中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Synthesis of 3D Large-Pore Germanosilicate Zeolites Using Imidazolium-Based Long Dications

文献类型:期刊论文

作者Lu, Peng1,2,3,6; Mayoral, Alvaro4; Gomez-Hortiguela, Luis5; Zhang, Yaping4; Camblor, Miguel A.1
刊名CHEMISTRY OF MATERIALS
出版日期2019-08-13
卷号31期号:15页码:5484-5493
ISSN号0897-4756
DOI10.1021/acs.chemmater.9b00959
通讯作者Camblor, Miguel A.(macamblor@icmm.csic.es)
英文摘要Introduction of small molar fractions of Ge in a synthesis system otherwise yielding the monodimensional large-pore zeolite MTW produced three 3D large-pore materials as the Ge fraction increased: *BEA, HPM-8, and HPM-7. HPM-8 is a zeolite consisting of an intergrowth of polymorphs D and E of the zeolite Beta family with a large predominance (>80%) of polymorph D, according to DIFFaX simulations and high-resolution scanning transmission electron microscopy analysis. After calcination, HPM-8 becomes remarkably stable upon contact with ambient air. HPM-7 likely possesses the POS topology, which is related to polymorph C. The density of double 4-ring (D4R) units in the crystallized materials increases from *BEA to HPM-8 to HPM-7, that is, as the Ge fraction increases. Interestingly, molecular mechanics show that in both HPM-7 and HPM-8, the organic dications prefer to site with their imidazolium rings in close contact with the D4R units as a consequence of a stronger confinement in this position. Indeed, the structure-directing role of these long dications can be explained as a consequence of the appropriate distance match between adjacent D4R units in both zeolite frameworks (and hence the negative charges associated with the occluded fluoride) and the imidazolium rings of these organic dications (and hence the positive charges), which is dictated by the length of the alkyl spacers, thus driving the crystallization pathway toward these particular germanosilicate zeolites.
WOS关键词SILICA ; CRYSTAL ; GE
资助项目Spanish Ministry of Science, Innovation and Universities[MAT2016-77496-R] ; Spanish Ministry of Science, Innovation and Universities[MAT2015-71117-R] ; National Natural Science Foundation of China[NSFC-21850410448] ; National Natural Science Foundation of China[NSFC-21835002] ; China Scholarship Council (CSC) ; SPST of ShanghaiTech University[EM02161943]
WOS研究方向Chemistry ; Materials Science
语种英语
WOS记录号WOS:000480826900016
出版者AMER CHEMICAL SOC
资助机构Spanish Ministry of Science, Innovation and Universities ; Spanish Ministry of Science, Innovation and Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; SPST of ShanghaiTech University ; SPST of ShanghaiTech University ; Spanish Ministry of Science, Innovation and Universities ; Spanish Ministry of Science, Innovation and Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; SPST of ShanghaiTech University ; SPST of ShanghaiTech University ; Spanish Ministry of Science, Innovation and Universities ; Spanish Ministry of Science, Innovation and Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; SPST of ShanghaiTech University ; SPST of ShanghaiTech University ; Spanish Ministry of Science, Innovation and Universities ; Spanish Ministry of Science, Innovation and Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Scholarship Council (CSC) ; China Scholarship Council (CSC) ; SPST of ShanghaiTech University ; SPST of ShanghaiTech University
源URL[http://cas-ir.dicp.ac.cn/handle/321008/173658]  
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Camblor, Miguel A.
作者单位1.CSIC, ICMM, C Sor Juana Ines de la Cruz 3, Madrid 28049, Spain
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.ShanghaiTech Univ, Sch Phys Sci & Technol, Ctr High Resolut Electron Microscopy ChEM, 393 Middle Huaxia Rd, Shanghai 201210, Peoples R China
5.CSIC, ICP, Madrid 28049, Spain
6.Johns Hopkins Univ, Inst Nanobiotechnol WSE, 3400 Charles St, Baltimore, MD 21218 USA
推荐引用方式
GB/T 7714
Lu, Peng,Mayoral, Alvaro,Gomez-Hortiguela, Luis,et al. Synthesis of 3D Large-Pore Germanosilicate Zeolites Using Imidazolium-Based Long Dications[J]. CHEMISTRY OF MATERIALS,2019,31(15):5484-5493.
APA Lu, Peng,Mayoral, Alvaro,Gomez-Hortiguela, Luis,Zhang, Yaping,&Camblor, Miguel A..(2019).Synthesis of 3D Large-Pore Germanosilicate Zeolites Using Imidazolium-Based Long Dications.CHEMISTRY OF MATERIALS,31(15),5484-5493.
MLA Lu, Peng,et al."Synthesis of 3D Large-Pore Germanosilicate Zeolites Using Imidazolium-Based Long Dications".CHEMISTRY OF MATERIALS 31.15(2019):5484-5493.

入库方式: OAI收割

来源:大连化学物理研究所

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