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- W2086163072 abstract "The Ni catalysts supported on γ-Al 2 O 3 were synthesized by an impregnation method. Their catalytic performance in methane dry reforming was investigated. The reforming reactions were carried out in a microreactor using a CO 2 :CH 4 feed ratio of 1:1, a F/W = 2640 ml/(h·g), reaction temperatures between 500-850 (C, and at atmospheric pressure. The influence of Ca, Ce, and Zr promoters on catalyst stability, coke deposition, and the H 2 /CO ratio were also studied. Effluents were analyzed using an online gas chromatograph equipped with a thermal conductivity detector. The spent and fresh catalysts were characterized by scanning electron microscopy and thermogravimetric analysis. It was found that 3%Ni/γ-Al 2 O 3 promoted with 0.15% Ce and 0.05% Ca gave the best performance and resulted in less coke formation. The highest CH 4 and CO 2 conversion activities were found to be 94.1% and 98.3% at 850 (C, respectively. Stability tests were carried out for 130 h and this provided a H 2 yield of 91%. Moreover, the amount of formed carbon was negligible and did not increase to more than 1.5 wt%. The main reforming reaction is favored at higher reaction temperatures ( T > 641 °C) and is followed by methane cracking and carbon gasification." @default.
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- W2086163072 date "2011-09-01" @default.
- W2086163072 modified "2023-10-14" @default.
- W2086163072 title "Effects of Selected Promoters on Ni/Y-Al2O3 Catalyst Performance in Methane Dry Reforming" @default.
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- W2086163072 doi "https://doi.org/10.1016/s1872-2067(10)60267-7" @default.
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