Separation membrane-porous material composite and method for manufacturing the same

A porous material and separation membrane technology, applied in separation methods, semi-permeable membrane separation, dispersed particle separation, etc., can solve problems such as low flow rate and poor selectivity

Active Publication Date: 2009-09-16
NGK INSULATORS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it has been found that for industrially useful species with relatively small molecular weights, such as CO 2 / CH 4 , N 2 / O 2 and water / EtOH, the selectivity tends to be poor
Additionally, it has been realized that low flow due to the effect of pressure loss due to silica sol

Method used

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  • Separation membrane-porous material composite and method for manufacturing the same
  • Separation membrane-porous material composite and method for manufacturing the same
  • Separation membrane-porous material composite and method for manufacturing the same

Examples

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Effect test

example 1

[0056] Although formed by extrusion and sintering, a substrate having a monolithic shape with an average particle diameter of 10 to 100 μm and an average pore diameter of 1 to 30 μm was prepared. Next, on the inner wall surface of the basal cell, aluminum microparticles having an average particle diameter of 0.3 to 10 μm are deposited by a filtration film forming method, followed by sintering to form a middle layer having a thickness of 10 to 1000 μm and an average pore size of 0.1 to 3 μm. Floor. On the intermediate layer, aluminum particles having an average particle diameter of 0.3 to 1 μm are further deposited by a filter film forming method, followed by sintering to form a dense layer having a thickness of 1 to 100 μm and an average pore diameter of 0.01 to 0.5 μm. A porous material is thus obtained.

[0057] Next, use figure 1 with 2 In the device 10 shown in , helium gas with a pressure of 1 kPa is injected into the pores of the porous material, and through the insid...

example 2

[0060] A separation membrane-porous material composite was prepared in the same manner as in Example 1 except that the inside of the pores was pressurized with helium gas having a pressure of 50 kPa and injected into the pores of the porous material. The separation membrane-porous material composite was evaluated by the water-ethanol pervaporation method under the same conditions as in Example 1. Table 1 shows the precursor solution consumption and pervaporation performance (separation factor and flow rate) for forming carbon thin films.

example 3

[0062] A separation membrane-porous material composite was prepared in the same manner as in Example 1 except that the inside of the pores was pressurized with helium gas having a pressure of 100 kPa and injected into the pores of the porous material. The separation membrane-porous material composite was evaluated by the water-ethanol pervaporation method under the same conditions as in Example 1. Table 1 shows the precursor solution consumption and pervaporation performance (separation factor and flow rate) for forming carbon thin films.

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Abstract

A separation membrane-porous material composite (1) being improved in flux and selectivity, which comprises a porous ceramic material and a separation membrane formed on the porous material, wherein a composite layer (65) having a thickness of 1 mm or less is provided at the interface between the porous material (61) as a dense layer (64) and the separation membrane (66) being formed as a carbonaceous film while maintaining an increased pressure inside the porous material to avoid penetration of the carbon layer precursor into the pores.

Description

technical field [0001] The present invention relates to a separation membrane-porous material composite having a porous material and a separation membrane formed on the surface of the porous material, and to a method for producing the separation membrane-porous material composite. Background technique [0002] At the molecular level, there is a technical need for the selective separation of a specific substance (such as a gas) from a mixture of many substances (such as a gas). As a filter that meets the above requirements, filters using polysulfone, silicon, polyamide, polyimide, etc. as a separation membrane are generally known. [0003] However, since the separation membranes of these materials are polymer resins, there is a problem that limited mixtures are subjected to separation because the films tend to change in quality and deteriorate when the mixture contains an organic solvent. [0004] Therefore, in recent years, a filter having a carbon thin film as a separation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/22B01D63/06B01D69/12B01D71/02B01D67/00
CPCB01D53/228B01D2323/10B01D63/066B01D69/125B01D71/021B01D67/0067B01D69/12B01D2323/42
Inventor 市川明昌武野省吾野野川正巳
Owner NGK INSULATORS LTD
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