FTIR spectroscopic study on nickel(II)-exchanged sulfated alumina: nature of the active sites in the catalytic oligomerization of ethene
Date
2002
Authors
Davydov, A. A.
Kantcheva, M.
Chepotko, M. L.
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Source Title
Catalysis Letters
Print ISSN
1011-372X
Electronic ISSN
Publisher
Springer
Volume
83
Issue
1-2
Pages
97 - 108
Language
English
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Journal Title
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Abstract
The nature of the active sites in nickel(II)-exchanged sulfated alumina in the reaction of ethene oligomerization has been studied by means of FTIR spectroscopy of adsorbed CO. It has been established that isolated nickel(I) species are the active sites in this process. These sites are formed by a reduction process, in which protonic centers are involved. The latter are due to the presence of covalently-bonded sulfate ions on the catalyst surface.
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Keywords
Dimerization , Ethene , FTIR study , Nature of active sites , Nickel-exchanged sulfated alumina , Adsorption , Alumina , Carbon monoxide , Chemical bonds , Dimerization , Ethylene , Fourier transform infrared spectroscopy , Ions , Nickel compounds , Surface reactions , Oligomerization , Catalyst activity