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Energy dispersive x-ray absorption spectroscopy for studies of catalysts in solution

G Guilera1, G Smolentsev2, A V Soldatov2, M Hii3, M Benfatto4, M A Newton5 and S Pascarelli5

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The millisecond time resolution achieved by Energy Dispersive EXAFS (EDE) and the high stability provided by the unmoved optical components make this technique very attractive to study chemical reactions and elucidate reactive intermediate species. Great progress has been made on the EDE study of the problematic in situ experiments of reactions in solution. Herein, limitations and solutions for the study of these systems are given. Two examples of catalytic reactions followed in situ and carried out in a stopped-flow/UV-Vis spectroscopy/EDE set-up are shown.


PACS

82.30.Vy Homogeneous catalysis in solution, polymers and zeolites

78.70.Dm X-ray absorption spectra

78.40.Dw Liquids

82.80.Dx Analytical methods involving electronic spectroscopy

82.80.Ej X-ray, Mössbauer, and other gamma-ray spectroscopic analysis methods

Subjects

Soft matter, liquids and polymers

Condensed matter: electrical, magnetic and optical

Chemical physics and physical chemistry

Dates

Issue 1 (2009)



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