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Microporous Aluminophosphate ULM-6: Synthesis, NMR Assignment, and Its Transformation to AlPO4-14 Molecular Sieve
Wang, Dehua1,2; Xu, Shutao1; Yang, Miao1; Chu, Yueying3; Tian, Peng1; Liu, Zhongmin1
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY C
2016-06-09
ISSN1932-7447
DOI10.1021/acs.jpcc.6b00300
Volume120Issue:22Pages:11854-11863
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
WOS KeywordSOLID-STATE NMR ; ANGLE-SPINNING NMR ; STRUCTURE-DIRECTING AGENT ; QUADRUPOLAR NUCLEI ; SPECTROSCOPY ; SPECTRA ; AL-27 ; 1,3-DIAMINOPROPANE ; CRYSTALLIZATION ; SEPARATION
AbstractA pure fluorinated aluminophosphate [A1(8)P(8)O(32)F(4)center dot(C3H12N2)(2)(H2O)(2)] (ULM-6) has been synthesized via an aminothermal strategy, in which triisopropanolamine (TIPA) is used as the solvent together with the addition of propyleneurea and HF. The C-13 NMR spectrum demonstrates that 1,3-diaminopropane, the in situ decomposer of propyleneurea, is the real structure-directing agent (SDA) for ULM-6 crystals. The local Al, P, and F environments of the dehydrated ULM-6 are investigated by 1D and 2D solid-state NMR spectroscopy. The spatial proximities are extracted from F-19{Al-27}, F-19{P-31}, Al-27-{F-19}, and P-31{F-19} rotational-echo double resonance (REDOR) NMR experiments as well as F-19 -> P-31 heteronuclear correlation (HETCOR) NMR and {P-31}Al-27 HMQC NMR experiments, allowing a full assignment of all the F-19, Al-27, and P-31 resonances to the corresponding crystallographic sites. Moreover, it is found that the structure of ULM-6 is closely related to that of AIPO(4)-14. A combination of high-temperature powder XRD, thermal analysis, and F-19 NMR reveals that the removal of fluorine atoms at higher temperature is crucial to the phase transformation of ULM-6 to AlPO4-14. The calcined product shows high CO2/CH4 and CO2/N-2 selectivity with ratios of 15.5 and 29.1 (101 kPa, 25 degrees C), respectively.
Language英语
WOS IDWOS:000377841400011
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/170565
Collection中国科学院大连化学物理研究所
Corresponding AuthorTian, Peng; Liu, Zhongmin
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Natl Engn Lab Methanol Olefins, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Wuhan Inst Phys & Math, Natl Ctr Magnet Resonance Wuhan, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China
Recommended Citation
GB/T 7714
Wang, Dehua,Xu, Shutao,Yang, Miao,et al. Microporous Aluminophosphate ULM-6: Synthesis, NMR Assignment, and Its Transformation to AlPO4-14 Molecular Sieve[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2016,120(22):11854-11863.
APA Wang, Dehua,Xu, Shutao,Yang, Miao,Chu, Yueying,Tian, Peng,&Liu, Zhongmin.(2016).Microporous Aluminophosphate ULM-6: Synthesis, NMR Assignment, and Its Transformation to AlPO4-14 Molecular Sieve.JOURNAL OF PHYSICAL CHEMISTRY C,120(22),11854-11863.
MLA Wang, Dehua,et al."Microporous Aluminophosphate ULM-6: Synthesis, NMR Assignment, and Its Transformation to AlPO4-14 Molecular Sieve".JOURNAL OF PHYSICAL CHEMISTRY C 120.22(2016):11854-11863.
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