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Efficient Hydrothermal Synthesis of SSZ-13 with Variable Grain Size
To meet the industrial needs for SSZ-13, variable sizes of SSZ-13 with different Si/Al ratios were firstly obtained by conventional hydrothermal synthesis using the seed method. Using a set of characterizations, like X-ray fluorescence (XRF), X-ray diffraction (XRD), and scanning electron microscopy...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7216272/ https://www.ncbi.nlm.nih.gov/pubmed/32295004 http://dx.doi.org/10.3390/ma13081829 |
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author | Wang, Yibao Wang, Chen Wang, Jun Wang, Jianqiang Wang, Lei Xu, Cheng Shen, Meiqing |
author_facet | Wang, Yibao Wang, Chen Wang, Jun Wang, Jianqiang Wang, Lei Xu, Cheng Shen, Meiqing |
author_sort | Wang, Yibao |
collection | PubMed |
description | To meet the industrial needs for SSZ-13, variable sizes of SSZ-13 with different Si/Al ratios were firstly obtained by conventional hydrothermal synthesis using the seed method. Using a set of characterizations, like X-ray fluorescence (XRF), X-ray diffraction (XRD), and scanning electron microscopy (SEM), the physicochemical structure and size distribution could be traced. After the specific Si/Al ratio of SSZ-13 zeolites was optimized, synthesized by changing the amounts of structure-directing agents (SDAs) and NaOH, the obtained SSZ-13 showed a high degree of crystallinity. With the limitation of the pH values, the variation of the alkalinity and water content was not helpful to generate different grain sizes of SSZ-13 materials. With the help of ground seed, the various grain sizes of SSZ-13s from 0.4 to 4 μm had a similar degree of crystallinity and size distribution. Moreover, due to the identical intensity of the Al peak in the NMR results, the different grain sizes of SSZ-13s had the same acidity. Our study revealed that using the seed method was an easy and efficient way to synthesize SSZ-13s with different sizes. |
format | Online Article Text |
id | pubmed-7216272 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-72162722020-05-22 Efficient Hydrothermal Synthesis of SSZ-13 with Variable Grain Size Wang, Yibao Wang, Chen Wang, Jun Wang, Jianqiang Wang, Lei Xu, Cheng Shen, Meiqing Materials (Basel) Article To meet the industrial needs for SSZ-13, variable sizes of SSZ-13 with different Si/Al ratios were firstly obtained by conventional hydrothermal synthesis using the seed method. Using a set of characterizations, like X-ray fluorescence (XRF), X-ray diffraction (XRD), and scanning electron microscopy (SEM), the physicochemical structure and size distribution could be traced. After the specific Si/Al ratio of SSZ-13 zeolites was optimized, synthesized by changing the amounts of structure-directing agents (SDAs) and NaOH, the obtained SSZ-13 showed a high degree of crystallinity. With the limitation of the pH values, the variation of the alkalinity and water content was not helpful to generate different grain sizes of SSZ-13 materials. With the help of ground seed, the various grain sizes of SSZ-13s from 0.4 to 4 μm had a similar degree of crystallinity and size distribution. Moreover, due to the identical intensity of the Al peak in the NMR results, the different grain sizes of SSZ-13s had the same acidity. Our study revealed that using the seed method was an easy and efficient way to synthesize SSZ-13s with different sizes. MDPI 2020-04-13 /pmc/articles/PMC7216272/ /pubmed/32295004 http://dx.doi.org/10.3390/ma13081829 Text en © 2020 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Wang, Yibao Wang, Chen Wang, Jun Wang, Jianqiang Wang, Lei Xu, Cheng Shen, Meiqing Efficient Hydrothermal Synthesis of SSZ-13 with Variable Grain Size |
title | Efficient Hydrothermal Synthesis of SSZ-13 with Variable Grain Size |
title_full | Efficient Hydrothermal Synthesis of SSZ-13 with Variable Grain Size |
title_fullStr | Efficient Hydrothermal Synthesis of SSZ-13 with Variable Grain Size |
title_full_unstemmed | Efficient Hydrothermal Synthesis of SSZ-13 with Variable Grain Size |
title_short | Efficient Hydrothermal Synthesis of SSZ-13 with Variable Grain Size |
title_sort | efficient hydrothermal synthesis of ssz-13 with variable grain size |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7216272/ https://www.ncbi.nlm.nih.gov/pubmed/32295004 http://dx.doi.org/10.3390/ma13081829 |
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