Low Temperature Synthesis of Mesoporous SiC in Dual-Confined Spaces via Magnesiothermic Reduction.
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| Title: | Low Temperature Synthesis of Mesoporous SiC in Dual-Confined Spaces via Magnesiothermic Reduction. |
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| Authors: | Wang, Zeng-Rong1 (AUTHOR), Liu, Long1 (AUTHOR), Zhang, Xue1 (AUTHOR), Xu, Jia-Lin1 (AUTHOR), Sun, Qiang1 (AUTHOR) sunq@smm.neu.edu.cn |
| Source: | NANO (1793-2920). Sep2019, Vol. 14 Issue 9, pN.PAG-N.PAG. 10p. |
| Subjects: | Low temperatures, Silicon carbide, Surface area, Catalyst supports, Stainless steel, Porosity, Mesoporous silica |
| Abstract: | Silicon carbide (SiC), especially mesoporous SiC has been in immense vogue for more than a decade because of its intriguing properties and wide applications. However, it is still challenging to synthesize mesoporous SiC with good structural integrality, large specific surface area and desirable porosity at a low temperature. In this study, we reported a "dual-confined spaces"-assisted synthesis of mesoporous SiC using well-assembled SiO2/carbon composite as precursor via a magnesiothermic reduction process. The well-crystallinity mesoporous SiC presented a mesopore structure with high specific surface area of 267.3 m2 g − 1 and large mesopore size of ca. 10 nm can be directly fabricated at a temperature of at least 550∘C and the optimum synthesis temperature is 650∘C. During the synthesis, mesoporous carbon matrix and a pressure-tight stainless steel reactor were served as "dual-confined spaces" to avoid the aggregation of silica and the silicon residue left in the final SiC sample. Furthermore, the as-prepared mesoporous SiC showed prominent performance as catalyst support for the reduction of 4-nitrophenol to 4-aminophenol. The well-crystallinity mesoporous SiC with specific surface area of 267.3 m2 g–1 and large mesopore size of 10 nm was synthesized from well-assembled SiO2/C composite via a facile and energy-saving magnesiothermic reduction process at low temperature in a designed "dual-confined spaces". [ABSTRACT FROM AUTHOR] |
| Copyright of NANO (1793-2920) is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 138883270 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Low Temperature Synthesis of Mesoporous SiC in Dual-Confined Spaces via Magnesiothermic Reduction. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Wang%2C+Zeng-Rong%22">Wang, Zeng-Rong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Long%22">Liu, Long</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Xue%22">Zhang, Xue</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xu%2C+Jia-Lin%22">Xu, Jia-Lin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sun%2C+Qiang%22">Sun, Qiang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> sunq@smm.neu.edu.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22NANO+%281793-2920%29%22">NANO (1793-2920)</searchLink>. Sep2019, Vol. 14 Issue 9, pN.PAG-N.PAG. 10p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Low+temperatures%22">Low temperatures</searchLink><br /><searchLink fieldCode="DE" term="%22Silicon+carbide%22">Silicon carbide</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+area%22">Surface area</searchLink><br /><searchLink fieldCode="DE" term="%22Catalyst+supports%22">Catalyst supports</searchLink><br /><searchLink fieldCode="DE" term="%22Stainless+steel%22">Stainless steel</searchLink><br /><searchLink fieldCode="DE" term="%22Porosity%22">Porosity</searchLink><br /><searchLink fieldCode="DE" term="%22Mesoporous+silica%22">Mesoporous silica</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Silicon carbide (SiC), especially mesoporous SiC has been in immense vogue for more than a decade because of its intriguing properties and wide applications. However, it is still challenging to synthesize mesoporous SiC with good structural integrality, large specific surface area and desirable porosity at a low temperature. In this study, we reported a "dual-confined spaces"-assisted synthesis of mesoporous SiC using well-assembled SiO2/carbon composite as precursor via a magnesiothermic reduction process. The well-crystallinity mesoporous SiC presented a mesopore structure with high specific surface area of 267.3 m2 g − 1 and large mesopore size of ca. 10 nm can be directly fabricated at a temperature of at least 550∘C and the optimum synthesis temperature is 650∘C. During the synthesis, mesoporous carbon matrix and a pressure-tight stainless steel reactor were served as "dual-confined spaces" to avoid the aggregation of silica and the silicon residue left in the final SiC sample. Furthermore, the as-prepared mesoporous SiC showed prominent performance as catalyst support for the reduction of 4-nitrophenol to 4-aminophenol. The well-crystallinity mesoporous SiC with specific surface area of 267.3 m2 g–1 and large mesopore size of 10 nm was synthesized from well-assembled SiO2/C composite via a facile and energy-saving magnesiothermic reduction process at low temperature in a designed "dual-confined spaces". [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of NANO (1793-2920) is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1142/S1793292019501157 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 10 StartPage: N.PAG Subjects: – SubjectFull: Low temperatures Type: general – SubjectFull: Silicon carbide Type: general – SubjectFull: Surface area Type: general – SubjectFull: Catalyst supports Type: general – SubjectFull: Stainless steel Type: general – SubjectFull: Porosity Type: general – SubjectFull: Mesoporous silica Type: general Titles: – TitleFull: Low Temperature Synthesis of Mesoporous SiC in Dual-Confined Spaces via Magnesiothermic Reduction. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Wang, Zeng-Rong – PersonEntity: Name: NameFull: Liu, Long – PersonEntity: Name: NameFull: Zhang, Xue – PersonEntity: Name: NameFull: Xu, Jia-Lin – PersonEntity: Name: NameFull: Sun, Qiang IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 09 Text: Sep2019 Type: published Y: 2019 Identifiers: – Type: issn-print Value: 17932920 Numbering: – Type: volume Value: 14 – Type: issue Value: 9 Titles: – TitleFull: NANO (1793-2920) Type: main |
| ResultId | 1 |
