Co-production of hydrogen and fibrous carbons by methane decomposition using K2CO3/carbon hybrid as the catalyst. (20th April 2017)

• Record Type: Journal Article
• Authors: Zhang, Jianbo; Qi, Meng; Zhang, Guorong; Hu, Haoquan; Xie, Liangcai; Ma, Xiaoxun
• Is Part Of: International journal of hydrogen energy. Volume 42:Number 16(2017)
• Page Start: 11047
• Page End: 11052
• Publication Date: 2017-04-20
• Subjects: Methane -- Hydrogen -- Carbon -- K2CO3 -- Decomposition; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2017.03.113
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Methane decomposition was conducted by using K2 CO3 /carbon hybrids as the catalysts, and hydrogen-rich gas (with hydrogen content of about 87%) and fibrous carbons can be simultaneously obtained together with high and stable methane conversion (up to about 90% at 850 °C). Effects of K2 CO3 on methane conversion, hydrogen content and fibrous carbons were investigated by changing the reaction temperature and space velocity. The results indicate that K2 CO3 can greatly promote methane activation and conversion, taking responsibility for the continuous formation of CO and a trace of CO2 . The oxygen transfer from K2 CO3 probably provides convenience for the formation and growth of fibrous carbons. Highlights: K2 CO3 /carbon hybrid was used as a catalyst of methane decomposition. Co-production of hydrogen and fibrous carbon was obtained by methane decomposition. K2 CO3 plays a positive role on methane activation and conversion. The oxygen transfer from K2 CO3 may help formation and growth of the fibrous carbon.