Unravelling the Mechanism of Intermediate-Temperature CO2 Interaction with Molten-NaNO3-Salt-Promoted MgO
文献类型：期刊论文
| 作者 | Gao, Wanlin5; Xiao, Jiewen5; Wang, Qiang5; Li, Shiyan4; Vasiliades, Michalis A.3; Huang, Liang5; Gao, Yanshan5; Jiang, Qian4; Niu, Yiming2; Zhang, Bingsen2 |
| 刊名 | ADVANCED MATERIALS
 |
| 出版日期 | 2021-12-06 |
| 页码 | 12 |
| ISSN号 | 0935-9648 |
| 关键词 | CO (2) capture energy barriers MgO-based adsorbents MgO carbonation surface defects |
| DOI | 10.1002/adma.202106677 |
| 通讯作者 | Wang, Qiang(qiangwang@bjfu.edu.cn) ; Liu, Yuefeng(yuefeng.liu@dicp.ac.cn) ; Efstathiou, Angelos M.(efstath@ucy.ac.cy) |
| 英文摘要 | The optimization of MgO-based adsorbents as advanced CO2-capture materials is predominantly focused on their molten-salt modification, for which theoretical and experimental contributions provide great insights for their high CO2-capture performance. The underlying mechanism of the promotion effect of the molten salt on CO2 capture, however, is a topic of controversy. Herein, advanced experimental characterization techniques, including in situ environmental transmission electron microscopy (eTEM) and CO2 chemisorption by diffuse-reflectance infrared Fourier transform spectroscopy (DRIFTS), transient O-18-isotopic exchange, and density functional theory (DFT), are employed to elucidate the mechanism of the CO2 interaction with molten-salt-modified MgO in the 250-400 degrees C range. Herein, eTEM studies using low (2-3 mbar) and high (700 mbar) CO2 pressures illustrate the dynamic evolution of the molten NaNO3 salt promoted and unpromoted MgO carbonation with high magnification (<50 nm). The formation of O-18-NaNO3 (use of O-18(2)) and (COO)-O-16-O-18 following CO2 interaction, verifies the proposed reaction path: conversion of NO3- (NO3- -> NO2+ + O2-), adsorption of NO2+ on MgO with significant weakening of CO2 adsorption strength, and formation of [Mg2+ horizontal ellipsis O2-] ion pairs preventing the development of an impermeable MgCO3 shell, which largely increases the rate of bulk MgO carbonation. |
| 资助项目 | National Natural Science Foundation of China[42075169] ; National Natural Science Foundation of China[U1810209] ; National Natural Science Foundation of China[21872144] ; National Natural Science Foundation of China[21972140] ; LiaoNing Revitalization Talents Program[XLYC1907053] ; CAS Youth Innovation Promotion Association[2018220] ; University of Cyprus |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| WOS记录号 | WOS:000727236000001 |
| 资助机构 | National Natural Science Foundation of China ; LiaoNing Revitalization Talents Program ; CAS Youth Innovation Promotion Association ; University of Cyprus |
| 源URL | [http://ir.imr.ac.cn/handle/321006/167562]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Wang, Qiang; Liu, Yuefeng; Efstathiou, Angelos M. |
| 作者单位 | 1.Chinese Acad Sci, Lab Atmospher Environm & Pollut Control, Res Ctr EcoEnvironm Scien, Beijing 100085, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci SYNL, Shenyang 110016, Peoples R China 3.Univ Cyprus, Heterogeneous Catalysis Lab, Chem Dept, 1 Univ Ave,Univ Campus, CY-2109 Nicosia, Cyprus 4.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China 5.Beijing Forestry Univ, Coll Environm Sci & Engn, 35 Qinghua East Rd, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao, Wanlin,Xiao, Jiewen,Wang, Qiang,et al. Unravelling the Mechanism of Intermediate-Temperature CO2 Interaction with Molten-NaNO3-Salt-Promoted MgO[J]. ADVANCED MATERIALS,2021:12. |
| APA | Gao, Wanlin.,Xiao, Jiewen.,Wang, Qiang.,Li, Shiyan.,Vasiliades, Michalis A..,...&Efstathiou, Angelos M..(2021).Unravelling the Mechanism of Intermediate-Temperature CO2 Interaction with Molten-NaNO3-Salt-Promoted MgO.ADVANCED MATERIALS,12. |
| MLA | Gao, Wanlin,et al."Unravelling the Mechanism of Intermediate-Temperature CO2 Interaction with Molten-NaNO3-Salt-Promoted MgO".ADVANCED MATERIALS (2021):12. |
入库方式： OAI收割
来源：金属研究所
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