Quasicatalytic and Catalytic Oxidation of Methane to Methanol by Nitrous Oxide over FeZSM-5 Zeolite
Тезисы доклада
| Общее |
Язык:
Английский,
Жанр:
Тезисы доклада (Meeting Abstracts),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Конференция |
EuropaCat-XII: 12th European Congress on Catalysis “Catalysis: Balancing the use of fossil and renewable resources”
30 авг. - 4 сент. 2015
,
Казань
|
| Сборник |
EuropaCat XII. Catalysis: Balancing the use of fossil and renewable resources. XII European Congress on Catalysis, Kazan (Russia), 30 August - 4 September, 2015 : Book of Abstracts
Сборник,
Boreskov Institute of Catalysis. Novosibirsk.2015.
2184 c. ISBN 9785906376107.
РИНЦ
|
| Вых. Данные |
Год: 2015,
Номер статьи
: ISO-OP24,
Страниц
: 2
|
| Авторы |
Starokon E.V.
1
,
Parfenov M.V.
1
,
Pirutko L.V.
1
,
Panov G.I.
1
|
| Организации |
| 1 |
Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia
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|
Информация о финансировании (1)
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1
|
Российский фонд фундаментальных исследований
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15-03-03218
|
Methane oxidation by N2O at 200°C and below was shown to proceed in a quasicatalytic mode resulting in product
accumulation on FeZSM-5 surface. Methanol that formed via methane oxidation by alfa-oxygen, CH4 + (FeIII-O•–)alfa, migrated from alfa-sites, initiating new reaction cycles. At 200°C, a 4-h run provided turnover number close to 7. Methanol and dimethyl ether (DME) were the products extracted from the surface. At above 200°C, the reaction moved to conventional catalytic mode with product desorption into gas phase. Water strongly increased methanol selectivity, which attained 62% at 275°C (accounting coke). Contrary to expectations, DME was not detected among the gas-phase products being converted to coke. Comparison of quasicatalytic and catalytic data can provide new information on the reaction mechanism including a possibility of identifying potential intermediates invisible under catalytic conditions. Mechanistic scheme presenting main steps of both reaction modes was suggested