Comparison of hydrogen permeation and structural properties of a microporous silica membrane and a dense BaCe0.9Y0.1O3-δ (BCY) perovskite membrane
Silica composite membranes and BaCe0.9Y0.1O3-δ (BCY) perovskite membranes were successfully synthesized to separate hydrogen in an equimolar mixture of H2, CH4, CO, and CO2 at temperature range of 500–900 °C and pressure difference of 1 bar. The phase structure of both membranes was characterized by...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-09-01
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| Series: | Results in Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590048X22000620 |
| _version_ | 1811210695980613632 |
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| author | Mahdi Amanipour Marzieh Heidari Martin Walberg |
| author_facet | Mahdi Amanipour Marzieh Heidari Martin Walberg |
| author_sort | Mahdi Amanipour |
| collection | DOAJ |
| description | Silica composite membranes and BaCe0.9Y0.1O3-δ (BCY) perovskite membranes were successfully synthesized to separate hydrogen in an equimolar mixture of H2, CH4, CO, and CO2 at temperature range of 500–900 °C and pressure difference of 1 bar. The phase structure of both membranes was characterized by X-ray diffraction (XRD). Thermogravimetric analysis (TGA) was used to evaluate phase stability of perovskite membrane. FESEM images confirmed graded structure of silica membrane and uniform, dense structure of perovskite membrane. H2 permeation in semi-dense silica layer deposited on alumina substrate indicated that permeation in top selective layer follows a diffusion mechanism which is based on jumps between solubility sites. On the other hand, low permeation rates of around 10−8 mol m−2 s−1 Pa−1 in perovskite membranes revealed a proton-electron conductivity mechanism which occurs through dense structures. Increasing hydrogen separation factor (SF) in gas mixture by increasing deposition time from 3.5 h to 6 h in silica composite membrane confirms formation of crack-free selective layer; however, this factor is still lower than SF of 0.97–0.99 in perovskite membranes. A set of gas-permeability data is collected at the laboratory scale for the statistical characterization of both membrane types (P01, S01) to provide a dataset from which one can assess statistical scaling features displayed by the data and their scaling increments. |
| first_indexed | 2024-04-12T04:59:09Z |
| format | Article |
| id | doaj.art-557f35a7f21a4d0a91121de8204da96c |
| institution | Directory Open Access Journal |
| issn | 2590-048X |
| language | English |
| last_indexed | 2024-04-12T04:59:09Z |
| publishDate | 2022-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Materials |
| spelling | doaj.art-557f35a7f21a4d0a91121de8204da96c2022-12-22T03:47:02ZengElsevierResults in Materials2590-048X2022-09-0115100314Comparison of hydrogen permeation and structural properties of a microporous silica membrane and a dense BaCe0.9Y0.1O3-δ (BCY) perovskite membraneMahdi Amanipour0Marzieh Heidari1Martin Walberg2Chemical Engineering Department, Tarbiat Modares University, Tehran, Iran; Corresponding author.Chemical Engineering and Petroleum Faculty, Sharif University of Technology, Azadi Avenue, Tehran, IranMembrane Process Laboratory, Faculty of Engineering, Research Institutes of Sweden, Lund, SwedenSilica composite membranes and BaCe0.9Y0.1O3-δ (BCY) perovskite membranes were successfully synthesized to separate hydrogen in an equimolar mixture of H2, CH4, CO, and CO2 at temperature range of 500–900 °C and pressure difference of 1 bar. The phase structure of both membranes was characterized by X-ray diffraction (XRD). Thermogravimetric analysis (TGA) was used to evaluate phase stability of perovskite membrane. FESEM images confirmed graded structure of silica membrane and uniform, dense structure of perovskite membrane. H2 permeation in semi-dense silica layer deposited on alumina substrate indicated that permeation in top selective layer follows a diffusion mechanism which is based on jumps between solubility sites. On the other hand, low permeation rates of around 10−8 mol m−2 s−1 Pa−1 in perovskite membranes revealed a proton-electron conductivity mechanism which occurs through dense structures. Increasing hydrogen separation factor (SF) in gas mixture by increasing deposition time from 3.5 h to 6 h in silica composite membrane confirms formation of crack-free selective layer; however, this factor is still lower than SF of 0.97–0.99 in perovskite membranes. A set of gas-permeability data is collected at the laboratory scale for the statistical characterization of both membrane types (P01, S01) to provide a dataset from which one can assess statistical scaling features displayed by the data and their scaling increments.http://www.sciencedirect.com/science/article/pii/S2590048X22000620HydrogenSilica membranePerovskite membraneSeparation factorPermeation |
| spellingShingle | Mahdi Amanipour Marzieh Heidari Martin Walberg Comparison of hydrogen permeation and structural properties of a microporous silica membrane and a dense BaCe0.9Y0.1O3-δ (BCY) perovskite membrane Results in Materials Hydrogen Silica membrane Perovskite membrane Separation factor Permeation |
| title | Comparison of hydrogen permeation and structural properties of a microporous silica membrane and a dense BaCe0.9Y0.1O3-δ (BCY) perovskite membrane |
| title_full | Comparison of hydrogen permeation and structural properties of a microporous silica membrane and a dense BaCe0.9Y0.1O3-δ (BCY) perovskite membrane |
| title_fullStr | Comparison of hydrogen permeation and structural properties of a microporous silica membrane and a dense BaCe0.9Y0.1O3-δ (BCY) perovskite membrane |
| title_full_unstemmed | Comparison of hydrogen permeation and structural properties of a microporous silica membrane and a dense BaCe0.9Y0.1O3-δ (BCY) perovskite membrane |
| title_short | Comparison of hydrogen permeation and structural properties of a microporous silica membrane and a dense BaCe0.9Y0.1O3-δ (BCY) perovskite membrane |
| title_sort | comparison of hydrogen permeation and structural properties of a microporous silica membrane and a dense bace0 9y0 1o3 δ bcy perovskite membrane |
| topic | Hydrogen Silica membrane Perovskite membrane Separation factor Permeation |
| url | http://www.sciencedirect.com/science/article/pii/S2590048X22000620 |
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