Item type |
itemtype_ver1(1) |
公開日 |
2021-10-28 |
タイトル |
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タイトル |
Development of novel nanoporous hexagonal tungsten oxide membrane for separation of water/acetic acid mixtures via pervaporation |
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言語 |
en |
著者 |
Kunishi, Hiroto
Hagio, Takeshi
Wada, Shintaro
Kamimoto, Yuki
Ichino, Ryoichi
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アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
権利 |
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言語 |
en |
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権利情報 |
© 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ |
キーワード |
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主題Scheme |
Other |
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主題 |
Nanoporous hexagonal tungsten oxide |
キーワード |
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主題Scheme |
Other |
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主題 |
Separation membrane |
キーワード |
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主題Scheme |
Other |
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主題 |
Water/acetic acid mixture |
キーワード |
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主題Scheme |
Other |
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主題 |
Pervaporation |
内容記述 |
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内容記述タイプ |
Abstract |
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内容記述 |
A novel nanoporous hexagonal tungsten oxide (NP-h-WO3) membrane was developed for separating water/acetic acid (H2O/AcOH) mixtures. The nanopores on the c-plane of h-WO3 are larger than H2O molecules and smaller than AcOH molecules and thus should allow for their effective separation. Moreover, h-WO3 exhibits high stability in acids (pH < 4). Therefore, c-axis-aligned NP-h-WO3 membranes are promising for the separation of H2O/AcOH mixtures. Given this background, we report, for the first time, the synthesis of c-plane-aligned dense NP-h-WO3 membranes on porous ceramic supports via the hydrothermal method using a precursor solution containing AcOH. The presence of AcOH and the concentration of Na2WO4 in the precursor solution are the key factors affecting crystal growth and alignment along the c-plane. A high Na2WO4 concentration is necessary for obtaining membranes with a high degree of c-plane alignment. Thus, dense, c-plane-aligned NP-h-WO3 membranes could be fabricated by precoating the support with amorphous WO3 seeds and subsequent hydrothermal synthesis in a precursor solution of Na2O/WO3/AcOH/H2O (1/1/0.88/201) at 180 °C for 24 h. The fabricated membranes exhibited a maximum separation factor of 42.6 during the pervaporation of a H2O/AcOH mixture (10/90 (w/w)) at 80 °C. Thus, these NP-h-WO3 membranes are highly suited for H2O/AcOH separation. |
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言語 |
en |
出版者 |
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出版者 |
Elsevier |
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言語 |
en |
言語 |
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言語 |
eng |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
出版タイプ |
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出版タイプ |
AM |
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出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
関連情報 |
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関連タイプ |
isVersionOf |
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識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.1016/j.memsci.2020.118860 |
収録物識別子 |
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収録物識別子タイプ |
PISSN |
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収録物識別子 |
03767388 |
書誌情報 |
en : Journal of Membrane Science
巻 620,
p. 118860,
発行日 2021-02-15
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ファイル公開日 |
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日付 |
2023-02-15 |
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日付タイプ |
Available |