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کاتالیزور کاربردی a: عمومی 2012
جزئیات رویداد
همایش ، رویداد ، ژورنال
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  • precursor influence and catalytic behaviour of ni/ceo2 and ni/sic catalysts for the tri-reforming process

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    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 978
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     the aim of the work described here is to evaluate the catalytic performance in the tri-reforming process of ni/ceo2 and ni/β-sic catalysts prepared by using four different nickel salts (nitrate, acetate, chloride and citrate). metal particles supported over ceria had bigger particle sizes (leading to lower metal-support interactions) than those supported on β-sic. it was also demonstrated that the metal salt used in the preparation of ni-based catalysts had a marked influence on the size of the nickel particles. larger particles with a worse catalytic behaviour were obtained when nickel chloride and nickel citrate were used as the precursors of ni supported species. methane consumption rate and h2/co ratio in the effluents were influenced by the type of support and salt precursor used in the preparation of the catalysts. co2-tpd proved that catalysts based on ceria as the support presented more basic sites, which was related to a decrease of the h2/co molar ratio in the effluents coming from the reactor. high methane consumption rate and good catalytic stability were obtained when nickel nitrate and nickel acetate were used to prepare ni/β-sic catalysts. the results showed that these latter catalysts can be considered as promising ones for the tri-reforming process.

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