One-pot synthesis of hollow single crystal SSZ-13 zeolite by creating aluminum gradients with excellent activity for NH3-SCR
| Autor: | Yi Ji, Zhiheng Wang, Wenshou Sun, Shujun Deng, Di Deng, Hong He, Guangjin Hou, Zhipeng Chen, Dandan He, Licheng Liu |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
One-pot synthesis chemistry.chemical_element Selective catalytic reduction 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Copper 0104 chemical sciences Catalysis SSZ-13 chemistry Chemical engineering Mechanics of Materials General Materials Science 0210 nano-technology Zeolite Single crystal NOx |
| Zdroj: | Microporous and Mesoporous Materials. 314:110865 |
| ISSN: | 1387-1811 |
| Popis: | Hollow zeolite single crystals have received extensive attention due to their unique cavities and outstanding catalytic performance. Although many kinds of zeolites have been synthesized with hollow structures, the related synthesis of hollow SSZ-13 zeolites has not been reported yet. In this work, we first synthesized hollow zeolite SSZ-13 single crystals by a simple and economical strategy without additional templates, which involves adjusting the spatial chemistry distribution of elements throughout the crystals to create Al-zoned and forming cavity by selective desiliconization. Furthermore, we doped the synthesized hollow zeolite SSZ-13 with copper, and the hollow Cu-SSZ-13 zeolite exhibits an enhanced catalytic activity of selective catalytic reduction (SCR) of NOx with NH3 compared with the traditional solid Cu-SSZ-13. |
| Databáze: | OpenAIRE |
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