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Zeolite synthesis using flexible diquaternary alkylammonium ions (CnH2n+1)2HN+(CH2)5N+H(CnH2n+1)2 with n = 1−5 as structure-directing agents

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Zeolite synthesis using flexible diquaternary alkylammonium ions (CnH2n+1)2HN+(CH2)5N+H(CnH2n+1)2 with n = 1−5 as structure-directing agents. / Han, B.; Lee, S-H.; Shin, C-H.; Cox, Paul; Hong, S.

In: Chemistry of Materials, Vol. 17, No. 3, 2005, p. 477-486.

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Han, B. ; Lee, S-H. ; Shin, C-H. ; Cox, Paul ; Hong, S. / Zeolite synthesis using flexible diquaternary alkylammonium ions (CnH2n+1)2HN+(CH2)5N+H(CnH2n+1)2 with n = 1−5 as structure-directing agents. In: Chemistry of Materials. 2005 ; Vol. 17, No. 3. pp. 477-486.

Bibtex

@article{4040e3ace52f405bb50a230d705a6daf,
title = "Zeolite synthesis using flexible diquaternary alkylammonium ions (CnH2n+1)2HN+(CH2)5N+H(CnH2n+1)2 with n = 1−5 as structure-directing agents",
abstract = "The use of a series of flexible, linear diquaternary alkylammonium ions (CnH2n+1)2HN+(CH2)5N+H(CnH2n+1)2 with n = 1−5 as structure-directing agents in zeolite syntheses is described. Among the ammonium ions studied here, the (CH3)2HN+(CH2)5N+H(CH3)2 and [(CH3)2CH]2HN+(CH2)5N+H[CH(CH3)2]2 ions were found to be new structure-directing agents for the crystallization of levyne and MCM-22, respectively. The overall synthesis results of this study reveal that the phase selectivity of the crystallization can differ according to both the length of the dialkyl substituents on the ammonium ion and the oxide composition of synthesis mixtures. The host−guest interactions in nonasil, ZSM-12, mordenite, and levyne containing (CH3)2HN+(CH2)5N+H(CH3)2 as a guest molecule are investigated by 1H−13C CP MAS NMR and Raman spectroscopies, and computer modeling studies, and it is shown that the organic guest molecules adopt distinct conformations in order to fit in the pores of each zeolite host.",
author = "B. Han and S-H. Lee and C-H. Shin and Paul Cox and S. Hong",
year = "2005",
doi = "10.1021/cm048418+",
language = "English",
volume = "17",
pages = "477--486",
journal = "Chemistry of Materials",
issn = "0897-4756",
publisher = "American Chemical Society",
number = "3",

}

RIS

TY - JOUR

T1 - Zeolite synthesis using flexible diquaternary alkylammonium ions (CnH2n+1)2HN+(CH2)5N+H(CnH2n+1)2 with n = 1−5 as structure-directing agents

AU - Han, B.

AU - Lee, S-H.

AU - Shin, C-H.

AU - Cox, Paul

AU - Hong, S.

PY - 2005

Y1 - 2005

N2 - The use of a series of flexible, linear diquaternary alkylammonium ions (CnH2n+1)2HN+(CH2)5N+H(CnH2n+1)2 with n = 1−5 as structure-directing agents in zeolite syntheses is described. Among the ammonium ions studied here, the (CH3)2HN+(CH2)5N+H(CH3)2 and [(CH3)2CH]2HN+(CH2)5N+H[CH(CH3)2]2 ions were found to be new structure-directing agents for the crystallization of levyne and MCM-22, respectively. The overall synthesis results of this study reveal that the phase selectivity of the crystallization can differ according to both the length of the dialkyl substituents on the ammonium ion and the oxide composition of synthesis mixtures. The host−guest interactions in nonasil, ZSM-12, mordenite, and levyne containing (CH3)2HN+(CH2)5N+H(CH3)2 as a guest molecule are investigated by 1H−13C CP MAS NMR and Raman spectroscopies, and computer modeling studies, and it is shown that the organic guest molecules adopt distinct conformations in order to fit in the pores of each zeolite host.

AB - The use of a series of flexible, linear diquaternary alkylammonium ions (CnH2n+1)2HN+(CH2)5N+H(CnH2n+1)2 with n = 1−5 as structure-directing agents in zeolite syntheses is described. Among the ammonium ions studied here, the (CH3)2HN+(CH2)5N+H(CH3)2 and [(CH3)2CH]2HN+(CH2)5N+H[CH(CH3)2]2 ions were found to be new structure-directing agents for the crystallization of levyne and MCM-22, respectively. The overall synthesis results of this study reveal that the phase selectivity of the crystallization can differ according to both the length of the dialkyl substituents on the ammonium ion and the oxide composition of synthesis mixtures. The host−guest interactions in nonasil, ZSM-12, mordenite, and levyne containing (CH3)2HN+(CH2)5N+H(CH3)2 as a guest molecule are investigated by 1H−13C CP MAS NMR and Raman spectroscopies, and computer modeling studies, and it is shown that the organic guest molecules adopt distinct conformations in order to fit in the pores of each zeolite host.

U2 - 10.1021/cm048418+

DO - 10.1021/cm048418+

M3 - Article

VL - 17

SP - 477

EP - 486

JO - Chemistry of Materials

JF - Chemistry of Materials

SN - 0897-4756

IS - 3

ER -

ID: 165466