• جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 1084
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     the reaction of nitrite (no2 ) and nitrate (no3 ) on nanometer-sized fes particles was investigated in alkaline (initial ph = 10.3) solutions at reaction temperatures of 22, 70, and 120 °c using in situ attenuated total reflection fourier transform infrared spectroscopy (atr-ftir) and fluorescence spectroscopy that allowed an analysis of adsorbate complexation on the fes and reaction product in the aqueous phase, respectively. atr-ftir showed that no was a surface-bound intermediate on fes during its exposure to no2  at all three reaction temperatures. ammonia/ammonium (nh3/nh4+) product was also produced when fes was exposed to no2  at the 70 °c and 120 °c reaction temperatures. activation of no3  to form surface-bound no was experimentally observed to occur at 120 °c on fes, but not at the lower reaction temperatures. furthermore, nh3/nh4 + product in the aqueous phase was only present during the reaction of fes with no3  at the highest temperature used in this study.

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