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Non-oxidative propane dehydrogenation on CrOx/ZrO2-SiO2 catalysts: the influence of preparation methodтезисы доклада
- Авторы: Kaplin I.Yu, Gorodnova A.V., Lokteva E.S., Maslakov K.I., Golubina E.V.
- Сборник: Успехи синтеза и комплексообразования = Advances in synthesis and complexing : сборник тезисов шестой Международной научной конференции
- Тезисы
- Год издания: 2022
- Место издания: РУДН Москва
- Первая страница: 388
- Последняя страница: 388
- Аннотация: Olefins are the main feedstock for the wide range of polymer materials and valuable chemicals. However, is a difficult industrial task. The prospective production method of alkenes is catalytic dehydrogenation of light paraffins, for instance propane (propane dehydrogenation – PDH). Commercial dehydrogenation catalysts consist of Pt or CrOx particles supported on different stable oxide materials. Platinum-based systems are quite expensive and short-lived, and high chromium content in catalysts can pose risk to human health due to the possible presence of toxic Cr6+ compounds. Therefore, recent studies focus on the development of new catalytic systems with a reduced content of precious metals and chromium. Samples prepared with “one-pot” method exhibit relatively high selectivity and stability during catalytic experiments; the rate of propene formation increases almost proportionally to the Cr loading in the calcined catalysts. The catalytic properties of their counterparts, synthesized by two-step technique, do not directly proportionally depend on the chromium content, which is probably caused by different dispersion and concentration of active Cr3+ species. Detailed study by TPR-H2, Raman spectroscopy, XRD, SEM-EDX, and XPS provides explanation for the observed features.
- Добавил в систему: Каплин Игорь Юрьевич
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | Экспертное заключение | zaklyuchenie.pdf | 955,0 КБ | 29 сентября 2022 [kaplinigor] |
| 2. | Полный текст | Текст тезисов | book-of-abstracts.pdf | 1,7 МБ | 29 сентября 2022 [kaplinigor] |