EFFECT OF REDUCTION CONDITIONS ON THE ACTIVITY OF Ni/γAl2O3 CATALYST FOR METHANATION REACTION |
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Authors: | Mazen A. Shalabi Sameen A. Zaidi MUHAMMAD A. Al-SALEH |
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Affiliation: | a Chemical Engineering Department, King Fahd University of Petroleum & Minerals, Dhahran, Saudi Arabia |
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Abstract: | The effect of reduction conditions, mainly reduction temperature and duration time on the activity of Ni/γAl2O3 catalyst were studied for a methanation reaction in a gradientless Berty reactor. The methanation reaction was investigated using a feed containing CO (6.7 mole%), H2 (26 mole%) and the balance being nitrogen at a pressure of 30 psig and a fixed temperature of 350°C. The reduction temperature was varying from 250 to 500°C, in order to investigate its effect on the methanation reaction. The methanation activity of the catalyst increased to a maximum by increasing the reduction temperature up to a maximum at 300-350°C and showed a slight negative decline afterward. The second parameter investigated was reduction duration time which was varied from 2 to 16 hours. It was observed that the methanation reaction activity increased by increasing the reduction duration time up to 6 hours. After six hours, there was no increase in activity. Based on the finding of this investigation, a recommended set of reduction conditions is given: reduction temperature of 300°C and a duration time of six hours. |
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Keywords: | Methanation nickel reduction conditions |
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