Multicapillary monolith
OwnerFrancois Parmentierinventor
Life of this patent
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Abstract
The invention relates to a monolithic porous material made of amorphous silica or activated alumina, comprising substantially rectilinear capillary channels that are parallel to one another, wherein: the channels have a substantially uniform cross-section relative to each other, the cross-section of each channel is regular over its entire length, the channels pass through the material from end to end, the length of the channels is equal to or more than 10 mm. The invention also relates to an annular, radial or axial chromatographic apparatus, the packing of which consists of at least one said monolithic material. The invention also relates to processes for manufacturing such a monolithic material.
Claims19
A chromatographic column whose packing comprises at least one monolithic porous material, wherein said monolithic porous material comprises a mechanically cohesive mass of silica gel, said cohesive mass further including a plurality of substantially rectilinear capillary channels parallel to one another passing through said porous mass from end to end, wherein:
- the channels have a substantially uniform cross-section relative to each other,
- the cross-section of each channel is regular over its entire length, and
- the length of the channels is equal to or more than 10 mm.
An axial, continuous annular chromatographic apparatus whose packing comprises at least one monolithic porous material including silica gel, said at least one monolithic porous material further including substantially rectilinear capillary channels parallel to one another, wherein:
- the channels have a substantially uniform cross-section relative to each other,
- the cross-section of each channel is regular over its entire length,
- the channels pass through the material from end to end,
- the length of the channels is equal to or more than 10 mm.
A chromatographic column whose packing comprises at least one monolithic porous material, wherein said monolithic porous material comprises a mechanically cohesive mass of silica gel, wherein the mechanically cohesive mass further includes a plurality of substantially rectilinear capillary channels parallel to one another passing through said porous mass from end to end, wherein:
- the channels have a substantially uniform cross-section relative to each other, the mean diameter of a channel not differing by more than 30% from the average of the diameters of the channels,
- the cross-section of each channel is regular over its entire length, the diameter of a channel not varying by a factor of more than 2 between the narrowest regions and the widest regions of said channels, and
- the length of the channels is equal to or more than 10 mm.
Dependencies are inferred from the claim text.