Selective carbon dioxide adsorption of ε-Keggin-type zincomolybdate-based purely inorganic 3D frameworks

Zhenxin Zhang, Masahiro Sadakane, Shin Ichiro Noro, Toru Murayama, Takashi Kamachi, Kazunari Yoshizawa, Wataru Ueda

研究成果: ジャーナルへの寄稿記事

18 引用 (Scopus)

抄録

Polyoxometalate-based 3D frameworks, Na1.5H11.4[ZnMo12O40{Zn2}]·5.5H2O and (NH4)1.5H8.5[ZnMo12O40{Zn2}]·6H2O, are synthesized in moderate yields. Rotation of the reactor under hydrothermal conditions is essential to improve the yield. The materials show zeolite-like selective molecule adsorption properties. Depending on the micropore aperture size of the materials, small molecules can be adsorbed in the materials, while large molecules cannot. The enthalpy of adsorption and DFT calculation indicate that the materials strongly interact with CO2, but weakly interact with CH4, due to electrostatic interactions between the materials and molecules. CO2/CH4 co-sorption experiments show that the materials can selectively adsorb CO2, and CO2 adsorption selectivity of the material with sodium cations is higher than that of the material with ammonium cations. The material with sodium ions can be utilized for gas chromatographic separation of CH4 and CO2. This journal is

元の言語英語
ページ(範囲)746-755
ページ数10
ジャーナルJournal of Materials Chemistry A
3
発行部数2
DOI
出版物ステータス出版済み - 1 14 2015

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Carbon Dioxide
Carbon dioxide
Adsorption
Molecules
Cations
Positive ions
Sodium
Zeolites
Coulomb interactions
Ammonium Compounds
Discrete Fourier transforms
Sorption
Enthalpy
Gases
Ions

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

これを引用

Selective carbon dioxide adsorption of ε-Keggin-type zincomolybdate-based purely inorganic 3D frameworks. / Zhang, Zhenxin; Sadakane, Masahiro; Noro, Shin Ichiro; Murayama, Toru; Kamachi, Takashi; Yoshizawa, Kazunari; Ueda, Wataru.

:: Journal of Materials Chemistry A, 巻 3, 番号 2, 14.01.2015, p. 746-755.

研究成果: ジャーナルへの寄稿記事

Zhang, Zhenxin ; Sadakane, Masahiro ; Noro, Shin Ichiro ; Murayama, Toru ; Kamachi, Takashi ; Yoshizawa, Kazunari ; Ueda, Wataru. / Selective carbon dioxide adsorption of ε-Keggin-type zincomolybdate-based purely inorganic 3D frameworks. :: Journal of Materials Chemistry A. 2015 ; 巻 3, 番号 2. pp. 746-755.
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AU - Zhang, Zhenxin

AU - Sadakane, Masahiro

AU - Noro, Shin Ichiro

AU - Murayama, Toru

AU - Kamachi, Takashi

AU - Yoshizawa, Kazunari

AU - Ueda, Wataru

PY - 2015/1/14

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AB - Polyoxometalate-based 3D frameworks, Na1.5H11.4[ZnMo12O40{Zn2}]·5.5H2O and (NH4)1.5H8.5[ZnMo12O40{Zn2}]·6H2O, are synthesized in moderate yields. Rotation of the reactor under hydrothermal conditions is essential to improve the yield. The materials show zeolite-like selective molecule adsorption properties. Depending on the micropore aperture size of the materials, small molecules can be adsorbed in the materials, while large molecules cannot. The enthalpy of adsorption and DFT calculation indicate that the materials strongly interact with CO2, but weakly interact with CH4, due to electrostatic interactions between the materials and molecules. CO2/CH4 co-sorption experiments show that the materials can selectively adsorb CO2, and CO2 adsorption selectivity of the material with sodium cations is higher than that of the material with ammonium cations. The material with sodium ions can be utilized for gas chromatographic separation of CH4 and CO2. This journal is

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