2D‐Layered Ni–MgO–Al 2 O 3 Nanosheets for Integrated Capture and Methanation of CO 2
| Autor: | Zhu Tianyang, Shicheng Cao, Deng Hu, Qun Shen, Wei Wei, Zhongjin Zhou, Baodeng Wang, Zhihua Han, Nannan Sun |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
General Chemical Engineering chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Heterogeneous catalysis 01 natural sciences Isothermal process Methane 0104 chemical sciences Catalysis chemistry.chemical_compound General Energy Adsorption Chemical engineering chemistry Methanation Desorption Environmental Chemistry General Materials Science 0210 nano-technology Carbon |
| Zdroj: | ChemSusChem. 13:360-368 |
| ISSN: | 1864-564X 1864-5631 |
| DOI: | 10.1002/cssc.201902828 |
| Popis: | CO2 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-Al2 O3 nanosheets, a two-step "capture and methanation" process is reported for the removal and utilization of CO2 , with no additional energy input for desorption being required. Continuous and nearly 100 % capture of CO2 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 CO2 reduction, providing a scalable connection between the power grid and the gas grid when H2 is used. |
| Databáze: | OpenAIRE |
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