Unraveling the twin and tunability of the crystal domain sizes in the medium-pore zeolite zsm-57 by electron crystallography
文献类型：期刊论文
| 作者 | Wang, Lei1; Yan, Nana1,2; Liu, Xiaona1,2; Zhao, Xuebin1,2; Shen, Meikun3; Liu, Leifeng4; Tian, Peng1; Guo, Peng1; Liu, Zhongmin1 |
| 刊名 | Chemistry-a european journal
 |
| 出版日期 | 2019-01-18 |
| 卷号 | 25期号:4页码:1029-1036 |
| 关键词 | Alkali metals Crystal growth Electron diffraction Transmission electron microscopy Twin structures Zeolites |
| ISSN号 | 0947-6539 |
| DOI | 10.1002/chem.201804269 |
| 通讯作者 | Guo, peng(pguo@dicp.ac.cn) ; Liu, zhongmin(zml@dicp.ac.cn) |
| 英文摘要 | Tailoring the morphology of a specific crystalline material through distinct crystal growth mechanisms (classical and nonclassical) is challenging. herein, we report the two unique morphologies of a medium-pore (10x8-ring) zeolite, zsm-57, prepared by employing an identical organic structure-directing agent (osda) and different inorganic cations, namely na+ and k+, denoted as zsm-57-na (pentagonal nanoplates) and zsm-57-k (pentagonal nanoprisms), respectively. the tunable twin domain size and twin boundaries in both samples have been unraveled at the atomic level by electron crystallography. it is of significance to note that the 10-ring pore openings run perpendicular to the pentagonal nanoplates and nanoprisms. moreover, the distinct crystal growth mechanisms, which result in the different unique morphologies and tunable twin domains, were further determined by electron crystallography combined with other techniques. nonclassical growth involving the aggregation of amorphous aluminosilicate nanoparticles to the smooth zsm-57-na crystal surface dominates the zsm-57-na crystallization process. for the zsm-57-k sample, the classical layer-by-layer growth through the addition of silica molecules to advancing steps on the crystal surface dominates the zsm-57-k crystallization process. the different morphologies of both samples result in the distinct catalytic lifespan of the methanol conversion and selectivity of lower olefins. |
| WOS关键词 | HIGH-SILICA ZEOLITE ; INITIO STRUCTURE SOLUTION ; FRAMEWORK TOPOLOGY ; BOROSILICATE ZEOLITE ; CRYSTALLIZATION ; MORPHOLOGY ; INTERGROWTH ; GROWTH ; MESOCRYSTALS ; DISORDER |
| WOS研究方向 | Chemistry |
| WOS类目 | Chemistry, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000456318800021 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2372903 |
| 专题 | 大连化学物理研究所 |
| 通讯作者 | Guo, 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, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Washington Univ, Dept Chem, 1 Brookings Dr, St Louis, MO 63130 USA 4.Univ Birmingham, Sch Met & Mat, Birmingham B15 2TT, W Midlands, England |
| 推荐引用方式 GB/T 7714 | Wang, Lei,Yan, Nana,Liu, Xiaona,et al. Unraveling the twin and tunability of the crystal domain sizes in the medium-pore zeolite zsm-57 by electron crystallography[J]. Chemistry-a european journal,2019,25(4):1029-1036. |
| APA | Wang, Lei.,Yan, Nana.,Liu, Xiaona.,Zhao, Xuebin.,Shen, Meikun.,...&Liu, Zhongmin.(2019).Unraveling the twin and tunability of the crystal domain sizes in the medium-pore zeolite zsm-57 by electron crystallography.Chemistry-a european journal,25(4),1029-1036. |
| MLA | Wang, Lei,et al."Unraveling the twin and tunability of the crystal domain sizes in the medium-pore zeolite zsm-57 by electron crystallography".Chemistry-a european journal 25.4(2019):1029-1036. |
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来源：大连化学物理研究所
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