DICP OpenIR
Subject Area物理化学
Synthesis and characterization of DNL-6, a new silicoaluminophosphate molecular sieve with the RHO framework
Su, Xiong1,2,3; Tian, Peng1,2; Li, Jinzhe1,2; Zhang, Ying1,2; Meng, Shuanghe1,2; He, Yanli1,2; Fan, Dong1,2,3; Liu, Zhongmin1,2; Liu ZM(刘中民)
KeywordSapo Rho Synthesis Dnl-6 Crystallization Mechanism
Source PublicationMICROPOROUS AND MESOPOROUS MATERIALS
2011-10-01
ISSN待补充
DOI10.1016/j.micromeso.2011.04.004
Volume144Issue:1-3Pages:113-119
Indexed BySCI ; ISTP
SubtypeArticle
DepartmentDNL12
Funding ProjectDNL12
Contribution Rank1,1
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS KeywordCRYSTALLINE INORGANIC SOLIDS ; ZEOLITE RHO ; NMR-SPECTROSCOPY ; STATE NMR ; ALUMINOPHOSPHATE ; TEMPLATE ; SAPO-34 ; CATION
AbstractSynthesis and characterization of DNL-6, a new silicoaluminophosphate molecular sieve with the RHO framework; A new silicoaluminophosphate molecular sieve with the RHO framework (designated as DNL-6, Dalian National Laboratory Number 6) has been hydrothermally synthesized for the first time with diethylamine (DEA) template in the presence of cetyltrimethylammonium bromide (CTAB). Influence factors, such as CTAB amount and silica content in the starting gel, crystallization time and temperature, were investigated. It was observed that DEA together with CTAB were necessary for the formation of pure RHO phase, which appeared in a narrow range of the starting gel compositions and synthesis conditions. Only DEA and water molecules were found in the as-synthesized DNL-6 without any existence of CTAB. All Si atoms incorporated into the framework with Si(4Al) environment at a high amount close to the theoretical maximum value. DNL-6 molecular sieve possessed high micropore surface area (777 m(2)/g) and large micropore volume (0.36 cm(3)/g) with good thermal and hydrothermal stability. Crystallization course was studied by monitoring solid products at different crystallization times with XRD, SEM, XRF, NMR and CHN elemental analysis. It is proposed that DNL-6 crystals were more likely formed directly from the crystallization of liquid phase rather than from the transformation of amorphous materials, and Si atoms directly incorporated into the DNL-6 framework from the very beginning of the crystallization via a SM2 mechanism. (C) 2011 Elsevier Inc. All rights reserved.
Language英语
WOS IDWOS:000293435400015
Citation statistics
Cited Times:21[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/115840
Collection中国科学院大连化学物理研究所
Corresponding AuthorLiu ZM(刘中民)
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Engn Lab Methanol Olefins, Dalian 116023, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Su, Xiong,Tian, Peng,Li, Jinzhe,et al. Synthesis and characterization of DNL-6, a new silicoaluminophosphate molecular sieve with the RHO framework[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2011,144(1-3):113-119.
APA Su, Xiong.,Tian, Peng.,Li, Jinzhe.,Zhang, Ying.,Meng, Shuanghe.,...&刘中民.(2011).Synthesis and characterization of DNL-6, a new silicoaluminophosphate molecular sieve with the RHO framework.MICROPOROUS AND MESOPOROUS MATERIALS,144(1-3),113-119.
MLA Su, Xiong,et al."Synthesis and characterization of DNL-6, a new silicoaluminophosphate molecular sieve with the RHO framework".MICROPOROUS AND MESOPOROUS MATERIALS 144.1-3(2011):113-119.
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