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The oxidation of CO and adsorption of hydrogen on nanocrystalline catalysts of the composition Pd/ZrO2(TiO2) prepared in sub- and supercritical waterстатья
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: 18 июля 2013 г.
- Авторы: Galkin A.A., Turakulova A.O., Lunin V.V., Grams J.
- Журнал: Russian Journal of Physical Chemistry A
- Том: 79
- Номер: 6
- Год издания: 2005
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- Первая страница: 881
- Последняя страница: 885
- Аннотация: The catalytic activity of nanocrystalline Pd/ZrO2(TiO2) samples prepared in sub- and supercritical water was studied for the oxidation of CO. The catalysts effect the complete conversion of carbon monoxide at temperatures 150-200 K lower compared with industrial Pd catalysts at equal volume rates and reaction mixture concentrations. The high activity of the nanocrystalline samples is likely caused by the presence of PdxM1-xO2 (M = Zr, Ti) solid solutions or intermetallic phases formed during the preparation of the catalysts under non-equilibrium conditions. The results obtained in studying the kinetics of hydrogen adsorption on 1% Pd/ZrO2 allow the conclusion to be drawn that intermetallic compounds or oxide solid solutions can be formed in the bulk ZrO2 phase during synthesis in supercritical water. The presence of oxide intermetallic compound hydrides of the compositions ZrPdOH2, ZrPdO2H4, and ZrPdO5H3 in the 1% Pd/ZrO2 samples treated with hydrogen was substantiated by secondary-ion time-resolved mass spectrometry.
- Добавил в систему: Turakulova Anara Onarkulovna