J. Chem. 55, 3328 (1977); Can. J. Chem. 55, 3335 (1977).
    • (1977) Can. J. Chem. , vol.55 , pp. 3335
  • 19
    • 0040851863 scopus 로고    scopus 로고
    • note
    • For XAFS measurements around the Cr K-edge (5.997 keV), the diffraction angle (θ) on the monochromator crystal (LiF(200) surface, 2d = 4.0267 Å, d is the interplanar spacing) center must be set to 30.92°. This angle is much higher than that of previous measurements around the Cu K-edge (8.99 keV), and the reflection efficiency on the monochromator crystal is then lowered at the Cr K-edge. The use of other flat crystals with a larger d value, such as Ge(111) and Si(220), will make θ lower and will overcome the above problems. However, since the absorption of X-rays by these heavy monochromator elements becomes high, the reflection efficiency is also lowered.
  • 39
    • 0001447307 scopus 로고
    • T. K. Sham, J. B. Hastings, M. L. Perlman, J. Am. Chem. Soc. 102, 5904 (1980); Chem. Phys. Lett. 83, 391 (1981).
    • (1981) Chem. Phys. Lett. , vol.83 , pp. 391
  • 45
    • 0039073592 scopus 로고    scopus 로고
    • note
    • Because we have used a rotating anode X-ray generator for construction of the laboratory stopped-flow XAFS apparatus, the time-resolution is limited by the low X-ray intensity. Though a time-resolution in the order of ms may be possible as the performance of the hardware, the S/N ratio of the data obtained in the case is too low to analyze the XAFS spectra.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.