DOI: 10.1016/j.jcou.2017.11.016
Scopus记录号: 2-s2.0-85040313182
论文题名: A novel application of α- and β-sodium ferrite as a CO2-capturing solid in air with water vapor
作者: Yanase I. ; Onozawa S. ; Ogasawara K. ; Kobayashi H.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 24 起始页码: 200
结束页码: 209
语种: 英语
英文关键词: CO2
; pH
; Sodium ferrite
; Water vapor
Scopus关键词: Adsorption
; Carbon dioxide
; Ferrite
; Fourier transform infrared spectroscopy
; Iron compounds
; Molecules
; pH
; Sodium
; Thermogravimetric analysis
; Water vapor
; X ray diffraction analysis
; Adsorption of water
; Basic solutions
; CO2 adsorption
; CO2 concentration
; Distilled water
; Novel applications
; Reaction ratio
; X-ray photo
; Sodium compounds
英文摘要: The CO2 adsorption properties of synthesized sodium ferrites (α-NaFeO2 and β-NaFeO2) under air and CO2 flows with various relative humidity (RH) were investigated. Thermogravimetry (TG) analysis showed the CO2 adsorption reactions of α- and β-NaFeO2 were promoted even at room temperature (RT) by increasing RH even in air with a low CO2 concentration and the CO2 reaction ratio of β-NaFeO2 was larger than that of α-NaFeO2. X-ray photo spectroscopy (XPS), X-ray diffractometry (XRD), and Fourier transform infrared spectroscopy (FTIR) clarified that Na2CO3·H2O and NaHCO3 were produced under air and CO2 flows, respectively, and Na1-xFeO2 and α-Fe2O3 were produced for α- and β-NaFeO2 after the CO2 adsorption, respectively. The Na+ concentration and pH were rapidly increased by dispersing NaFeO2 into distilled water. It was therefore found that a basic solution was formed on the surface of NaFeO2 by the adsorption of water molecules on the surface, giving rise to the promotion of CO2 adsorption of NaFeO2 at as low as RT in atmospheres with low CO2 concentrations. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111931
Appears in Collections: 气候减缓与适应
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作者单位: Saitama University, Faculty of Engineering, Department of Applied Chemistry, 255 Shimoohkubo, Sakura-ku, Saitama-shi, Saitama, 338-8570, Japan
Recommended Citation:
Yanase I.,Onozawa S.,Ogasawara K.,et al. A novel application of α- and β-sodium ferrite as a CO2-capturing solid in air with water vapor[J]. Journal of CO2 Utilization,2018-01-01,24