کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
50745 | 46812 | 2011 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Cs-promoted Ni/Fe catalyst as a Cr-free, high temperature shift catalyst for steam methane reformate without additional supply of steam Cs-promoted Ni/Fe catalyst as a Cr-free, high temperature shift catalyst for steam methane reformate without additional supply of steam](/preview/png/50745.png)
The goal of this study was to investigate the Cs-promoted Ni/Fe catalysts for high temperature shift reaction. The performance of all the catalysts was evaluated at 400 °C and 75,000 ml/gcat h under the reactant composition: 56.7% H2, 10% CO, 26.7% H2O, and 6.7% CO2, assuming gas production from the steam methane reformer at a H2O/CH4 ratio = 3 with 100% CH4 conversion and with no extra steam added for the protection of the catalyst. The Cs/Ni/Fe (Ni:Fe = 34:66; weight ratio) catalysts of 3.9–6.0 Cs wt.% showed excellent CO removal activities and suppressed the progress of methanation effectively. This performance was related to the increment of amount in weakly basic sites through Cs promotion.
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► Cs-promoted and unpromoted Ni/Fe catalysts were tested for HTS reactions.
► The reactant simulates the steam methane reformate assuming no additional steam.
► The Cs-promoted Ni/Fe catalyst demonstrated a high CO removal performance.
► Methanation was suppressed effectively by Cs promotion.
► The improved performance was attributed to the increase in amount of weakly basic sites.
Journal: Catalysis Communications - Volume 15, Issue 1, 15 November 2011, Pages 37–40