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Copper-Exchanged Omega (MAZ) Zeolite: Copper-concentration Dependent Active Sites and its Unprecedented Methane to Methanol Conversionстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 1 августа 2019 г.
- Авторы: Knorpp Amy J., Pinar Ana B., Newton Mark A., Sushkevich Vitaly L., van Bokhoven Jeroen A.
- Журнал: ChemCatChem
- Том: 10
- Номер: 24
- Год издания: 2018
- Издательство: WILEY-VCH
- Местоположение издательства: INC, 605 THIRD AVE, NEW YORK, USA, NY, 10158-0012
- Первая страница: 5593
- Последняя страница: 5596
- DOI: 10.1002/cctc.201801809
- Аннотация: Abstract The direct conversion of methane to methanol may provide a way to utilize methane that is otherwise wasted. Here we have explored one of the most promising copper zeolite materials to date, copper-exchanged omega (MAZ) zeolite. With highly crystalline and uniform zeolite omega, we can produce 150 umol-methanol/gram-zeolite under 1 bar methane and as high as 200 umol-methanol/gram-zeolite under 30 bar methane, the highest yield ever reported. Furthermore, zeolite omega’s ability to convert methane to methanol has a distinct copper-concentration dependent behavior. At lower copper loadings, Cu–MAZ is inactive, and once a minimum copper loading is reached, Cu–MAZ converts methane to methanol more selective than the widely studied Cu-mordenite. With the unprecedented high conversion and selectivity, Cu–MAZ provides insight into the active copper phase and its mechanism which was quantified as two electrons per molecule of methanol produced.
- Добавил в систему: Сушкевич Виталий Леонидович