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Received February 20, 2020
Accepted May 27, 2020
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Effect of reducibility on the performance of Co-based catalysts for the production of high-calorie synthetic natural gas
Tae Young Kim
Seong Bin Jo1
Chul Ho Lee2
Suk-Hwan Kang3
Joon Woo Kim4
Soo Chool Lee1†
Jae Chang Kim†
Department of Chemical Engineering, Kyungpook National University, Daegu 41566, Korea 1Research Institute of Advanced Energy Technology, Kyungpook National University, Daegu 41566, Korea 2Korea Institute of Industrial Technology, Ulsan 44413, Korea 3Institute for Advanced Engineering, Yongin 41718, Korea 4Research Institute of Industrial Science and Technology, Pohang 37673, Korea
soochool@knu.ac.kr
Korean Journal of Chemical Engineering, October 2020, 37(10), 1690-1698(9), 10.1007/s11814-020-0588-0
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Abstract
Co-based catalysts were developed for the production of high-calorie synthetic natural gas. The Co reduction in Al2O3- and SiO2-supported catalysts prepared with different Co loading, and their catalytic properties for highcalorie methanation were investigated. The CO conversion of the Co/SiO2 catalysts was superior to that of the Co/ Al2O3 with the same Co loading, due to their better reducibility at 400 °C. The activities of both the Al2O3 and SiO2- supported catalysts increased with Co loading, while the growth of hydrocarbon chains decreased as the Co loading increased. As the reduction temperature increased, crystallite size of Co increased in 10 Co/SiO2, resulting in decrease of CO conversion and increase of C2+ selectivity. The highest CO conversion (98.7%) was obtained over 10Co/SiO2 reduced at 400 °C. Moreover, the heating value of the product gas (10,405 kcal/Nm3) exceeded the standard heating value without requiring a high reduction temperature (700 °C) or a noble metal (Ru).
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References
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Oh JH, Bae JW, Park SJ, Khanna PK, Jun KW, Catal. Lett., 130(3-4), 403 (2009)
Park KS, Saravanan K, Park SJ, Lee YJ, Jeon KW, Bae JW, Catal. Sci. Technol., 7, 4079 (2017)
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Ma WP, Ding YJ, Lin LW, Ind. Eng. Chem. Res., 43(10), 2391 (2004)
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Medina C, Garcia R, Reyes P, Fierro JLG, Escalona N, Appl. Catal. A: Gen., 373(1-2), 71 (2010)
