Nanoporous detectors of monocyclic aromatic compounds and...

C - Chemistry – Metallurgy – 08 – L

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C08L 83/04 (2006.01) B01J 20/10 (2006.01) B01J 20/26 (2006.01) B01J 20/283 (2006.01) C03B 19/12 (2006.01) C03C 1/00 (2006.01) C08J 3/075 (2006.01) G01N 1/22 (2006.01) G01N 21/33 (2006.01) G01N 21/64 (2006.01) G01N 21/78 (2006.01) G01N 21/79 (2006.01) G01N 33/00 (2006.01)

Patent

CA 2730527

Porous sol-gel material essentially consisting of units of one or more first polyalkoxysilanes chosen from the following compounds: (chloro­methyl)triethoxysilane; 1,3-dimethyltetramethoxydisiloxane; ethyltri­methoxysilane; triethoxy(ethyl)silane; triethoxymethylsilane; triethoxy­(vinyl)silane; trimethoxymethylsilane; trimethoxy(vinyl)silane; tetra­ethoxysilane or tetramethoxysilane (TMOS) and of units of one or more second polyalkoxysilanes chosen from the following compounds: (N-(3-(trimethoxysilyl)propyl)ethylenediamine; 3-aminopropyltriethoxysilane (APTES) and 3-aminopropyltrimethoxysilane, in a first polyalkoxy­silane/second polyalkoxysilane molar ratio of 1/0.01 to 1/1, optionally comprising a probe molecule, method of preparation and applications in the trapping of monocyclic aromatic hydrocarbons and other pollutants or in their detection.

Matériau sol-gel poreux essentiellement constitué d'unités d'un ou plusieurs premier(s) polyalcoxysilane(s) choisi(s) parmi les composés suivants : le (chlorométhyl)triéthoxysilane; le 1,3 - diméthyltetraméthoxydisiloxane; l'éthyltriméthoxysilane; le triéthoxy(éthyl)silane; le triéthoxyméthylsilane; le triéthoxy(vinyl)silane; le triméthoxyméthylsilane; le triméthoxy(vinyl)silane; le tétraéthoxysilane ou le tétraméthoxysilane (TMOS) et d'unités d'un ou plusieurs second(s) polyalcoxysilane(s) choisi(s) parmi les composés suivants: le (N-(3-(triméthoxysilyl)propyl)éthylènediamine; le 3- aminopropyltriéthoxysilane (APTES) et le 3-aminopropyltriméthoxysilane, dans un rapport molaire premier(s) polyalcoxysilane(s)/ second(s) polyalcoxysilane(s) de 1 /0,01 à 1/1, comprenant éventuellement une molécule sonde, procédé de préparation et applications dans le piégeage d'hydrocarbures aromatiques monocycliques ainsi que d'autres polluants ou dans leur détection.

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