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MoS2/organic silicon blended matrix membrane, preparation method and application thereof

A technology of organosilicon and organosilicon sol, which is applied in the field of membrane separation, can solve the problems of bonding to prepare separation membranes, no active groups, no permeability and selective separation membranes, etc., to improve permeation selectivity and promote permeation The effect of passing and increasing the permeation flux

Pending Publication Date: 2021-12-31
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But MoS 2 There are no active groups on the surface, it is difficult to bond with the support to prepare a stable separation membrane, and pure MoS 2 Membranes are faced with the problem of large-area defect-free preparation, and it is necessary to modify the defects to obtain membranes with higher separation performance
[0003] Currently there is no H 2 Permeable and Selective Separation Membranes

Method used

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  • MoS2/organic silicon blended matrix membrane, preparation method and application thereof
  • MoS2/organic silicon blended matrix membrane, preparation method and application thereof
  • MoS2/organic silicon blended matrix membrane, preparation method and application thereof

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preparation example Construction

[0033] The embodiment of the present invention provides a kind of MoS 2 / The preparation method of organosilicon blend matrix film, comprises the following steps:

[0034] Step 1: Preparation of organosilicon sol by hydrolytic polymerization of organoalkoxysilane:

[0035] Mix organoalkoxysilane, water and catalyst in ethanol evenly, wherein the molar ratio of organoalkoxysilane to water and catalyst is 1:10~300:0.1~0.8, and organoalkoxysilane is mixed in organoalkoxysilane , water, catalyst, and ethanol in a mixed solution with a content of 2.0-5.0 wt.%, and after stirring at 20-60° C. for 1-5 hours, the organosilicon sol is obtained.

[0036] Organoalkoxysilanes selected from bis(triethoxysilyl)methane (BTESM), 1,2-bis(triethoxysilyl)ethane (BTESE), 1,3-bis(triethoxy One or more of silyl) propane (BTESP).

[0037] The catalyst contains H + acidic catalyst.

[0038] Step 2: Put MoS 2 Preparation of MoS by uniform mixing of dispersion liquid and organosilica sol 2 / Sil...

Embodiment 1

[0052] (1) prepare organosilicon sol, the BTESE of 1.0g is dissolved in the ethanol of 15.9g, then add the water of 3.0g and the massfraction of 0.1g be the HCl of 35wt.%, form uniform 5.0wt.%BTESE solution, Then put it in a 40°C water bath and stir for 5h to prepare the BTESE sol.

[0053] (2) First, 9.5 g of ethanol was added to 9.5 g of water to form a 50% ethanol / water mixture with a total mass of 19.0 g. 1.0g of MoS 2 Added to the above solution by ultrasonic dispersion to form 5.0 wt.% MoS 2 solution. Then take 1.0 g of 5.0 wt% MoS 2 Solution, then add 2.0g of 5.0wt.% BTESE sol in step (1), and finally add 7.0g of ethanol and ultrasonic 30min to obtain MoS 2 / BTESE dispersion. in MoS 2 / BTESE dispersion, MoS 2 The content of BTESE is 0.5wt.%, the content of BTESE is 1.0wt.%.

[0054] (3) Preparation of the support body: use the wiping method to coat the sheet ceramic carrier with SiO 2 -ZrO 2 Sol modification, drying at room temperature for five minutes after r...

Embodiment 2

[0060] (1) prepare organosilicon sol, the BTESE of 1.0g is dissolved in the ethanol of 15.9g, then add the water of 3.0g and the massfraction of 0.1g be the HCl of 35wt.%, form uniform 5.0wt.%BTESE solution, Then put it in a 40°C water bath and stir for 5h to prepare the BTESE sol.

[0061] (2) First, 9.5 g of ethanol was added to 9.5 g of water to form a 50% ethanol / water mixture with a total mass of 19.0 g. 1.0g of MoS 2 Added to the above solution by ultrasonic dispersion to form 5.0 wt.% MoS 2 solution. Then take 1.0g of 5.0wt.% MoS 2 Solution, then add 1.0g of 5.0wt.% BTESE sol in step (1), and finally add 3.0g of ethanol and ultrasonic for 30min to obtain MoS 2 / BTESE dispersion. in MoS 2 / BTESE dispersion, MoS 2 The content of BTESE is 1.0wt.%, and the content of BTESE is 1.0wt.%.

[0062] (3) Preparation of the support body: use the wiping method to coat the sheet ceramic carrier with SiO 2 -ZrO 2 Sol modification, drying at room temperature for five minutes ...

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Abstract

The invention belongs to the technical field of blended matrix membrane separation, and particularly relates to a MoS2 / organic silicon blended matrix membrane, a preparation method and an application thereof, and the method comprises the following steps: preparing organic silicon sol from organic alkoxy silane through a hydrolytic polymerization method; uniformly mixing the MoS2 dispersion liquid with organic silicon sol to prepare MoS2 / organic silicon dispersion liquid; and coating the support body with the MoS2 / organic silicon dispersion liquid, and calcining to obtain the MoS2 / organic silicon blended matrix membrane. The MoS2 / organic silicon blended matrix membrane prepared by the method has good H2 permeability and selectivity, and can be applied to separation of hydrogen in mixed gas.

Description

technical field [0001] The invention belongs to the technical field of membrane separation, in particular to a MoS 2 / Organosilicon blend matrix film, preparation method and application. Background technique [0002] The organic silicon membrane is a silica-based membrane connected by organic groups that are hydrolyzed and polymerized by organoalkoxysilanes. Similar to pure silica membranes, the bridging organic groups introduced by it make the membrane structure looser and enhance the resistance to water. repulsion, better hydrothermal stability and H 2 permeability. However, the pore size of the bridged silicone membrane is generally between 0.44-0.83nm, which is larger than that of CO 2 , CO, N 2 The molecular dynamics diameter of , thus bridging the organosilicon membrane to H 2 selectivity is reduced. MoS 2 Due to the unique sheet structure, good physical and chemical properties and activation of H 2 It has great advantages in the field of gas separation membran...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D69/14B01D67/00B01D53/22
CPCB01D69/148B01D67/0079B01D53/228B01D2257/108
Inventor 任秀秀姚政于欢钟璟徐荣郭猛吴楠桦
Owner CHANGZHOU UNIV
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