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Direct and continuous conversion of flue gas CO2 into green fuels using dual function materials in a circulating fluidized bed system

Journal Article (2022)
Author(s)

Fumihiko Kosaka (National Institute of Advanced Industrial Science and Technology (AIST))

Tomone Sasayama (National Institute of Advanced Industrial Science and Technology (AIST))

Yanyong Liu (National Institute of Advanced Industrial Science and Technology (AIST))

Shih Yuan Chen (National Institute of Advanced Industrial Science and Technology (AIST))

Takehisa Mochizuki (National Institute of Advanced Industrial Science and Technology (AIST))

Koichi Matsuoka (National Institute of Advanced Industrial Science and Technology (AIST))

Atsushi Urakawa (TU Delft - ChemE/Catalysis Engineering)

Koji Kuramoto (National Institute of Advanced Industrial Science and Technology (AIST))

Research Group
ChemE/Catalysis Engineering
DOI related publication
https://doi.org/10.1016/j.cej.2022.138055
More Info
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Publication Year
2022
Language
English
Research Group
ChemE/Catalysis Engineering
Bibliographical Note
Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.@en
Volume number
450
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Abstract

Carbon capture and utilization (CCU) technologies, such as CO2 methanation, generally require energy-intensive CO2 capture and separation processes prior to catalytic CO2 conversion. In contrast, integrated CO2 capture and reduction (CCR) technologies that use dual function materials (DFM) can directly convert low-concentration CO2 in flue gas or atmosphere into high-concentration CH4 or CO. In this study, we demonstrate a circulating fluidized bed (CFB) approach to enable continuous operation of CCR. In the CFB approach, the DFM (Na/Ni/Al2O3) circulates between two bubbling fluidized beds to enable steady-state cyclic operation of (1) selective capture of CO2 in flue gas/air and (2) hydrogenation of the captured CO2. We succeeded in the continuous synthesis of CH4 with high CO2 capture efficiency (>88 %) and high H2 conversion (>85 %) yielding mainly CH4 (selectivity > 99 %) as the product at high concentration (>20 % CH4) using 2 % CO2/N2 as the model flue gas.

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