C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 38/06 (2006.01) B01D 53/22 (2006.01) B01D 71/02 (2006.01) C03C 1/00 (2006.01) C04B 35/14 (2006.01) C04B 35/18 (2006.01) C04B 38/00 (2006.01)
Patent
CA 2146263
A process for preparing a porous amorphous silica-alumina refractory oxide is described in which a source of silica, such as tetra ethyl ortho silicate, in a non-aqueous solvent, such as an alcohol, is hydrolysed by adding an aqueous solution containing aluminium ions, in particular a solution of aluminium nitrate, thereby to form a sol and calcining the sol at, for example, 200 °C to 600 °C. The product, which may have a microporous or mesoporous structure, is useful in the separation of fluids, especially the separation of carbon dioxide from natural gas.
On décrit un procédé, qui permet de préparer un oxyde réfractaire de silice/alumine amorphe poreux, où une source de silice telle que tétra éthyle ortho silicate placée dans un solvant non aqueux tel qu'un alcool, est hydrolysée par adjonction d'une solution aqueuse contenant des ions aluminium, en particulier une solution de nitrate d'aluminium, ce qui permet de constituer un sol, lequel est alors calciné, par exemple entre 200 et 600 C. Ce produit, qui peut présenter une structure microporeuse ou mésoporeuse, est utilie pour séparer des fluides, et notamment le dioxyde de carbone du gaz naturel.
Jones Stephen David
Pritchard Timothy Neil
Bg Plc
Gowling Lafleur Henderson Llp
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