Mechanochemically assisted hydrothermal synthesis of Sn-substituted MFI-type silicates
Substitution of Al atoms in a zeolite framework by catalytic metal atoms has attracted considerable attention because the catalytic behavior can be tuned by the substituted atoms. In the present study, Sn-substituted MFI-type silicates were synthesized using a hydrothermal reaction of an amorphous S...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2018-12-01
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| Series: | Science and Technology of Advanced Materials |
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| Online Access: | http://dx.doi.org/10.1080/14686996.2018.1497404 |
| _version_ | 1818536757896937472 |
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| author | Kiyoshi Kanie Moe Sakaguchi Fumiya Muto Mami Horie Masafumi Nakaya Toshiyuki Yokoi Atsushi Muramatsu |
| author_facet | Kiyoshi Kanie Moe Sakaguchi Fumiya Muto Mami Horie Masafumi Nakaya Toshiyuki Yokoi Atsushi Muramatsu |
| author_sort | Kiyoshi Kanie |
| collection | DOAJ |
| description | Substitution of Al atoms in a zeolite framework by catalytic metal atoms has attracted considerable attention because the catalytic behavior can be tuned by the substituted atoms. In the present study, Sn-substituted MFI-type silicates were synthesized using a hydrothermal reaction of an amorphous Si-O-Sn precursor prepared by mechanochemical grinding of SiO2 and Sn(OH)4. The mechanochemical treatment was found to be a key technique for obtaining the amorphous Si-O-Sn precursor, where tetrahedral Sn4+ species were incorporated into the amorphous matrix. The Sn content in the framework of the MFI-type silicates was successfully controlled by the initial HCl/Si molar ratio of the hydrothermal procedures. Optical reflectance measurements revealed that the Sn4+ ions were dispersedly incorporated into the silicate framework while preserving the initial tetrahedrally coordinated species. Infrared results imply that the resulting Sn-substituted MFI-type silicate has Brønsted acid character. Precise control of the Brønsted and Lewis acid properties by Sn doping is a promising approach to the development of novel types of zeolite-based catalytic materials. |
| first_indexed | 2024-12-11T18:42:03Z |
| format | Article |
| id | doaj.art-dde8d8c6f76f44a3804e1295f00d6e26 |
| institution | Directory Open Access Journal |
| issn | 1468-6996 1878-5514 |
| language | English |
| last_indexed | 2024-12-11T18:42:03Z |
| publishDate | 2018-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Science and Technology of Advanced Materials |
| spelling | doaj.art-dde8d8c6f76f44a3804e1295f00d6e262022-12-22T00:54:35ZengTaylor & Francis GroupScience and Technology of Advanced Materials1468-69961878-55142018-12-0119154555310.1080/14686996.2018.14974041497404Mechanochemically assisted hydrothermal synthesis of Sn-substituted MFI-type silicatesKiyoshi Kanie0Moe Sakaguchi1Fumiya Muto2Mami Horie3Masafumi Nakaya4Toshiyuki Yokoi5Atsushi Muramatsu6Tohoku UniversityTohoku UniversityTohoku UniversityTohoku UniversityTohoku UniversityInstitute of Innovative Research, Tokyo Institute of TechnologyTohoku UniversitySubstitution of Al atoms in a zeolite framework by catalytic metal atoms has attracted considerable attention because the catalytic behavior can be tuned by the substituted atoms. In the present study, Sn-substituted MFI-type silicates were synthesized using a hydrothermal reaction of an amorphous Si-O-Sn precursor prepared by mechanochemical grinding of SiO2 and Sn(OH)4. The mechanochemical treatment was found to be a key technique for obtaining the amorphous Si-O-Sn precursor, where tetrahedral Sn4+ species were incorporated into the amorphous matrix. The Sn content in the framework of the MFI-type silicates was successfully controlled by the initial HCl/Si molar ratio of the hydrothermal procedures. Optical reflectance measurements revealed that the Sn4+ ions were dispersedly incorporated into the silicate framework while preserving the initial tetrahedrally coordinated species. Infrared results imply that the resulting Sn-substituted MFI-type silicate has Brønsted acid character. Precise control of the Brønsted and Lewis acid properties by Sn doping is a promising approach to the development of novel types of zeolite-based catalytic materials.http://dx.doi.org/10.1080/14686996.2018.1497404MechanochemicalzeolitehydrothermalsilicateMFI |
| spellingShingle | Kiyoshi Kanie Moe Sakaguchi Fumiya Muto Mami Horie Masafumi Nakaya Toshiyuki Yokoi Atsushi Muramatsu Mechanochemically assisted hydrothermal synthesis of Sn-substituted MFI-type silicates Science and Technology of Advanced Materials Mechanochemical zeolite hydrothermal silicate MFI |
| title | Mechanochemically assisted hydrothermal synthesis of Sn-substituted MFI-type silicates |
| title_full | Mechanochemically assisted hydrothermal synthesis of Sn-substituted MFI-type silicates |
| title_fullStr | Mechanochemically assisted hydrothermal synthesis of Sn-substituted MFI-type silicates |
| title_full_unstemmed | Mechanochemically assisted hydrothermal synthesis of Sn-substituted MFI-type silicates |
| title_short | Mechanochemically assisted hydrothermal synthesis of Sn-substituted MFI-type silicates |
| title_sort | mechanochemically assisted hydrothermal synthesis of sn substituted mfi type silicates |
| topic | Mechanochemical zeolite hydrothermal silicate MFI |
| url | http://dx.doi.org/10.1080/14686996.2018.1497404 |
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