CO-induced changes in structure of supported rhenium

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29 Citations (Scopus)

Abstract

The interaction of CO with highly reduced Re/Al2O3 was investigated at 100-673 K by means of infrared spectroscopy. The adsorption of CO at 100 K produced absorption bands characteristic of linearly and bridge bonded CO. At 200-300 K well-observable spectral changes were experienced, their extent depending on the temperature and adsorption time. The absorption bands formed suggest the occurrence of CO-induced structural changes in the Re crystallites and the formation of Re carbonyls with higher CO/Re ratio, most probably Re2(CO)10. Further spectral changes occurred at 373-473 K, indicating the transformation of the more complex Re carbonyl into Re tricarbony 1. This transformation was promoted by H2O. The formation of Re tricarbonyl from Rex-CO species was found to be very limited.

Original languageEnglish
Pages (from-to)1349-1355
Number of pages7
JournalJournal of Physical Chemistry
Volume96
Issue number3
Publication statusPublished - 1992

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Rhenium
rhenium
Carbon Monoxide
Absorption spectra
absorption spectra
Adsorption
adsorption
Crystallites
crystallites
Infrared spectroscopy
infrared spectroscopy
occurrences
interactions
Temperature
temperature

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

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title = "CO-induced changes in structure of supported rhenium",
abstract = "The interaction of CO with highly reduced Re/Al2O3 was investigated at 100-673 K by means of infrared spectroscopy. The adsorption of CO at 100 K produced absorption bands characteristic of linearly and bridge bonded CO. At 200-300 K well-observable spectral changes were experienced, their extent depending on the temperature and adsorption time. The absorption bands formed suggest the occurrence of CO-induced structural changes in the Re crystallites and the formation of Re carbonyls with higher CO/Re ratio, most probably Re2(CO)10. Further spectral changes occurred at 373-473 K, indicating the transformation of the more complex Re carbonyl into Re tricarbony 1. This transformation was promoted by H2O. The formation of Re tricarbonyl from Rex-CO species was found to be very limited.",
author = "F. Solymosi and T. B{\'a}ns{\'a}gi",
year = "1992",
language = "English",
volume = "96",
pages = "1349--1355",
journal = "Journal of Physical Chemistry",
issn = "0022-3654",
publisher = "American Chemical Society",
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T1 - CO-induced changes in structure of supported rhenium

AU - Solymosi, F.

AU - Bánsági, T.

PY - 1992

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N2 - The interaction of CO with highly reduced Re/Al2O3 was investigated at 100-673 K by means of infrared spectroscopy. The adsorption of CO at 100 K produced absorption bands characteristic of linearly and bridge bonded CO. At 200-300 K well-observable spectral changes were experienced, their extent depending on the temperature and adsorption time. The absorption bands formed suggest the occurrence of CO-induced structural changes in the Re crystallites and the formation of Re carbonyls with higher CO/Re ratio, most probably Re2(CO)10. Further spectral changes occurred at 373-473 K, indicating the transformation of the more complex Re carbonyl into Re tricarbony 1. This transformation was promoted by H2O. The formation of Re tricarbonyl from Rex-CO species was found to be very limited.

AB - The interaction of CO with highly reduced Re/Al2O3 was investigated at 100-673 K by means of infrared spectroscopy. The adsorption of CO at 100 K produced absorption bands characteristic of linearly and bridge bonded CO. At 200-300 K well-observable spectral changes were experienced, their extent depending on the temperature and adsorption time. The absorption bands formed suggest the occurrence of CO-induced structural changes in the Re crystallites and the formation of Re carbonyls with higher CO/Re ratio, most probably Re2(CO)10. Further spectral changes occurred at 373-473 K, indicating the transformation of the more complex Re carbonyl into Re tricarbony 1. This transformation was promoted by H2O. The formation of Re tricarbonyl from Rex-CO species was found to be very limited.

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