Exploring Hydrothermal Synthesis of SAPO-18 under High Hydrostatic Pressure
The effect of external hydrostatic pressure on the hydrothermal synthesis of the microporous silicoaluminophosphate SAPO-18 has been explored. The crystallization of the SAPO-18 phase is inhibited at 150 °C under high pressures (200 MPa) when using relatively diluted synthesis mixtures. On the contr...
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MDPI AG
2022-01-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/3/396 |
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| author | Raquel Simancas Masamori Takemura Yasuo Yonezawa Sohei Sukenaga Mariko Ando Hiroyuki Shibata Anand Chokkalingam Kenta Iyoki Tatsuya Okubo Toru Wakihara |
| author_facet | Raquel Simancas Masamori Takemura Yasuo Yonezawa Sohei Sukenaga Mariko Ando Hiroyuki Shibata Anand Chokkalingam Kenta Iyoki Tatsuya Okubo Toru Wakihara |
| author_sort | Raquel Simancas |
| collection | DOAJ |
| description | The effect of external hydrostatic pressure on the hydrothermal synthesis of the microporous silicoaluminophosphate SAPO-18 has been explored. The crystallization of the SAPO-18 phase is inhibited at 150 °C under high pressures (200 MPa) when using relatively diluted synthesis mixtures. On the contrary, the use of concentrated synthesis mixtures allowed SAPO-18 to be obtained in all the studied conditions. The obtained solids were characterized with XRD, SEM, ICP-AES, TG and <sup>27</sup>Al and <sup>31</sup>P MAS NMR spectroscopy. The results highlight the importance of the external pressure effect on the hydrothermal synthesis of molecular sieves and its influence on the interaction between the organic molecule and the silicoaluminophosphate network. |
| first_indexed | 2024-03-09T23:24:44Z |
| format | Article |
| id | doaj.art-be4c976d2a5e48d594f3ca872557ce9e |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T23:24:44Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-be4c976d2a5e48d594f3ca872557ce9e2023-11-23T17:20:06ZengMDPI AGNanomaterials2079-49912022-01-0112339610.3390/nano12030396Exploring Hydrothermal Synthesis of SAPO-18 under High Hydrostatic PressureRaquel Simancas0Masamori Takemura1Yasuo Yonezawa2Sohei Sukenaga3Mariko Ando4Hiroyuki Shibata5Anand Chokkalingam6Kenta Iyoki7Tatsuya Okubo8Toru Wakihara9Institute of Engineering Innovation, The University of Tokyo, Tokyo 113-8656, JapanDepartment of Chemical System Engineering, The University of Tokyo, Tokyo 113-8656, JapanInstitute of Engineering Innovation, The University of Tokyo, Tokyo 113-8656, JapanInstitute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, JapanGraduate School of Engineering, Tohoku University, Sendai 980-8579, JapanInstitute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, JapanInstitute of Engineering Innovation, The University of Tokyo, Tokyo 113-8656, JapanDepartment of Chemical System Engineering, The University of Tokyo, Tokyo 113-8656, JapanDepartment of Chemical System Engineering, The University of Tokyo, Tokyo 113-8656, JapanInstitute of Engineering Innovation, The University of Tokyo, Tokyo 113-8656, JapanThe effect of external hydrostatic pressure on the hydrothermal synthesis of the microporous silicoaluminophosphate SAPO-18 has been explored. The crystallization of the SAPO-18 phase is inhibited at 150 °C under high pressures (200 MPa) when using relatively diluted synthesis mixtures. On the contrary, the use of concentrated synthesis mixtures allowed SAPO-18 to be obtained in all the studied conditions. The obtained solids were characterized with XRD, SEM, ICP-AES, TG and <sup>27</sup>Al and <sup>31</sup>P MAS NMR spectroscopy. The results highlight the importance of the external pressure effect on the hydrothermal synthesis of molecular sieves and its influence on the interaction between the organic molecule and the silicoaluminophosphate network.https://www.mdpi.com/2079-4991/12/3/396silicoaluminophosphateshydrothermal synthesishigh pressurewater contentnon-conventional synthesis |
| spellingShingle | Raquel Simancas Masamori Takemura Yasuo Yonezawa Sohei Sukenaga Mariko Ando Hiroyuki Shibata Anand Chokkalingam Kenta Iyoki Tatsuya Okubo Toru Wakihara Exploring Hydrothermal Synthesis of SAPO-18 under High Hydrostatic Pressure Nanomaterials silicoaluminophosphates hydrothermal synthesis high pressure water content non-conventional synthesis |
| title | Exploring Hydrothermal Synthesis of SAPO-18 under High Hydrostatic Pressure |
| title_full | Exploring Hydrothermal Synthesis of SAPO-18 under High Hydrostatic Pressure |
| title_fullStr | Exploring Hydrothermal Synthesis of SAPO-18 under High Hydrostatic Pressure |
| title_full_unstemmed | Exploring Hydrothermal Synthesis of SAPO-18 under High Hydrostatic Pressure |
| title_short | Exploring Hydrothermal Synthesis of SAPO-18 under High Hydrostatic Pressure |
| title_sort | exploring hydrothermal synthesis of sapo 18 under high hydrostatic pressure |
| topic | silicoaluminophosphates hydrothermal synthesis high pressure water content non-conventional synthesis |
| url | https://www.mdpi.com/2079-4991/12/3/396 |
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