Zeolite separation membrane, process for producing the same, and binder
A manufacturing method and adhesive technology, applied in the direction of semi-permeable membrane separation, chemical instruments and methods, membranes, etc., can solve the problems of long operation time and technical level, and achieve the effect of maintaining air tightness and reducing usage
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Embodiment 1
[0038] 1) Bonding of ceramic porous tubes and joining members
[0039] (a) at image 3 In order to seal the porous ceramic tube (1) (alumina 99%, outer diameter 16mmφ, inner diameter 12mmφ), the glass ring (2) obtained by compressing and molding glass powder is interposed between one end of the tube (1) and the sealing plug (3) between (dense alumina) (see image 3 a). The composition of the glass powder used here is shown in B in Table 2. Next, this was baked at 900° C. for 1 hour to obtain a structure in which one end of the tube ( 1 ) was sealed.
[0040] (b) After that, in order to improve the strength and airtightness of the junction of one end of the ceramic porous tube (1) and the sealing plug (3), the junction is immersed in a slurry of glass powder (composition: B in Table 2) ( Glass powder: 50wt%, solvent: ethanol) and drying (see image 3 b). Next, this was fired at 900° C. for 1 hour, thereby producing a structure in which the outer surface of the junction wa...
Embodiment 2
[0058] The effect of adding stabilized zirconia to glass powder was examined by the following method.
[0059] In "1) Bonding of the ceramic porous tube and the bonding material" in Example 1, as the glass powder for the binder and the glass powder for the coating, the glass (composition: B in Table 2) added A zeolite separation membrane was produced in the same manner as in Example 1 except that a predetermined amount of yttrium-stabilized zirconia (HYS-8 manufactured by Daiichi Zenen Chemical Industry Co., Ltd.) was present. The same method as in Example 1 was carried out on the membrane in an ethanol / water immersion vaporization test (separation coefficient).
[0060] Table 1 shows the above test results.
[0061] [Table 1]
[0062] Zirconia addition
[0063] From the above results, it can be seen that the performance (separation coefficient) of the zeolite separation membrane is improved when the amount of stabilized zirconia added to the glass is 20% by weight...
Embodiment 3
[0065] The effect of glass powder composition on film properties was investigated in the following manner.
[0066] In "1) Bonding of the ceramic porous tube and the bonding material" in Example 1, the composition of the glass powder for the binder and the glass powder for the coating were changed as shown in Table 2, and the same procedure as in Example 1 was performed except that The same operation was performed to produce a zeolite separation membrane. With respect to the film, the same method as in Example 1 was used to conduct an ethanol / water permeation vaporization test (separation coefficient). Table 3 shows the above test results.
[0067] From the above results, it can be seen that in the compositions A to D, the glass seal of the junction has extremely high airtightness and has a structure that hardly affects the zeolite separation membrane.
[0068] [Table 2]
[0069]
[0070] [table 3]
[0071] Types of coated glass
PUM
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