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Effect of CoMo metal loading on H2 and CNTs production from biogas by integrative process
Author(s)
Aieamsam-Aung, Pichawee
Nantapong, Paveenuch
Rattanaamonkulchai, Raminda
Kludpantanapan, Thunyathon
Srifa, Atthapon
Koo-Amornpattana, Wanida
Sakdaronnarong, Chularat
Suchamalawong, Phorndranrat
Reubroycharoen, Prasert
Kiatphuengporn, Sirapassorn
Charinpanitkul, Tawatchai
Assabumrungrat, Suttichai
Wongsakulphasatch, Suwimol
Watanabe, Ryo
Fukuhara, Choji
Ratchahat, Sakhon
Date Issued
December 19, 2022
Type
Article
Abstract
Effect of CoMo metal loading to MgO (1, 5, 30 and 50 wt%) on conversion of biogas by an integrative process was investigated at 900 °C under atmospheric pressure. The integrative process combines the direct methanation of CO2 in biogas and the CH4 decomposition to upgrade biogas to CH4 and decompose to hydrogen and carbon nanotubes. Methane dissociative reaction is governed by the concentration of active metals on the catalyst surface, while DRM reaction is suppressed. The 30 wt%CoMo catalyst shows the optimal loading for production of high-purity H2 (>90v/v%) and high yield of MWCNTs (2.33 gCNT/gCat-h) with 100%CO2 conversion and 95%CH4 conversion. Meanwhile, 1 wt%CoMo catalyst provided the single-walled CNTs with diameter of 2.5 nm, high surface area of 165 m2/g and high graphitization of IG/ID = 6.14.
Citation
International Journal of Hydrogen Energy, 47(98), 41444-41460, 2022