Hollow nanocrystals of silicoaluminophosphate molecular sieves synthesized by an aminothermal co-templating strategy
文献类型：期刊论文
| 作者 | Wang, Dehua1,2; Yang, Miao1; Zhang, Wenna1,2; Fan, Dong1,2; Tian, Peng1; Liu, Zhongmin1 |
| 刊名 | CRYSTENGCOMM
 |
| 出版日期 | 2016 |
| 卷号 | 18期号:6页码:1000-1008 |
| ISSN号 | 1466-8033 |
| DOI | 10.1039/c5ce01798j |
| 文献子类 | Article |
| 英文摘要 | An aminothermal co-templating strategy has been developed to explore the synthesis of SAPO molecular sieves. Nanosized SAPO-56 (AFX) with a hollow morphology is, for the first time, obtained by utilizing triethylamine (TEA) and trimethylamine (TMA) as both the solvent and the template in the presence of HF. The prepared material is well characterized, and the coexistence of TEA and TMA in the crystals is proved by C-13 NMR. Molecular modelling indicates that the most stable status for the as-made SAPO-56 is 2TEA per aft cage and 1TMA per gme cage in the AFX structure, which is consistent with the TG results and verifies the co-templating behaviour of the two amines. In addition, the aminothermal crystallization process of SAPO-56 is examined, revealing an interesting in situ phase transformation from SAPO-34 (only containing TEA) to nano SAPO-56 followed by a further in situ post-synthetic leaching to achieve the hollow structure. Both F- anions and organic amines are proposed to be responsible for the dissolution of SAPO-34 and the etching of SAPO-56 nanocrystals. The Si-rich outer layer with abundant Si coordination environments (more Si-O-Al bonds and less Al-O-P bonds) helps the shell of SAPO-56 survive the leaching. This work offers an effective way to prepare SAPO-56 nanocrystals and demonstrates the huge potential of the aminothermal co-templating route for new material synthesis. |
| WOS关键词 | IN-SITU TRANSFORMATION ; IONOTHERMAL SYNTHESIS ; LESS DENSE ; MACROPOROUS MONOLITHS ; SILICON DISTRIBUTION ; ALKALINE TREATMENT ; RATIONAL SYNTHESIS ; ZEOLITE ; SAPO-34 ; ALUMINOPHOSPHATES |
| WOS研究方向 | Chemistry ; Crystallography |
| 语种 | 英语 |
| WOS记录号 | WOS:000369609800019 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/171372]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | Tian, Peng; Liu, Zhongmin |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Engn Lab Methanol Olefins, Dalian Natl Lab Clean Energy, Zhongshan Rd 457, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Dehua,Yang, Miao,Zhang, Wenna,et al. Hollow nanocrystals of silicoaluminophosphate molecular sieves synthesized by an aminothermal co-templating strategy[J]. CRYSTENGCOMM,2016,18(6):1000-1008. |
| APA | Wang, Dehua,Yang, Miao,Zhang, Wenna,Fan, Dong,Tian, Peng,&Liu, Zhongmin.(2016).Hollow nanocrystals of silicoaluminophosphate molecular sieves synthesized by an aminothermal co-templating strategy.CRYSTENGCOMM,18(6),1000-1008. |
| MLA | Wang, Dehua,et al."Hollow nanocrystals of silicoaluminophosphate molecular sieves synthesized by an aminothermal co-templating strategy".CRYSTENGCOMM 18.6(2016):1000-1008. |
入库方式： OAI收割
来源：大连化学物理研究所
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