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| Decoupling nucleation from crystal-growth for the synthesis of nanocrystalline zeolites | |
| 2020-06-07 | |
| 发表期刊 | DALTON TRANSACTIONS (IF:3.5[JCR-2023],3.3[5-Year]) |
| ISSN | 14779234 |
| 卷号 | 49期号:21页码:7258-7266 |
| 发表状态 | 已发表 |
| DOI | 10.1039/d0dt01291b |
| 摘要 | The increasing demands for catalysts with improved accessibility to reactants call for a rational synthesis of nanosized zeolites. Herein we developed a facile approach for highly crystalline MFI-type (Silicalite-1 and ZSM-5) and beta zeolites with variable Si/Al ratios and high yield. This was achieved by kinetically decoupling the nucleation from the growth process of the zeolites in a highly concentrated gel systemviaa temperature-staged treatment. The carefully controlled low-water environment ensures only nucleation in stage I (aging), and hence the generation of abundant nuclei for the subsequent rapid crystallization within a self-confined space at stage II (growth). The method, without using expensive templates or additives, allows the syntheses of nanosized, well-isolated ZSM-5 (Si/Al = 100-8, 36-88 nm, yield >85%) and Beta (Si/Al = 25-100, 21-66 nm, yield >95%). The ultra-small crystal size endows ZSM-5 zeolites with good catalytic activity, product selectivity and remarkably longer lifetime in methanol conversion reactions. |
| 收录类别 | SCI ; SCIE ; EI |
| 资助项目 | National Natural Science Foundation of China[21835002][21875140] ; ChEM SPST[02161943] ; Analytical Instrumentation Center[SPST-AIC10112914] |
| WOS研究方向 | Chemistry |
| WOS类目 | Chemistry, Inorganic & Nuclear |
| 出版者 | Royal Society of Chemistry |
| EI入藏号 | 20202308782456 |
| EI主题词 | Additives ; Catalyst activity ; Crystal growth ; Nanocrystals ; Nucleation ; Silicate minerals ; Silicon ; Zeolites |
| EI分类号 | Minerals:482.2 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Nanotechnology:761 ; Chemical Operations:802.3 ; Chemical Agents and Basic Industrial Chemicals:803 ; Inorganic Compounds:804.2 ; Crystal Growth:933.1.2 |
| WOS关键词 | DRY-GEL CONVERSION ; CRYSTALLIZATION MECHANISM ; HYDROTHERMAL SYNTHESIS ; BETA ; NANOZEOLITES ; SIZE ; EVOLUTION ; EFFICIENT |
| 原始文献类型 | Article |
| 引用统计 | 正在获取...
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| 文献类型 | 期刊论文 |
| 条目标识符 | https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/121581 |
| 专题 | 物质科学与技术学院_本科生 物质科学与技术学院_PI研究组_马延航组 物质科学与技术学院_PI研究组_刘海铭组 物质科学与技术学院_硕士生 物质科学与技术学院_博士生 |
| 共同第一作者 | Fan, Yaqi |
| 通讯作者 | Ma, Yanhang |
| 作者单位 | 1.School of Physical Science and Technology, ShanghaiTech University, Shanghai; 201210, China 2.CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai; 201210, China 3.Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, School of Chemistry and Molecular Engineering, Shanghai; 200062, China |
| 第一作者单位 | 物质科学与技术学院 |
| 通讯作者单位 | 物质科学与技术学院 |
| 第一作者的第一单位 | 物质科学与技术学院 |
| 推荐引用方式 GB/T 7714 | Zhang, Guanqun,Fan, Yaqi,Huang, Ju,et al. Decoupling nucleation from crystal-growth for the synthesis of nanocrystalline zeolites[J]. DALTON TRANSACTIONS,2020,49(21):7258-7266. |
| APA | Zhang, Guanqun.,Fan, Yaqi.,Huang, Ju.,Wang, Lijin.,Yang, Chengguang.,...&Ma, Yanhang.(2020).Decoupling nucleation from crystal-growth for the synthesis of nanocrystalline zeolites.DALTON TRANSACTIONS,49(21),7258-7266. |
| MLA | Zhang, Guanqun,et al."Decoupling nucleation from crystal-growth for the synthesis of nanocrystalline zeolites".DALTON TRANSACTIONS 49.21(2020):7258-7266. |
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