Compositions and methods for preparing porous metal oxides

C - Chemistry – Metallurgy – 01 – B

Patent

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C01B 37/00 (2006.01) C01B 13/32 (2006.01) C01B 37/02 (2006.01) C01F 17/00 (2006.01) C01G 23/053 (2006.01) C01G 25/02 (2006.01) C01G 33/00 (2006.01) C01G 35/00 (2006.01)

Patent

CA 2268090

The present invention relates to a composition and a method for producing hexagonally-packed mesoporous metal oxides wherein the metal oxide is selected from transition metals and lanthanide metals. The composition includes hexagonally packed metal oxide mesostructures that are resistant to pore collapse upon removal of surfactant and are thermally stable. The composition can include a surfactant complexed with the metal. Also described are methods for producing the hexagonally-packed mesoporous metal oxides. The present invention also relates to compositions and methods for producing porous metal oxides. The compositions include microporous and mesoporous metal oxides that are resistant to pore collapse upon removal of surfactant and are thermally stable. Also described are methods for producing microporous metal oxides.

L'invention concerne une composition et un procédé permettant de produire des oxydes métalliques mésoporeux à empilement hexagonal, dans lesquels l'oxyde métallique est choisi parmi les métaux de transition et les lanthanides. La composition comprend des mésostructures d'oxydes métalliques à empilement hexagonal, qui résistent à l'écrasement des pores après élimination du tensioactif et qui sont thermiquement stables. La composition peut comprendre un tensioactif formant un complexe avec le métal. L'invention décrit également des procédés permettant de produire lesdits oxydes métalliques mésoporeux à empilement hexagonal. Elle concerne aussi des compositions et des procédés permettant de produire des oxydes métalliques poreux. Les compositions contiennent des oxydes métalliques microporeux et mésoporeux, qui résistent à l'écrasement des pores après élimination du tensioactif et qui sont thermiquement stables. L'invention décrit aussi des procédés permettant de produire des oxydes métalliques microporeux.

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