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dc.contributor.authorThunyathon Kludpantanapanen_US
dc.contributor.authorRaminda Rattanaamonkulchaien_US
dc.contributor.authorAtthapon Srifaen_US
dc.contributor.authorWanida Koo-Amornpattanaen_US
dc.contributor.authorWeerawut Chaiwaten_US
dc.contributor.authorChularat Sakdaronnarongen_US
dc.contributor.authorTawatchai Charinpanitkulen_US
dc.contributor.authorSuttichai Assabumrungraten_US
dc.contributor.authorSuwimol Wongsakulphasatchen_US
dc.contributor.authorPichawee Aieamsam-Aungen_US
dc.contributor.authorRyo Watanabeen_US
dc.contributor.authorChoji Fukuharaen_US
dc.contributor.authorSakhon Ratchahaten_US
dc.contributor.otherShizuoka Universityen_US
dc.contributor.otherKing Mongkut's University of Technology North Bangkoken_US
dc.contributor.otherChulalongkorn Universityen_US
dc.contributor.otherMahidol Universityen_US
dc.identifier.citationJournal of Environmental Chemical Engineering. Vol.10, No.4 (2022)en_US
dc.description.abstractIn this study, catalytic conversion of biogas into hydrogen and carbon nanotubes is investigated using an integrative process of dry reforming and methane decomposition. The catalytic improvement of cobalt catalysts promoted with various promoters: Mo, Ce, Zr, W, and Ca, is examined to discover the best combination that is resistant to a metal sintering. The addition of Mo shows an improved catalyst stability due to an enhanced metal-support interaction, avoiding metal sintering. The current process shows a remarkable CO2 conversion of 99.4% and a high CH4 conversion of 95.8%, while the gaseous products comprise of H2 up to 77%v/v at 900°C, GHSV of 4500ml/g-h. The long-term stability test for 7h shows that the catalysts promoted with Mo, Zr, and W could provide almost complete CO2 conversion at 900°C and under a high GHSV of 45,000ml/g-h. The analysis of spent catalysts shows that deposited carbon composed of well-structured multi-walled carbon nanotubes (MWCNTs) with high graphitization (IG/ID = 2.14), compared to the commercial CNTs (IG/ID = 0.74). The as-synthesized CNTs could achieve 91%w/w purity without any purification. The process test at high temperature of 1000°C, provides higher graphitization (IG/ID = 3.76) with compensation of lower yield of CNTs. This integrative process demonstrates a promising route to completely convert a renewable biogas into high-value products such as hydrogen and carbon nanotubes with less production of wastes.en_US
dc.rightsMahidol Universityen_US
dc.subjectChemical Engineeringen_US
dc.subjectEnvironmental Scienceen_US
dc.titleDevelopment of CoMo-X catalysts for production of H<inf>2</inf>and CNTs from biogas by integrative processen_US
Appears in Collections:Scopus 2022

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