Tellurium NaX Zeolites II. Nature of Active Sites Full article
Journal |
Journal of Catalysis
ISSN: 0021-9517 , E-ISSN: 1090-2694 |
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Output data | Year: 1983, Volume: 81, Number: 2, Pages: 369-374 Pages count : 6 DOI: 10.1016/0021-9517(83)90175-6 | ||||||
Authors |
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Affiliations |
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Funding (4)
1 | National Science Foundation | GP-39482 |
2 | National Science Foundation | CHE-77-10514 |
3 | Welch Foundation | |
4 | ConocoPhillips (United States) |
Abstract:
An unusual dehydrocyclization catalyst can be prepared from an intimate mixture of NaX zeolite and tellurium metal. Careful X-ray diffraction studies by researchers at Mobil Research and Development Company indicated that the active site was a Te2- species nestled in the supercage of the zeolite and coordinated to sodium ions in the zeolite. Our ESCA spectra, however, point toward elemental Te0 as the active sites, and sodium NMR data confirm that the Te is coordinated to sodium ions in the host oxide. These sites are capable of accommodating up to 2H/Te in an activated adsorption process.
A dehydrogenation mechanism consistent with the observed kinetics involves the simultaneous removal of two hydrogen atoms by these Te0 sites in a rate limiting step.
Cite:
Price G.L.
, Ismagilov Z.R.
, Hightower J.W.
Tellurium NaX Zeolites II. Nature of Active Sites
Journal of Catalysis. 1983. V.81. N2. P.369-374. DOI: 10.1016/0021-9517(83)90175-6 WOS Scopus РИНЦ
Tellurium NaX Zeolites II. Nature of Active Sites
Journal of Catalysis. 1983. V.81. N2. P.369-374. DOI: 10.1016/0021-9517(83)90175-6 WOS Scopus РИНЦ
Dates:
Submitted: | Oct 21, 1982 |
Published print: | Jun 1, 1983 |
Published online: | May 24, 2004 |
Identifiers:
Web of science | WOS:A1983QT13200011 |
Scopus | 2-s2.0-48749145673 |
Elibrary | 23670740 |
Chemical Abstracts | 1983:205044 |
Chemical Abstracts (print) | 98:205044 |
OpenAlex | W2003846095 |