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کاتالیزور کاربردی a: عمومی 2012
جزئیات رویداد
اینستاگرام تی پی بین
همایش ، رویداد ، ژورنال
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  • synthesis gas production to desired hydrogen to carbon monoxide ratios by tri-reforming of methane using ni–mgo–(ce,zr)o2 catalysts

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    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 990
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     this paper highlights the performance of ni–mgo–(ce,zr)o2 tri-reforming catalysts under various reaction conditions and explains results using catalyst characterization. testing under controlled reaction conditions and the use of several catalyst characterization techniques (bet, xrd, tpr, sem-eds, and xps) were employed to better explain the effects of the synthesis parameters on the reaction performances. the support ce:zr ratio, metal loading techniques, metal wt%, and ni:mg ratios all had a pronounced influence on the catalyst performance. an even ratio of ce:zr for the support and an even ratio of ni:mg gave the best performance. the wet impregnation method consistently showed more resistance to coke formation when compared to the deposition precipitation method, but the difference was attributed to a better ability to load mg by wet impregnation. lower than previously reported h2o concentrations in the feed gas composition also led to desired h2:co ratios needed for ft synthesis while maintaining high conversions of co2 and resistance to coke formation. high ghsv (61,000 h−1) yielded significantly higher h2:co ratios when compared to reactions run at lower ghsv (25,000 h−1). these results suggest that steam reforming reactions are kept further from equilibrium at higher ghsv and result in higher h2 production. the tested tri-reforming catalyst produced desired h2:co ratios with minimal deactivation, high reactant conversions, and extended catalyst lifetime.

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