The role of chemisorbed water in formation and stabilization of active sites on Pd/Alumina oxidation catalysts; Catalysis Today; Vol. 307

The role of chemisorbed water in formation and stabilization of active sites on Pd/Alumina oxidation catalysts; Catalysis Today; Vol. 307

Detalles Bibliográficos
Parent link:Catalysis Today
Vol. 307.— 2018.— [P. 102-110]
Autores Corporativos: Национальный исследовательский Томский политехнический университет Исследовательская школа химических и биомедицинских технологий, Национальный исследовательский Томский политехнический университет Инженерная школа энергетики Научно-образовательный центр И. Н. Бутакова (НОЦ И. Н. Бутакова)
Otros Autores: Vedyagin A. A. Aleksey Anatolievich, Volodin A. M. Aleksandr, Kenzhin R. M. Roman, Stoyanovskii V. O. Vladimir, Rogov V. A. Vladimir, Kriventsov V. V. Vladimir Vladimirovich, Mishakov I. V. Iljya Vladimirovich
Sumario:Title screen
A series of Pd/Al2O3 catalysts with different palladium loading was prepared by incipient wetness impregnation method. As it was shown by various physicochemical methods, palladium at concentrations not exceeding 0.5 wt.% favors to stabilize in an atomic dispersed ionic state. Appearance of PdO phase has been firmly detected by TPR, DR UV-vis and EXAFS starting from Pd concentration of 1 wt.%. It was found that low-content Pd/Al2O3 catalysts are characterized by high activity in CO oxidation due to atomically dispersed palladium species tailored to the donor sites of the support. The presence of chemisorbed water allows one to stabilize Pd in highly disperse state thus preventing the catalyst deactivation.
Режим доступа: по договору с организацией-держателем ресурса
Lenguaje:inglés
Publicado: 2018
Materias:
электронный ресурс
труды учёных ТПУ
CO oxidation
palladium catalysts
alumina
stability
chemisorbed water
окисление
палладиевые катализаторы
глиноземы
воды
Acceso en línea:https://doi.org/10.1016/j.cattod.2017.01.033
Formato: Electrónico Capítulo de libro
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=666656
Descripción
Sumario:Title screen
A series of Pd/Al2O3 catalysts with different palladium loading was prepared by incipient wetness impregnation method. As it was shown by various physicochemical methods, palladium at concentrations not exceeding 0.5 wt.% favors to stabilize in an atomic dispersed ionic state. Appearance of PdO phase has been firmly detected by TPR, DR UV-vis and EXAFS starting from Pd concentration of 1 wt.%. It was found that low-content Pd/Al2O3 catalysts are characterized by high activity in CO oxidation due to atomically dispersed palladium species tailored to the donor sites of the support. The presence of chemisorbed water allows one to stabilize Pd in highly disperse state thus preventing the catalyst deactivation.
Режим доступа: по договору с организацией-держателем ресурса
DOI:10.1016/j.cattod.2017.01.033

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