Regularities of Oxidative Dehydrogenation of Ethane Over MoVNbTeOx Catalyst Under Supercritical Conditions

Авторы: Mishanin I.I., Bogdan V.I.
Журнал: Catalysis Letters
Год издания: 2020
Издательство: Springer Nature
Местоположение издательства: Switzerland
DOI: 10.1007/s10562-020-03442-2
Аннотация: One of the most active and high-selective catalytic systems for oxidative dehydrogenation of ethane is the MoVNbTeOx catalyst. However, this catalytic system has the low thermal stability and is prone to deactivation at temperatures above 350 °C. At the first time it was proposed to use oxygen ((Tcr = –119 °C, Pcr = 48 atm) and ethane (Tcr = 32 °C, Pcr = 51 atm) in supercritical state in the oxidative dehydrogenation process. Carrying out the process at supercritical conditions (T = 240–300 °C, P = 60–100 atm) leads to high selectivity up to 90% for ethylene under growth conversion of ethane and oxygen. At the same time, it manages to keep M1 phase crystallinity unchanged throughout the experiment (more than 40 h).
Добавил в систему: Богдан Виктор Игнатьевич

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