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A highly active and stable Co4N/gamma-Al2O3 catalyst for CO and CO2 methanation to produce synthetic natural gas (SNG)
Alternative TitleChem. Eng. J.
Razzaq, R.; Li, C. S.; Usman, M.; Suzuki, K.; Zhang, S. J.
2015
Source PublicationChemical Engineering Journal
IssueFEBPages:1090-1098
AbstractCo4N/gamma-Al2O3 and Co/gamma-Al2O3 catalysts with different metal loadings were prepared by NH3 and H-2-temperature programmed reaction method for the co-methanation of carbon oxides (CO and CO2). The catalysts were characterized by N-2 adsorption-desorption, XRD, XPS, TEM-SAED, H-2, CO, and CO2-TPD techniques. Results showed that the Co4N catalysts had higher activity than Co metal-supported catalysts due to their enhanced adsorption capacity, uniform metal dispersion, and superior metal-support interaction. Among the catalysts studied, 20Co(4)N/gamma-Al2O3 catalyst with 20 wt% metal loading showed the best performance. This catalyst achieved higher activity for CH4 formation between 200 and 300 degrees C and maintained high product selectivity (>= 98%). A 250 h stability test for 20Co(4)N/gamma-Al2O3 was also conducted at 350 degrees C and increased gas hourly space velocity (GHSV; 10,000 h(-1)). The spent catalyst was further characterized using XRD, TEM, and TGA analysis. Results revealed that the catalyst was highly resistant to metal sintering and carbon deposition, whereas high CO and CO2 conversion and CH4 selectivity were maintained even at a higher GHSV. (C) 2014 Elsevier B.V. All rights reserved.
KeywordCo And Co2 Co-methanation Cobalt Nitride Catalyst Stability Carbon Deposition Molybdenum Nitride Catalysts Transition-metal Nitrides Oven Gas Temperature Methanation Selective Methanation Surface-properties Fluidized-bed Reduction Reactor Syngas
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Language英语
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/11817
Collection研究所(批量导入)
Recommended Citation
GB/T 7714
Razzaq, R.,Li, C. S.,Usman, M.,et al. A highly active and stable Co4N/gamma-Al2O3 catalyst for CO and CO2 methanation to produce synthetic natural gas (SNG)[J]. Chemical Engineering Journal,2015(FEB):1090-1098.
APA Razzaq, R.,Li, C. S.,Usman, M.,Suzuki, K.,&Zhang, S. J..(2015).A highly active and stable Co4N/gamma-Al2O3 catalyst for CO and CO2 methanation to produce synthetic natural gas (SNG).Chemical Engineering Journal(FEB),1090-1098.
MLA Razzaq, R.,et al."A highly active and stable Co4N/gamma-Al2O3 catalyst for CO and CO2 methanation to produce synthetic natural gas (SNG)".Chemical Engineering Journal .FEB(2015):1090-1098.
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