DICP OpenIR
Subject Area物理化学
Phase-Transformation Synthesis of SAPO-34 and a Novel SAPO Molecular Sieve with RHO Framework Type from a SAPO-5 Precursor
Tian, Peng1; Su, Xiong1,2; Wang, Yingxia3; Xia, Qinghua4; Zhang, Ying1; Fan, Dong1,2; Meng, Shuanghe1; Liu, Zhongmin1; Liu ZM(刘中民)
KeywordDnl-6 Phase Selectivity Phase Transformation Rho Sapo-34
Source PublicationCHEMISTRY OF MATERIALS
2011-03-22
ISSN待补充
DOI10.1021/cm103512m
Volume23Issue:6Pages:1406-1413
Indexed BySCI
SubtypeArticle
DepartmentDNL12
Funding ProjectDNL12
Contribution Rank1,1
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Materials Science, Multidisciplinary
WOS Research AreaChemistry ; Materials Science
WOS KeywordAL-27 NMR INVESTIGATIONS ; HYDROTHERMAL SYNTHESIS ; ZEOLITE STRUCTURES ; AQUEOUS-SOLUTIONS ; CONVERSION ; GEL ; HYDROXYSODALITE ; SELECTIVITY ; PHOSPHORUS ; MECHANISM
AbstractPhase-Transformation Synthesis of SAPO-34 and a Novel SAPO Molecular Sieve with RHO Framework Type from a SAPO-5 Precursor; SAPO-34 and a novel SAPO molecular sieve with the RHO framework (designated as DNL-6) were synthesized using SAPO-5 (the denser phase) as the precursor and diethylamine (DEA) as the template. The entire transition process had been investigated by XRD, SEM, XRF, and NMR spectroscopy, which clearly revealed a solution-mediated transport mechanism attributed to the transformation from SAPO-5 to SAPO-34 via oscillating phases [SAPO-5 (FD = 16.9 T/nm(3)) double right arrow SAPO-34 (15.1) + DNL-6 (14.5) -> DNL-6 -> SAPO-34]. The initially formed SAPO-34 was different from the final one in this transformation due to very different percentages of organic inclusions, indicating that the host-guest interactions played important roles for the phase selectivity during the synthesis. DNL-6, obtained as an intermediate of the transformation process, possessed good thermal stability, large microporous surface area (724 m(2)/g), and high micropore volume (0.36 cm(3)/g). Rietveld refinement showed that the framework of calcined DNL-6 had typical features of the RHO structure with a high symmetry [I23, a = 15.08429(9) angstrom], composed of a body-centered cubic arrangement of alpha cages linked via double 8-rings.
Language英语
WOS IDWOS:000288291400010
Citation statistics
Cited Times:36[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/115839
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 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.Peking Univ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
4.Hubei Univ, Minist Educ, Key Lab Synth & Applicat Organ Funct Mol, Sch Chem & Chem Engn, Wuhan 430062, Peoples R China
Recommended Citation
GB/T 7714
Tian, Peng,Su, Xiong,Wang, Yingxia,et al. Phase-Transformation Synthesis of SAPO-34 and a Novel SAPO Molecular Sieve with RHO Framework Type from a SAPO-5 Precursor[J]. CHEMISTRY OF MATERIALS,2011,23(6):1406-1413.
APA Tian, Peng.,Su, Xiong.,Wang, Yingxia.,Xia, Qinghua.,Zhang, Ying.,...&刘中民.(2011).Phase-Transformation Synthesis of SAPO-34 and a Novel SAPO Molecular Sieve with RHO Framework Type from a SAPO-5 Precursor.CHEMISTRY OF MATERIALS,23(6),1406-1413.
MLA Tian, Peng,et al."Phase-Transformation Synthesis of SAPO-34 and a Novel SAPO Molecular Sieve with RHO Framework Type from a SAPO-5 Precursor".CHEMISTRY OF MATERIALS 23.6(2011):1406-1413.
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