Ordered mesoporous aluminosilicates with very low Si/Al ratio and stable tetrahedral aluminum sites for catalysis

Xiao Yu Yang; Aurélien Vantomme; Feng Shou Xiao; Bao Lian Su

doi:10.1016/j.cattod.2007.07.017

Ordered mesoporous aluminosilicates with very low Si/Al ratio and stable tetrahedral aluminum sites for catalysis

Xiao Yu Yang, Aurélien Vantomme, Feng Shou Xiao, Bao Lian Su

Universite de Namur

Résultats de recherche: Contribution à un journal/une revue › Article › Revue par des pairs

Résumé

New and ordered 2D-hexagonal (p6mm) mesoporous aluminosilicates (CMI-11) have been synthesized in strongly alkaline media using aluminosilicate ester ((Bu^sO)₂-Al-O-Si-(OEt)₃) as single-source molecular precursor and CTMABr as surfactant and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), N₂ adsorption-desorption and ²⁷Al and ²⁹Si MAS NMR spectroscopy. These mesoproous aluminosilicates exhibit a very low Si/Al ratio of 1.9 and highly thermal stable tetrahedral aluminum sites in the mesoporous walls. ²⁷Al and ²⁹Si MAS NMR spectroscopy indicates that the pore walls of CMI-11 are fully condensed with molecular homogeneity of Si-O-Al linkage. These materials are highly important in catalysis, in particular for the petroleum processing and the bulky molecules treatment.

langue originale	Anglais
Pages (de - à)	123-128
Nombre de pages	6
journal	Catalysis Today
Volume	128
Numéro de publication	3-4
Les DOIs	https://doi.org/10.1016/j.cattod.2007.07.017
Etat de la publication	Publié - 30 oct. 2007

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10.1016/j.cattod.2007.07.017

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@article{ec1f0d3c34b04e4a8c920c89eae2acd2,

title = "Ordered mesoporous aluminosilicates with very low Si/Al ratio and stable tetrahedral aluminum sites for catalysis",

abstract = "New and ordered 2D-hexagonal (p6mm) mesoporous aluminosilicates (CMI-11) have been synthesized in strongly alkaline media using aluminosilicate ester ((BusO)2-Al-O-Si-(OEt)3) as single-source molecular precursor and CTMABr as surfactant and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), N2 adsorption-desorption and 27Al and 29Si MAS NMR spectroscopy. These mesoproous aluminosilicates exhibit a very low Si/Al ratio of 1.9 and highly thermal stable tetrahedral aluminum sites in the mesoporous walls. 27Al and 29Si MAS NMR spectroscopy indicates that the pore walls of CMI-11 are fully condensed with molecular homogeneity of Si-O-Al linkage. These materials are highly important in catalysis, in particular for the petroleum processing and the bulky molecules treatment.",

keywords = "Al-O-Si linkage, Aluminosilicate ester, Mesoporous aluminosilicate, Molecular homogeneity, Strong alkaline condition, Synthesis",

author = "Yang, {Xiao Yu} and Aur{\'e}lien Vantomme and Xiao, {Feng Shou} and Su, {Bao Lian}",

year = "2007",

month = oct,

day = "30",

doi = "10.1016/j.cattod.2007.07.017",

language = "English",

volume = "128",

pages = "123--128",

journal = "Catalysis Today",

issn = "0920-5861",

publisher = "Elsevier",

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T1 - Ordered mesoporous aluminosilicates with very low Si/Al ratio and stable tetrahedral aluminum sites for catalysis

AU - Yang, Xiao Yu

AU - Vantomme, Aurélien

AU - Xiao, Feng Shou

AU - Su, Bao Lian

PY - 2007/10/30

Y1 - 2007/10/30

N2 - New and ordered 2D-hexagonal (p6mm) mesoporous aluminosilicates (CMI-11) have been synthesized in strongly alkaline media using aluminosilicate ester ((BusO)2-Al-O-Si-(OEt)3) as single-source molecular precursor and CTMABr as surfactant and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), N2 adsorption-desorption and 27Al and 29Si MAS NMR spectroscopy. These mesoproous aluminosilicates exhibit a very low Si/Al ratio of 1.9 and highly thermal stable tetrahedral aluminum sites in the mesoporous walls. 27Al and 29Si MAS NMR spectroscopy indicates that the pore walls of CMI-11 are fully condensed with molecular homogeneity of Si-O-Al linkage. These materials are highly important in catalysis, in particular for the petroleum processing and the bulky molecules treatment.

AB - New and ordered 2D-hexagonal (p6mm) mesoporous aluminosilicates (CMI-11) have been synthesized in strongly alkaline media using aluminosilicate ester ((BusO)2-Al-O-Si-(OEt)3) as single-source molecular precursor and CTMABr as surfactant and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), N2 adsorption-desorption and 27Al and 29Si MAS NMR spectroscopy. These mesoproous aluminosilicates exhibit a very low Si/Al ratio of 1.9 and highly thermal stable tetrahedral aluminum sites in the mesoporous walls. 27Al and 29Si MAS NMR spectroscopy indicates that the pore walls of CMI-11 are fully condensed with molecular homogeneity of Si-O-Al linkage. These materials are highly important in catalysis, in particular for the petroleum processing and the bulky molecules treatment.

KW - Al-O-Si linkage

KW - Aluminosilicate ester

KW - Mesoporous aluminosilicate

KW - Molecular homogeneity

KW - Strong alkaline condition

KW - Synthesis

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U2 - 10.1016/j.cattod.2007.07.017

DO - 10.1016/j.cattod.2007.07.017

M3 - Article

AN - SCOPUS:35248845668

SN - 0920-5861

VL - 128

SP - 123

EP - 128

JO - Catalysis Today

JF - Catalysis Today

IS - 3-4

ER -

Ordered mesoporous aluminosilicates with very low Si/Al ratio and stable tetrahedral aluminum sites for catalysis

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