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2D‐Layered Ni–MgO–Al 2 O 3 Nanosheets for Integrated Capture and Methanation of CO 2
Author(s) -
Zhou Zhongjin,
Sun Nannan,
Wang Baodeng,
Han Zhihua,
Cao Shicheng,
Hu Deng,
Zhu Tianyang,
Shen Qun,
Wei Wei
Publication year - 2020
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201902828
Subject(s) - methanation , materials science , methane , carbon fibers , isothermal process , desorption , adsorption , scalability , carbon capture and storage (timeline) , chemical engineering , catalysis , process engineering , nanotechnology , computer science , chemistry , thermodynamics , ecology , physics , organic chemistry , database , climate change , biology , composite number , engineering , composite material , biochemistry
CO 2 capture is an enabling technology for carbon conversion and storage; however, the high costs of the process have hindered its large‐scale application so far. Therefore, new approaches for carbon abatement, particularly from diluted sources, are urgently needed. Herein, based on the adsorption and catalysis bifunctionality of 2D‐layered Ni–O–Al 2 O 3 nanosheets, a two‐step “capture and methanation” process is reported for the removal and utilization of CO 2 , with no additional energy input for desorption being required. Continuous and nearly 100 % capture of CO 2 was demonstrated at low temperatures (≤250 °C) and prolonged cycles. At isothermal conditions, the material could be fully regenerated with the production of methane, showing considerably higher time efficiency than temperature‐swing and pressure‐swing technologies. This strategy may pave a new way for CO 2 reduction, providing a scalable connection between the power grid and the gas grid when H 2 is used.