Composite DDR type zeolite film, and method for preparation thereof

一种制造方法、复合物的技术，应用在气体分离装置,DDR型沸石膜复合物及其制造,DDR型沸石膜的制造领域，能够解决不能确保气体透过量、压力损失变大等问题

Inactive Publication Date: 2008-11-12
NGK INSULATORS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the zeolite membrane composite composed as above is used as a gas separation membrane, since the thickness of the zeolite membrane composite is too thick, the pressure loss becomes large, and a sufficient gas permeation rate cannot be ensured.

Method used

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  • Composite DDR type zeolite film, and method for preparation thereof
  • Composite DDR type zeolite film, and method for preparation thereof
  • Composite DDR type zeolite film, and method for preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0150] 1.80 g of ethylenediamine (Wako Pure Chemical Industries Co., Ltd.) was put into a 100 ml jar made of fluororesin, and then 0.57 g of 1-adamantanamine (Katayama Chemical Industry Co., Ltd.) was added and dissolved until no 1 - Precipitated residue of amantadine. Add 73.45 g of water to another beaker, add 3.0 g of 30% by mass silica sol (Snowtex S, Nissan Chemical Co., Ltd.), stir gently, and then add it to a wide-mouthed mixture of ethylenediamine and 1-adamantanamine bottle and shake vigorously to make stock solution. At this time, 1-adamantanamine / SiO 2 The ratio of water / SiO is 0.25 2 The ratio of 280, ethylenediamine / 1-amantadine ratio of 8.

[0151] The jar filled with the raw material solution was placed on a shaker, and shaken and mixed at 500 rpm for another 1 hour. Then, 0.1 mg of the DDR-type zeolite powder obtained by the above-mentioned method for producing DDR-type zeolite powder was added as a seed crystal, and the mixture was kept at 65° C. and ult...

Embodiment 2-12、 comparative example 1-3

[0155] Except for changing the composition ratio of the raw material solution and the heat treatment conditions, the same operation as in Example 1 was carried out, and an attempt was made to form a DDR type zeolite membrane. In the same manner as in Example 1, the obtained film was evaluated by X-ray diffraction, and the film thickness was measured by observation with an electron microscope. The composition ratio of the raw material solution (1-adamantanamine / SiO 2 ratio, water / SiO 2 ratio and ethylenediamine / 1-adamantanamine ratio), heat treatment conditions (temperature, time) and the film thickness of the formed DDR zeolite membrane are shown in Table 1.

Embodiment 13

[0160] Except for using 1.50 g of ethylenediamine, 0.47 g of 1-adamantanamine, 2.50 g of 30% by mass silica sol, and 48.70 g of water, the same operation as in Example 1 was carried out to prepare a raw material solution. At this time, 1-adamantanamine / SiO 2 The ratio is 0.25, water / SiO 2 The ratio was 220 and the ethylenediamine / 1-adamantanamine ratio was 8.

[0161] A porous alumina body with an average pore diameter of 0.6 μm (Nippon Yasuko Co., Ltd.) was processed into A disc-shaped porous matrix, as a porous matrix. The DDR-type zeolite powder obtained by the above-mentioned method for producing DDR-type zeolite powder was used as a seed crystal, which was added to water to prepare a dispersion liquid with a concentration of 1 mg / ml, which was applied dropwise on one side of the porous substrate. This porous substrate was vertically placed in a stainless steel pressure vessel having an internal volume of 100 ml of a fluororesin inner cylinder, and immersed in the ra...

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Abstract

The invention provides a DDR type zeolite membrane, characterized in that the DDR type zeolite membrane has porous substrates and DDR type zeolite layer in the substrate micropore. Thickness of the DDR type zeolite is 5 to 50 fold of average micropore diameter of the porous substrate; the DDR type zeolite layer is formed by the DDR type zeolite depositing in the micropore of at least one side surface of the porous substrate.

Description

[0001] This application is a divisional application of the following applications: application number: 02822549.X (PCT / JP02 / 09480); application date: September 17, 2002; title of invention: "Manufacturing method of DDR type zeolite membrane, DDR type zeolite membrane and DDR-type zeolite membrane composites and methods for their manufacture". technical field [0002] The present invention (first invention) relates to a method for producing a DDR type zeolite membrane. More specifically, the present invention relates to a method for producing a DDR-type zeolite membrane having a thickness suitable for industrial use in a simple and short period of time. [0003] Also, the present invention (second invention) relates to a DDR-type zeolite membrane, a gas separation method, and a gas separation device. More specifically, the present invention relates to a DDR-type zeolite membrane capable of separating one or more specific gas components from a mixed gas containing two or more s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/02C01B37/02B01DC01B
Inventor 中山邦雄铃木宪次吉田学谷岛健二富田俊弘
Owner NGK INSULATORS LTD
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