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Monolith

A pre-material and solvent technology, which is applied in the field of providing monoliths with multiple channels and filtering water, which can solve problems such as lack of elasticity

Inactive Publication Date: 2017-03-22
IMPERIAL INNOVATIONS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the methods used provide hollow fibers alone which lack the necessary resilience for certain applications

Method used

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Examples

Experimental program
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Embodiment 1

[0080] Porous ceramic monoliths were prepared as follows. The suspension was prepared using: alumina (60 wt%) with an average particle diameter of 1 micron, DMSO (33.6 wt%) as solvent, and PESf (6 wt%) as polymer binder, and Arlacel as dispersant P135 (polyethylene glycol 30-dipolyhydroxystearate, Uniqema) (0.4 wt%).

[0081] This suspension was extruded through a 7-channel spinneret at a rate of 7 ml / min, a water flow rate of 12 ml / min and an air gap of 0.5 cm. This forms a 7-channel monolith, which is then sintered at 1350°C. Then the fracture load (fracture loading) of this sample was tested, and the results were as follows:

[0082]

[0083] The as-prepared structure was investigated with SEM. The product was found to be a uniform 7-channel hollow fiber. The structure is self-organized microchannels throughout the fibers with spongy layers between microchannel layers. In addition, there is a skin-like spongy layer at the channel surface and outer surface, uniform c...

Embodiment 2

[0088] Porous ceramic monoliths were prepared as follows. The suspension was prepared using: 1 micron average particle diameter alumina (62 wt%), NMP (31.4 wt%) as solvent, PESf (6.2 wt%) as polymer binder, dispersant (0.4 wt%) .

[0089] This suspension was extruded through a 19-channel spinneret at a speed of 11 ml / min, water flow: 18 ml / min, and without air gaps. This forms a 19-channel monolith, which is then sintered at 1350°C. The breaking load of this sample was then tested, and the results were as follows:

[0090]

[0091] The mercury porosimetry profile shows a slightly more porous channel surface (0.55 microns) through which catalyst or adsorbent can be deposited, with another peak still at 0.18 microns.

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Abstract

The present invention relates to a method of making a monolith having a plurality of channels extending therethrough, the method comprising, providing a suspension of polymer-coated particles in a first solvent; extruding the suspension from a primary orifice, while passing one or more second solvents from a plurality of secondary orifices arranged within the first orifice, into a third solvent, whereby a monolith precursor is formed from the polymer and particles, and sintering the monolith precursor to form a monolith.

Description

technical field [0001] The present invention relates to a method for forming a monolith, preferably a ceramic monolith, to an apparatus (apparatus) for preparing said monolith in a single process, and to the use of this material for , such as filtering, especially water, and using the material as a support for: catalysts, adsorbents and membranes. In particular, the invention relates to methods for providing a monolith having a plurality of channels therein. Background technique [0002] Ceramic membranes are widely used in microfiltration and ultrafiltration. This is due to their various advantages over polymer membranes (polymer counterparts). The advantages include greater mechanical strength and structural rigidity, greater corrosion resistance and heat resistance, stable operating characteristics during long-term use, and backward flow by calcination or by water or a suitable solvent And the possibility of multiple regenerations. This means that ceramic membranes ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/20B01J35/10B01J32/00B29C47/88B29C47/92B29C47/00B29C47/30B22F1/102B29C48/05B29C48/11B29C48/12B29C48/30B29C48/345B29C48/92
CPCB29C48/345B29C48/92B29C48/0022B29C48/919B29C48/30B01D39/2034B01D39/2075B01D2239/10B01D2239/086B29C2948/926B22F1/102B01J35/60B01D67/0039B01D71/024B01D63/066B01D67/0046B01D69/00B01D69/085B28B3/269C04B38/00B01D2323/42C04B33/04C04B35/111C04B35/14C04B35/195C04B35/46C04B35/486C04B35/50C04B35/565C04B2235/3225C04B2235/3229C04B2235/6021C04B2235/6584C04B2235/661C04B2235/94C04B2235/95C04B2235/96B28B3/2636C04B2111/00793C04B2111/00801C04B2111/0081B22F3/227B22F5/10B29C48/05C04B38/0038B01J20/08B01J20/28042B01J20/28083B01J20/28085B01J20/3007B01J20/3042B01J20/3078B29C48/11B29C48/12B01J35/56C04B35/10C04B35/48C04B38/0051B01J37/00B22F3/20B01J35/647B01J35/651B01D2325/10B01J21/04B01J37/0018B01J37/082C04B35/6264C04B35/62802C04B35/63488C04B35/638C04B35/64C04B38/0615C04B38/0635C04B2235/3217C04B2235/48C04B2235/549C04B2235/656
Inventor 李康吴振涛
Owner IMPERIAL INNOVATIONS LTD
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