Study of cloverite molecular sieves modified by grafting organometallic complexes inside the pores: II. Adsorption properties of cloverite modified by grafting -SnR3 fragments (R=Me, Et, nBu, Cy)

M. Adachi; J. Corker; H. Kessler; A. De Mallmann; F. Lefebvre; J. M. Basset

doi:10.1016/S1387-1811(98)00297-2

Study of cloverite molecular sieves modified by grafting organometallic complexes inside the pores: II. Adsorption properties of cloverite modified by grafting -SnR₃ fragments (R=Me, Et, nBu, Cy)

M. Adachi, J. Corker, H. Kessler, A. De Mallmann, F. Lefebvre^*, J. M. Basset

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

The adsorption properties of as-synthesized cloverite and of cloverite modified by grafting -SnR₃ (R=Me, Et, nBu, Cy) organometallic tin complexes were studied by a volumetric method. Three hydrocarbons, n-hexane, benzene and iso-octane, were investigated. The adsorption capacities of unmodified cloverite correspond to a filling of the 20 T channel system for benzene and iso-octane, and to a filling of the 8 T and 20 T channel systems for n-hexane. Grafting -SnCy₃ fragments onto the external surface of cloverite has no effect on the adsorption capacities of the three hydrocarbons but decreases significantly the diffusion rate of iso-octane. In contrast, the adsorption capacities of cloverite modified by -SnR₃ fragments grafted inside the crystal (R=Et, nBu: one fragment per window of the supercage; R=Me: 4 fragments per window) are completely modified: (i) iso-octane is completely excluded from the pore channels, due to steric constraints; (ii) n-hexane can only fill the 20 T pore channel system, and (iii) the decrease of the pore volume by grafting the organometallic fragment results in a reduction of the adsorption capacities of n-hexane and benzene.

Original language	English (US)
Pages (from-to)	155-162
Number of pages	8
Journal	Microporous and Mesoporous Materials
Volume	28
Issue number	1
DOIs	https://doi.org/10.1016/S1387-1811(98)00297-2
State	Published - Mar 1999
Externally published	Yes

Bibliographical note

Funding Information:
The authors wish to acknowledge Dr. A. Choplin for fruitful discussions and Mr. K. Mizukami of Miyamoto Laboratory, Tohoku University for the calculations with the Pore Access software. The European Community is gratefully acknowledged for a financial support (EEC contract 93-0280). One author (M.A.) thanks the Ministère de l'Enseignement Supérieur et de la Recherche (French government) for a financial support during her PhD. course.

Keywords

Adsorption
Alkyltin
Cloverite
Molecular sieves

ASJC Scopus subject areas

General Chemistry
General Materials Science
Condensed Matter Physics
Mechanics of Materials

Access to Document

10.1016/S1387-1811(98)00297-2

Cite this

Adachi, M., Corker, J., Kessler, H., De Mallmann, A., Lefebvre, F., & Basset, J. M. (1999). Study of cloverite molecular sieves modified by grafting organometallic complexes inside the pores: II. Adsorption properties of cloverite modified by grafting -SnR₃ fragments (R=Me, Et, nBu, Cy). Microporous and Mesoporous Materials, 28(1), 155-162. https://doi.org/10.1016/S1387-1811(98)00297-2

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title = "Study of cloverite molecular sieves modified by grafting organometallic complexes inside the pores: II. Adsorption properties of cloverite modified by grafting -SnR3 fragments (R=Me, Et, nBu, Cy)",

abstract = "The adsorption properties of as-synthesized cloverite and of cloverite modified by grafting -SnR3 (R=Me, Et, nBu, Cy) organometallic tin complexes were studied by a volumetric method. Three hydrocarbons, n-hexane, benzene and iso-octane, were investigated. The adsorption capacities of unmodified cloverite correspond to a filling of the 20 T channel system for benzene and iso-octane, and to a filling of the 8 T and 20 T channel systems for n-hexane. Grafting -SnCy3 fragments onto the external surface of cloverite has no effect on the adsorption capacities of the three hydrocarbons but decreases significantly the diffusion rate of iso-octane. In contrast, the adsorption capacities of cloverite modified by -SnR3 fragments grafted inside the crystal (R=Et, nBu: one fragment per window of the supercage; R=Me: 4 fragments per window) are completely modified: (i) iso-octane is completely excluded from the pore channels, due to steric constraints; (ii) n-hexane can only fill the 20 T pore channel system, and (iii) the decrease of the pore volume by grafting the organometallic fragment results in a reduction of the adsorption capacities of n-hexane and benzene.",

keywords = "Adsorption, Alkyltin, Cloverite, Molecular sieves",

author = "M. Adachi and J. Corker and H. Kessler and {De Mallmann}, A. and F. Lefebvre and Basset, {J. M.}",

note = "Funding Information: The authors wish to acknowledge Dr. A. Choplin for fruitful discussions and Mr. K. Mizukami of Miyamoto Laboratory, Tohoku University for the calculations with the Pore Access software. The European Community is gratefully acknowledged for a financial support (EEC contract 93-0280). One author (M.A.) thanks the Minist{\`e}re de l'Enseignement Sup{\'e}rieur et de la Recherche (French government) for a financial support during her PhD. course.",

year = "1999",

month = mar,

doi = "10.1016/S1387-1811(98)00297-2",

language = "English (US)",

volume = "28",

pages = "155--162",

journal = "Microporous and Mesoporous Materials",

issn = "1387-1811",

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number = "1",

}

Adachi, M, Corker, J, Kessler, H, De Mallmann, A, Lefebvre, F & Basset, JM 1999, 'Study of cloverite molecular sieves modified by grafting organometallic complexes inside the pores: II. Adsorption properties of cloverite modified by grafting -SnR₃ fragments (R=Me, Et, nBu, Cy)', Microporous and Mesoporous Materials, vol. 28, no. 1, pp. 155-162. https://doi.org/10.1016/S1387-1811(98)00297-2

Study of cloverite molecular sieves modified by grafting organometallic complexes inside the pores: II. Adsorption properties of cloverite modified by grafting -SnR₃ fragments (R=Me, Et, nBu, Cy). / Adachi, M.; Corker, J.; Kessler, H. et al.
In: Microporous and Mesoporous Materials, Vol. 28, No. 1, 03.1999, p. 155-162.

Research output: Contribution to journal › Article › peer-review

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AU - Adachi, M.

AU - Corker, J.

AU - Kessler, H.

AU - De Mallmann, A.

AU - Lefebvre, F.

AU - Basset, J. M.

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N2 - The adsorption properties of as-synthesized cloverite and of cloverite modified by grafting -SnR3 (R=Me, Et, nBu, Cy) organometallic tin complexes were studied by a volumetric method. Three hydrocarbons, n-hexane, benzene and iso-octane, were investigated. The adsorption capacities of unmodified cloverite correspond to a filling of the 20 T channel system for benzene and iso-octane, and to a filling of the 8 T and 20 T channel systems for n-hexane. Grafting -SnCy3 fragments onto the external surface of cloverite has no effect on the adsorption capacities of the three hydrocarbons but decreases significantly the diffusion rate of iso-octane. In contrast, the adsorption capacities of cloverite modified by -SnR3 fragments grafted inside the crystal (R=Et, nBu: one fragment per window of the supercage; R=Me: 4 fragments per window) are completely modified: (i) iso-octane is completely excluded from the pore channels, due to steric constraints; (ii) n-hexane can only fill the 20 T pore channel system, and (iii) the decrease of the pore volume by grafting the organometallic fragment results in a reduction of the adsorption capacities of n-hexane and benzene.

AB - The adsorption properties of as-synthesized cloverite and of cloverite modified by grafting -SnR3 (R=Me, Et, nBu, Cy) organometallic tin complexes were studied by a volumetric method. Three hydrocarbons, n-hexane, benzene and iso-octane, were investigated. The adsorption capacities of unmodified cloverite correspond to a filling of the 20 T channel system for benzene and iso-octane, and to a filling of the 8 T and 20 T channel systems for n-hexane. Grafting -SnCy3 fragments onto the external surface of cloverite has no effect on the adsorption capacities of the three hydrocarbons but decreases significantly the diffusion rate of iso-octane. In contrast, the adsorption capacities of cloverite modified by -SnR3 fragments grafted inside the crystal (R=Et, nBu: one fragment per window of the supercage; R=Me: 4 fragments per window) are completely modified: (i) iso-octane is completely excluded from the pore channels, due to steric constraints; (ii) n-hexane can only fill the 20 T pore channel system, and (iii) the decrease of the pore volume by grafting the organometallic fragment results in a reduction of the adsorption capacities of n-hexane and benzene.

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