The main factors controlling generation of synthetic natural gas by methanation of synthesis gas in the presence of sulfur-resistant Mo-based catalysts |
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Authors: | Zhenhua Li Haiyang Wang Erdong Wang Jing Lv Yuguang Shang Guozhong Ding Baowei Wang Xinbin Ma Shaodong Qin Qi Su |
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Affiliation: | 1. Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China 2. National Institute of Clean-And-Low-Carbon Energy, Beijing, 102209, China
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Abstract: | The Co-Mo-Al and Co-Mo-Ce-Al catalysts were prepared and tested for their activity in the methanation of synthesis gas in the presence of hydrogen sulfide. The results showed that the Co-Mo-Ce-Al series was superior to the Co-Mo-Al system in terms of CO conversion. The former system was used to examine the main factors controlling the methanation behavior. Among these are: H2S concentration in the reaction mixture, reaction temperature and pressure, concentrations of CO2, CH4, and H2O, H2/CO ratio, and gaseous hourly space velocity. The methanation activity increased with increasing temperature, pressure and H2/CO ratio. The reason why adding CO2 or H2O decreases the methanation activity is discussed. |
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