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Epoxidation of Ethylene by Anion Radicals of α-Oxygen on the Surface of FeZSM-5 Zeolite Full article

Общее Language: Английский, Genre: Full article,
Status: Published, Source type: Original
Journal Journal of Catalysis
ISSN: 0021-9517 , E-ISSN: 1090-2694
Output data Year: 2014, Volume: 309, Pages: 453-459 Pages count : 7 DOI: 10.1016/j.jcat.2013.11.001
Tags α-Oxygen, Ethylene epoxidation, Infrared spectroscopy, N2O oxidant, Oxygen anion radicals, Product extraction
Authors Starokon Eugeny V. 1 , Parfenov Mikhail V. 1 , Pirutko Larisa V. 1 , Soshnikov Igor E. 1 , Panov Gennady I. 1
Affiliations
1 Boreskov Institute of Catalysis SB RAS

Funding (2)

1 Russian Foundation for Basic Research 12-03-00063
2 Russian Foundation for Basic Research 12-03-31701

Abstract: The stoichiometric oxidation of ethylene by anion radicals of α-oxygen, (FeIII–O-)α, created on the surface of non-modified and Na-modified FeZSM-5 zeolite was studied in the temperature range from 25 down to -60oC. Upon extraction, the products were identified using the gas chromatography, gas chromatography–mass spectrometry, and nuclear magnetic resonance. Unlike the oxidation of methane, the reaction C2H4 + Oα was shown to proceed without hydrogen abstraction from the ethylene (infrared spectroscopy data). It leads to Oα addition over the double C=C bond yielding the ethylene oxide (EO) primary product. Sodium modification of the zeolite strongly increases the selectivity for EO, which attains 80-84% at the reaction temperature of 60oC. A much lower selectivity at room temperature relates mainly to a secondary reaction of EO with ethylene leading to butyraldehyde. High epoxidizing selectivity of α-oxygen is discussed in relation to the mechanism of ethylene epoxidation on silver catalyst.
Cite: Starokon E.V. , Parfenov M.V. , Pirutko L.V. , Soshnikov I.E. , Panov G.I.
Epoxidation of Ethylene by Anion Radicals of α-Oxygen on the Surface of FeZSM-5 Zeolite
Journal of Catalysis. 2014. V.309. P.453-459. DOI: 10.1016/j.jcat.2013.11.001 publication_identifier_short.wos_identifier_type publication_identifier_short.scopus_identifier_type publication_identifier_short.rinz_identifier_type
Dates:
Submitted: Sep 26, 2013
Accepted: Nov 1, 2013
Published online: Nov 30, 2013
Published print: Jan 1, 2014
Identifiers:
publication_identifier.wos_identifier_type WOS:000330815400047
publication_identifier.scopus_identifier_type 2-s2.0-84888583583
publication_identifier.rinz_identifier_type 21861325
publication_identifier.accession_number_identifier_type 2013:1986433
publication_identifier.chemical_accession_number_identifier_type 160:118881
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