Oxidative carbonylation of methane to acetic acid over micro-mesoporous rhodium-modified zeolites

Kolesnichenko, N.V.; Snatenkova, Y.M.; Batova, T.I.; Yashina, O.V.; Golubev, K.B.

Статья опубликована в высокорейтинговом журнале

Информация о цитировании статьи получена из Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 8 декабря 2021 г.

Авторы: Kolesnichenko Natalia V., Snatenkova Yulia M., Batova Tatiana I., Yashina Olga V., Golubev Konstantin B.
Журнал: Microporous and Mesoporous Materials
Том: 330
Год издания: 2022
Издательство: Elsevier BV
Местоположение издательства: Netherlands
Первая страница: 1
Последняя страница: 7
Номер статьи: 111581
DOI: 10.1016/j.micromeso.2021.111581
Аннотация: It was first demonstrated that under liquid-phase conditions, an increase in the mesoporosity of ZSM-5 zeoliteboosts a rhodium-containing catalyst activity in the oxidative carbonylation of methane to acetic acid (the aceticacid yield is 570 μmol gcat􀀀 1). To increase the mesoporosity of zeolite, two approaches were used: ultrasonictreatment and desilication of zeolite. The ultrasonic pretreatment leads to an increase in the acetic acid yieldwith a decrease in the total yield of oxygenates (methanol/acetic acid molar ratio is 0.2). On the contrary,preliminary desilication contributes to an increase in the total yield of oxygenates, mainly due to methanol(methanol/acetic acid molar ratio is 1.8). The combination of ultrasonic pretreatment and desilication of zeoliteimproves the total yield of oxygenates with an increase in the acetic acid yield. Such a change in the catalyticproperties is attributed both to the acidity of the parent zeolite and the local atomic environment of rhodium.XAS spectroscopy showed that rhodium can be present on the zeolite surface either as nanoclusters giving rise tomethanol or as isolated rhodium atoms, which promote the acetic acid formation.
Добавил в систему: Голубев Константин Борисович

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Oxidative carbonylation of methane to acetic acid over micro-mesoporous rhodium-modified zeolitesстатья

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