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Please use this identifier to cite or link to this item: http://repository.li.mahidol.ac.th/dspace/handle/123456789/73893
Title: Simultaneous production of hydrogen and carbon nanotubes from biogas: On the design of combined process
Authors: Raminda Rattanaamonkulchai
Thunyathon Kludpantanapan
Paveenuch Nantapong
Atthapon Srifa
Wanida Koo-Amornpattana
Weerawut Chaiwat
Chularat Sakdaronnarong
Sirapassorn Kiatphuengporn
Tawatchai Charinpanitkul
Suttichai Assabumrungrat
Suwimol Wongsakulphasatch
Apiluck Eiad-ua
Masao Sudoh
Ryo Watanabe
Choji Fukuhara
Sakhon Ratchahat
Shizuoka University
King Mongkut's University of Technology North Bangkok
Chulalongkorn University
King Mongkut's Institute of Technology Ladkrabang
Thailand National Nanotechnology Center
Mahidol University
Amano Institute of Technology
Keywords: Energy;Physics and Astronomy
Issue Date: 15-Apr-2022
Citation: International Journal of Hydrogen Energy. Vol.47, No.32 (2022), 14432-14452
Abstract: We introduced a novel combined process of CO2 methanation (METH) and catalytic decomposition of methane (CDM) for simultaneous production of hydrogen (H2) and carbon nanotubes (CNTs) from biogas. In this process, biogas is catalytically upgraded into CH4-rich gas in METH reactor using Ni/CeO2 catalyst, and the obtained CH4-rich gas is subsequently decomposed into H2 and CNTs in CDM reactor over CoMo/MgO catalyst. Among the three different process scenarios proposed, the combined process with a steam condenser equipped between METH and CDM reactors could greatly improve a CNTs productivity. The CNTs production yield increased by more than 2.5-fold, maximizing at 9.08 gCNTs/gCat with a CNTs purity of 90%. The deposited carbon product was characterized as multi-walled carbon nanotubes (MWCNTs) with a surface area of 136.0 m2/g, comparable with commercial CNTs of 199.8 m2/g. The remarkable IG/ID ratio of 2.18 confirms a superior portion of graphitic carbon in the synthesized CNTs upon the commercial CNTs with IG/ID = 0.74. Notably, the CH4 conversion reached 94.5%, while the CO2 conversion achieved 100%, resulting in the H2 yield and H2 purity higher than 90%. This combined process demonstrates a promising route for production of high quality CNTs and high purity H2 with complete CO2 conversion using biogas as abundant renewable energy resources. In addition, the test of raw biogas showed no deactivation of catalyst, justifying the implementation of the developed process for real biogas without purification.
URI: http://repository.li.mahidol.ac.th/dspace/handle/123456789/73893
metadata.dc.identifier.url: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85127361918&origin=inward
ISSN: 03603199
Appears in Collections:Scopus 2022

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