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Effects of additional metals on catalyst life of vanadium-containing high silica zeolites in methanol to hydrocarbon conversion

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Abstract

Catalyst life of vanadium-containing high silica zeolites having the ZSM-5 structure was greatly affected by an additional metal incorporated into the crystal. Chromium ion was effective to increase the catalyst life, while zirconium ion decreased it significantly. Temperature-programmed desorption spectra of NH3 revealed a correlation between the catalyst life and the number of strong acid sites, suggesting that the additional metal affects the catalyst life by changing the number of strong acid sites.

Abstract

На каталитическое поведение ванадийсодержащих кремневых цеолитов, обладающих структурой ZSM-5, сильно влияют добавки металлов, встраивающихся в кристалл. Ион хрома увеличивает продолжительность действия катализатора, в то время как ион циркония значительно уменьшает. Спектры ТПД NH3 свидетельствуют о корреляции между жизнью катализатора и числом сильных кислых центров, полагая, полагая, что добавки металла влияют на жизнь катализаторо за счет изменения числа сильных кислых центров.

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Authors and Affiliations

  1. Department of Hydrocarbon Chemistry, Faculty of Engineering, Kyoto University, Sakyo-ku, 606, Kyoto, Japan

    T. Inui, D. Medhanavyn & A. Miyamoto

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  1. T. Inui
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  2. D. Medhanavyn
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  3. A. Miyamoto
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Inui, T., Medhanavyn, D. & Miyamoto, A. Effects of additional metals on catalyst life of vanadium-containing high silica zeolites in methanol to hydrocarbon conversion. React Kinet Catal Lett 34, 69–74 (1987). https://doi.org/10.1007/BF02069203

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  • DOI: https://doi.org/10.1007/BF02069203

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