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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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Autores principales: Simancas, Raquel, Takemura, Masamori, Yonezawa, Yasuo, Sukenaga, Sohei, Ando, Mariko, Shibata, Hiroyuki, Chokkalingam, Anand, Iyoki, Kenta, Okubo, Tatsuya, Wakihara, Toru
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8838306/
https://www.ncbi.nlm.nih.gov/pubmed/35159741
http://dx.doi.org/10.3390/nano12030396
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author Simancas, Raquel
Takemura, Masamori
Yonezawa, Yasuo
Sukenaga, Sohei
Ando, Mariko
Shibata, Hiroyuki
Chokkalingam, Anand
Iyoki, Kenta
Okubo, Tatsuya
Wakihara, Toru
author_facet Simancas, Raquel
Takemura, Masamori
Yonezawa, Yasuo
Sukenaga, Sohei
Ando, Mariko
Shibata, Hiroyuki
Chokkalingam, Anand
Iyoki, Kenta
Okubo, Tatsuya
Wakihara, Toru
author_sort Simancas, Raquel
collection PubMed
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 (27)Al and (31)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.
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spelling pubmed-88383062022-02-13 Exploring Hydrothermal Synthesis of SAPO-18 under High Hydrostatic Pressure Simancas, Raquel Takemura, Masamori Yonezawa, Yasuo Sukenaga, Sohei Ando, Mariko Shibata, Hiroyuki Chokkalingam, Anand Iyoki, Kenta Okubo, Tatsuya Wakihara, Toru Nanomaterials (Basel) Article 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 (27)Al and (31)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. MDPI 2022-01-26 /pmc/articles/PMC8838306/ /pubmed/35159741 http://dx.doi.org/10.3390/nano12030396 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Simancas, Raquel
Takemura, Masamori
Yonezawa, Yasuo
Sukenaga, Sohei
Ando, Mariko
Shibata, Hiroyuki
Chokkalingam, Anand
Iyoki, Kenta
Okubo, Tatsuya
Wakihara, Toru
Exploring Hydrothermal Synthesis of SAPO-18 under High Hydrostatic Pressure
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 Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8838306/
https://www.ncbi.nlm.nih.gov/pubmed/35159741
http://dx.doi.org/10.3390/nano12030396
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