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Influence of the composition and preparation method of molybdenum systems on their oxidizing properties in ethane conversionстатья
- Авторы: Usachev N.Ya, Kalinin V.P., Kazakov A.V., Kanaev S.A., Stakheev A.Yu
- Журнал: Russian Chemical Bulletin, Springer-Verlag GmbH
- Том: 71
- Номер: 8
- Год издания: 2022
- Первая страница: 1641
- Последняя страница: 1647
- DOI: 10.1007/s11172-022-3573-4
- Аннотация: Redox conversion of ethane at 600 C on Mo-containing oxide systems diff ering in the composition and preparation method was studied. The ethane conversion and the selectivity of the ethylene formation increase in the series of МоО3 samples supported on SiO2 (silica gel), TiO2 (anatase), and alumina. The effi ciency of the МоО3/Al2O3 systems increased when HNO3 was added to a (NH4)6Mo7O24 solution used to impregnate the support, and also when γ-Al2O3 was replaced with Al(OН)3. Gallium oxide additives improve the properties of the МоО3/Al2O3 system, increasing the ethane conversion to 44% at ethylene formation selectivity of more than 96%. The systems under consideration are characterized by high stability and retain their activity after fi ve reaction—regeneration cycles. Based on the data obtained during the reaction of ethane with the Мо systems and in the course of regeneration of the reduced samples with oxygen, the content of active oxygen corresponding to the MoO3 MoO2 transformation was assessed.
- Добавил в систему: Стахеев Александр Юрьевич