Physicochemical characterization and catalytic properties of solid superacids based on sulfated zirconia modified with supported platinum

Physicochemical characterization and catalytic properties of solid superacids based on sulfated zirconia modified with supported platinum Научная публикация

Конференция

11th International Congress on Catalysis - 40th Anniversary
30 июн. - 5 июл. 1996 , Baltimore

Журнал

Studies in Surface Science and Catalysis
ISSN: 0167-2991

Вых. Данные

Год: 1996, Том: 101, Страницы: 821-830 Страниц : 10 DOI: 10.1016/s0167-2991(96)80293-x

Авторы

Kustov L.M. ¹ , Vasina T.V. ¹ , Ivanov A.V. ¹ , Masloboishchikova O.V. ¹ , Khelkovskaya-Sergeeva E.G. ¹ , Zeuthen P. ²

Организации

1	N.D. Zelinsky Institute of Organic Chemistry RAS
2	Haldor Topsoe A/S

The acidic properties and electronic state of platinum in superacidic catalysts based on sulfated zirconia are studied by diffuse-reflectance IR spectroscopy. The spectroscopic data indicate a positive charging of platinum microparticles due to the interaction with strong Broensted acid sites, which presumably represent delocalized protons and are characterized by a broad absorption band at ~3100 - 2950 cm-1. For the ZrO2 sample, however, it is likely that a partial negative charge is induced on the metal particle due to the influence of the ZrO2 support which reveals basic properties. The sulfated systems were shown to exhibit high activity and selectivity in n-butane isomenzation. Plausible reaction pathways and intermediates are discussed.

Kustov L.M. , Vasina T.V. , Ivanov A.V. , Masloboishchikova O.V. , Khelkovskaya-Sergeeva E.G. , Zeuthen P.
Physicochemical characterization and catalytic properties of solid superacids based on sulfated zirconia modified with supported platinum
Studies in Surface Science and Catalysis. 1996. V.101. P.821-830. DOI: 10.1016/s0167-2991(96)80293-x

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