n-Pentane Conversion on Sulfated Zirconia in the Absence and Presence of Carbon Monoxide: Evidence for Monomolecular Mechanism of Isomerization from the 13C MAS NMR Study Научная публикация
| Журнал |
Journal of Catalysis
ISSN: 0021-9517 , E-ISSN: 1090-2694 |
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| Вых. Данные | Год: 2001, Том: 203, Номер: 2, Страницы: 273-280 Страниц : 8 DOI: 10.1006/jcat.2001.3318 | ||
| Ключевые слова | Carbonylation, Isomerization, Mechanism, n-pentane, NMR spectroscopy, Sulfated zirconia | ||
| Авторы |
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| Организации |
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Информация о финансировании (1)
| 1 | Российский фонд фундаментальных исследований | 99-03-32454 |
Реферат:
In situ 13C MAS NMR analysis of hydrocarbon products formed from the selectively 13C-labeled n-pentane on sulfated zirconia in the absence and presence of carbon monoxide provide the evidence that iso-pentane forms by two parallel processes: isomerization and conjunct polymerization. Peculiarities of the 13C label scrambling from n-pentane into iso-pentane provide unequivocal evidence for monomolecular mechanism of the alkane isomerization. Besides iso-pentane, conjunct polymerization affords also the products of n-pentane “disproportionation,” butanes and hexanes and stable cyclopentenyl cations; the latter are in charge of the catalyst deactivation. Carbon monoxide suppresses completely the process of conjunct polymerization, whereas the process of intramolecular isomerization does not. In the presence of carbon monoxide carbonylation of n-pentane occurs in parallel with its isomerization, giving rise to a mixture of aldehydes, ketones, and carboxylic acids. Carbonylation of n-pentane with CO contributes to the earlier observed negative effect of CO on the alkane isomerization rate.
Библиографическая ссылка:
Luzgin M.V.
, Stepanov A.G.
, Shmachkova V.P.
, Kotsarenko N.S.
n-Pentane Conversion on Sulfated Zirconia in the Absence and Presence of Carbon Monoxide: Evidence for Monomolecular Mechanism of Isomerization from the 13C MAS NMR Study
Journal of Catalysis. 2001. V.203. N2. P.273-280. DOI: 10.1006/jcat.2001.3318 WOS Scopus РИНЦ CAPlusCA OpenAlex
n-Pentane Conversion on Sulfated Zirconia in the Absence and Presence of Carbon Monoxide: Evidence for Monomolecular Mechanism of Isomerization from the 13C MAS NMR Study
Journal of Catalysis. 2001. V.203. N2. P.273-280. DOI: 10.1006/jcat.2001.3318 WOS Scopus РИНЦ CAPlusCA OpenAlex
Даты:
| Поступила в редакцию: | 13 нояб. 2000 г. |
| Принята к публикации: | 14 июн. 2001 г. |
| Опубликована в печати: | 25 окт. 2001 г. |
| Опубликована online: | 25 мая 2002 г. |
Идентификаторы БД:
| Web of science: | WOS:000171973400003 |
| Scopus: | 2-s2.0-0035950581 |
| РИНЦ: | 13378192 |
| Chemical Abstracts: | 2001:819142 |
| Chemical Abstracts (print): | 136:150840 |
| OpenAlex: | W50063926 |