Abstract
The dispersity and activity towards hydrogen oxidation of Pt/θ-Al2O3 catalysts prepared by supporting Pt(π-C4H7)2 and H2PtCl6 have been determined. The catalysts prepared with Pt(π-C4H7)2 possess a higher dispersity upon calcination in H2 and at 700°C, and in air at 500°C, as compared with samples prepared by impregnation. In the oxidation of hydrogen the specific catalytic activity of platinum remains constant in the particle size interval of 50–1500 Å but decreases if the particle size is decreased from 50 to 15 Å.
Abstract
Определена дисперность и активность в окислении водорода катализаторов Pt/Θ-Al2O3, полученных нанесением Pt(π-C4H7)2 и H2PtCl6. Катализаторы, полученные обработкой Pt(π-C4H7)2, обладают повышенной дисперностью при прокаливании в атмосфере H2 до 700°C и на воздухе до 500°C по сравнению с катализаторами, полученными пропиткой. В реакции окисления водорода удельная активность платины остается постоянной в интервале размеров частиц 50–1500 Å, но снижается при уменьшении величины частиц от 50 до 15 Å.
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Kimkhai, O.N., Kuznetsov, B.N., Pashkovskaya, N.A. et al. Influence of conditions of thermal treatment on the properties of catalysts Pt/θ-Al2O3 . React Kinet Catal Lett 6, 393–399 (1977). https://doi.org/10.1007/BF02070237
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DOI: https://doi.org/10.1007/BF02070237