Rational design of defect-free carbon-silica-zirconia ceramic membrane derived from crosslinked organic structure for highly efficient gas separation
Journal of Membrane Science 709 巻
123112- 頁
2024-07-19 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Rational design of defect-free carbon-silica-zirconia ceramic membrane derived from crosslinked organic structure for highly efficient gas separation
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| 作成者 |
Niu Xinpu
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| 収録物名 |
Journal of Membrane Science
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| 巻 | 709 |
| 開始ページ | 123112 |
| 抄録 |
Carbon-SiO2-ZrO2 ceramic membranes, fabricated via in-situ carbon deposition through the calcination of organic chelating ligands (OCLs), hold great promise for use in energy-efficient gas separation process. However, fabricating a defect-free membrane poses a significant challenge. In this study, we propose a facile one-pot sol-gel combining aldimine condensation strategy to design homogeneous carbon-SiO2-ZrO2 ceramic membranes using 3-aminopropyltriethoxysilyl (APTES), zirconium (IV) tert-butoxide (ZrTB), and glyoxylic acid (GA) as precursors. The aldehyde-amine condensation between APTES and GA resulted in a crosslinked organic structure, enhancing the porosity of the membrane. The increased rigidity and orderliness reduced the migration of crosslinked organic components at elevated temperatures, leading to a uniform distribution of free carbon derived from pyrolysis. This method effectively suppresses the defect formation, thereby significantly improving the stability and separation performance of the obtained membranes. Owing to the high pore volume and uniform pore size distribution, APTES-ZrTB-GA calcined at 550 °C demonstrated a remarkable H2 permeance of 4.1 × 10−7 mol m−2 s−1 Pa−1, together with outstanding H2/CO2, H2/N2 and H2/CH4 selectivities of 13, 100 and 120, respectively. This study is expected to provide guidance for the design of defect-free carbon-SiO2-ZrO2 ceramic membranes toward more challenging separation processes.
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| 著者キーワード |
Carbon-silica-zirconia ceramic membranes
Sol-gel process
Aldimine condensation
Gas separation
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| 内容記述 |
Xinpu Niu sincerely acknowledges the financial support from the China Scholarship Council (CSC, No. 202307040023).
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| 言語 |
英語
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| 資源タイプ | 学術雑誌論文 |
| 出版者 |
Elsevier
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| 発行日 | 2024-07-19 |
| 権利情報 |
© 2024. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
This is not the published version. Please cite only the published version.
この論文は出版社版ではありません。引用の際には出版社版をご確認、ご利用ください。
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| 出版タイプ | Accepted Manuscript（出版雑誌の一論文として受付されたもの。内容とレイアウトは出版社の投稿様式に沿ったもの） |
| アクセス権 | エンバーゴ期間中 |
| 収録物識別子 |
[DOI] https://doi.org/10.1016/j.memsci.2024.123112
～の異版である
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| 備考 | The full-text file will be made open to the public on 19 July 2026 in accordance with publisher's 'Terms and Conditions for Self-Archiving' |
