Title |
A hybrid absorption–adsorption method to efficiently capture carbon
|
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Published in |
Nature Communications, October 2014
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DOI | 10.1038/ncomms6147 |
Pubmed ID | |
Authors |
Huang Liu, Bei Liu, Li-Chiang Lin, Guangjin Chen, Yuqing Wu, Jin Wang, Xueteng Gao, Yining Lv, Yong Pan, Xiaoxin Zhang, Xianren Zhang, Lanying Yang, Changyu Sun, Berend Smit, Wenchuan Wang |
Abstract |
Removal of carbon dioxide is an essential step in many energy-related processes. Here we report a novel slurry concept that combines specific advantages of metal-organic frameworks, ion liquids, amines and membranes by suspending zeolitic imidazolate framework-8 in glycol-2-methylimidazole solution. We show that this approach may give a more efficient technology to capture carbon dioxide compared to conventional technologies. The carbon dioxide sorption capacity of our slurry reaches 1.25 mol l(-1) at 1 bar and the selectivity of carbon dioxide/hydrogen, carbon dioxide/nitrogen and carbon dioxide/methane achieves 951, 394 and 144, respectively. We demonstrate that the slurry can efficiently remove carbon dioxide from gas mixtures at normal pressure/temperature through breakthrough experiments. Most importantly, the sorption enthalpy is only -29 kJ mol(-1), indicating that significantly less energy is required for sorbent regeneration. In addition, from a technological point of view, unlike solid adsorbents slurries can flow and be pumped. This allows us to use a continuous separation process with heat integration. |
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Unknown | 3 | 75% |
Demographic breakdown
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Mendeley readers
Geographical breakdown
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India | 1 | <1% |
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Unknown | 199 | 98% |
Demographic breakdown
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Researcher | 29 | 14% |
Student > Master | 25 | 12% |
Student > Doctoral Student | 14 | 7% |
Professor | 9 | 4% |
Other | 29 | 14% |
Unknown | 46 | 23% |
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Engineering | 32 | 16% |
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Materials Science | 6 | 3% |
Energy | 5 | 2% |
Other | 16 | 8% |
Unknown | 66 | 33% |