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Regeneration of Pd/TiO2 catalyst deactivated in reductive CCl4 transformations by the treatment with supercritical CO2, ozone in supercritical CO2 or oxygen plasmaстатья
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: 2 сентября 2016 г.
- Авторы: Lokteva Ekaterina S., Lazhko Aleksey E., Golubina Elena V., Timofeev Vadim V., Alexander V Naumkin, Yagodovskaya Tatiana V., Gaidamaka Sergey N., Lunin Valery V.
- Журнал: Journal of Supercritical Fluids
- Том: 58
- Номер: 2
- Год издания: 2011
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 263
- Последняя страница: 271
- DOI: 10.1016/j.supflu.2011.05.018
- Аннотация: Carbonaceous deposits formation was established as the primary reason of Pd/TiO2catalyst deactivation during reductive processing of CCl4 to form hydrodechlorination and oligomerization products. Three methods of carbonaceous deposits elimination were tested: (1) extraction by supercritical CO2, (2) oxidation by ozone in supercritical CO2, and (3) low-temperature glow-discharge oxygenplasmatreatment. Synchronic thermal analysis confirms effective carbonaceous deposits removal during regeneration by ozone or low temperature glow-discharge oxygenplasma; by XPS deep oxidation of surface Pd after oxidative treatment (by ozone or oxygenplasma) was found. Thus H2 reduction was proposed as the second step making possible full regeneration of initial catalytic activity of Pd/TiO2.
- Добавил в систему: Голубина Елена Владимировна