• preferential co oxidation in hydrogen (prox) on unsupported ptsn catalyst

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    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 1038
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     prox reaction was studied over an unsupported ptsn catalyst. co2 and h2o were produced from a h2flow containing 1% co, and 0.4–2% o2. ptsn pretreated with o2 and h2 contained more pt in the near-surface region and was more active towards co oxidation than a sample pretreated in h2 only. in situ xps was also carried out during prox reaction. sn 3d indicated the presence of sn-oxides, near to the surface region, along with pt3sn. pt 4f peak showed metallic pt under all conditions. water and oh enrichment was observed in the o 1s spectrum, taken during prox reaction.

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