کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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228476 | 464841 | 2011 | 5 صفحه PDF | دانلود رایگان |
Oxidative carbon dioxide reforming of methane to synthesis gas over alumina-supported Ni catalysts was investigated at atmospheric pressure. The reforming reactions were carried out using a CO2 to CH4 feed ratio of one and reaction temperatures in the range 600–800 °C. The activity and stability of the catalyst, carbon deposition, and synthesis gas (H2/CO) ratio were determined. Catalyst deactivation was primarily due to coke formation. energy dispersive spectroscopy (EDS), scanning electron microscopy (SEM) and thermo-gravimetric/differential analyzer (TG/DTA) techniques were used to confirm carbon deposition. It was observed that increasing the oxygen feed concentration and/or reaction temperatures, enhanced methane conversion and reduced coke formation. When 20% O2 feed was used at 800 °C, catalyst stability test revealed a 99.7% CH4 conversion, 1.0% CH4 conversion drop and 1% carbon formation.
Journal: Journal of Industrial and Engineering Chemistry - Volume 17, Issue 3, 25 May 2011, Pages 479–483