Fixed carrier membrane with slice screening channel and preparation method and application thereof

A fixed carrier and screening technology, which is applied in separation methods, chemical instruments and methods, membranes, etc., can solve problems such as pipeline corrosion and reduce the calorific value of natural gas, and achieve the effects of simple process, high CO2 permeation rate and separation factor

Active Publication Date: 2017-11-24
山西兴源盛科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Natural gas contains a high concentration of CO 2 , reducing the calorific value of natural gas and causing pipeline corrosion

Method used

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  • Fixed carrier membrane with slice screening channel and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The preparation of the immobilized carrier membrane of in-situ loading zeolite imidazolate framework material on the surface of aminated graphene oxide, the steps are as follows:

[0035] Step 1, prepare 1mg / mL graphene oxide dispersion liquid by Hummers method;

[0036] Step 2, followed by in-situ synthesis of ZIF-8 and the amine group modification of graphene oxide in the above-mentioned graphene oxide dispersion, the specific method is: in the dispersion of graphene oxide with a solid content of 10 mg, add 367 mg of hexahydrate Zinc nitrate, ultrasonically mixed for 0.25-2 hours until the solution is uniform, named solution A; 708mg of 2-methylimidazole and 0.5mL ethylenediamine were added to deionized water, magnetically stirred for 2-6 hours until uniformly mixed, named solution B; quickly add solution B to solution A, stir magnetically at 25°C for 24 hours, centrifuge at 5000-20000 rpm for 10-30 minutes, remove supernatant, wash with water 3 times to remove unreac...

Embodiment 2

[0040] Embodiment 2: the preparation of the immobilized carrier film of loading zeolite imidazolate framework material in situ on the surface of aminated graphene oxide, the steps are as follows:

[0041] Step 1, prepare 1 mg / mL graphene oxide dispersion by Hummers method; (same as Example 1)

[0042] Step 2, followed by in-situ synthesis of ZIF-8 and the amine group modification of graphene oxide in the above-mentioned graphene oxide dispersion, the specific method is: in the dispersion of graphene oxide with a solid content of 10 mg, add 367 mg of hexahydrate Zinc nitrate, ultrasonically mixed for 0.25-2 hours until the solution is uniform, named solution A; 708mg of 2-methylimidazole and 0.5mL ethylenediamine were added to deionized water, magnetically stirred for 2-6 hours until uniformly mixed, named solution B; quickly add solution B to solution A, stir magnetically at 25°C for 24 hours, centrifuge at 5000-20000 rpm for 10-30 minutes, remove supernatant, wash with water ...

Embodiment 3

[0046] Embodiment 3: the preparation of the immobilized carrier film of loading zeolite imidazolate framework material in situ on the surface of aminated graphene oxide, the steps are as follows:

[0047] Step 1, prepare 1 mg / mL graphene oxide dispersion by Hummers method; (same as Example 1)

[0048] Step 2, followed by in-situ synthesis of ZIF-8 and the amine group modification of graphene oxide in the above-mentioned graphene oxide dispersion, the specific method is: in the dispersion of graphene oxide with a solid content of 10 mg, add 367 mg of hexahydrate Zinc nitrate, ultrasonically mixed for 0.25-2 hours until the solution is uniform, named solution A; 708mg of 2-methylimidazole and 0.5mL ethylenediamine were added to deionized water, magnetically stirred for 2-6 hours until uniformly mixed, named solution B; quickly add solution B to solution A, stir magnetically at 25°C for 24 hours, centrifuge at 5000-20000 rpm for 10-30 minutes, remove supernatant, wash with water ...

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Abstract

The invention discloses a fixed carrier membrane with a slice screening channel and a preparation method and application thereof. The method comprises the following steps: in-situ synthesizing a zeolite imidazate framework material ZIF-8 in a graphene oxide dispersing solution; chemically acting through ethylenediamine molecule and carboxyl and epoxy group in graphene oxide to realize amination modification of graphene oxide; in-situ loading the zeolite imidazate framework material on the surface of aminated graphene oxide to obtain a product A; adding the product A to a polyvinylamine solution to obtain a uniform membrane casting solution; and then coating the surface of a microfiltration membrane with a layer of functional membrane which is 1-100 microns in thickness. According to the preparation method, the zeolite imidazate framework material ZIF-8 is among the slices of graphene oxide, so that the channel between the graphene oxide slices can be regulated; and a quick transferring channel is provided for the transmission of CO2 during the separating and purifying of the CO2 in mixed gas, so that the CO2 permeation rate is high, and more separating factors are provided.

Description

technical field [0001] The present invention relates to a fixed carrier film with inorganic laminar sieving channels and its preparation method and application, in particular to a method for preparing a fixed carrier film in-situ loaded with a zeolite imidazolate framework material on the surface of aminated graphene oxide The invention belongs to the technical field of chemical engineering gas separation membrane. Background technique [0002] Natural gas contains a high concentration of CO 2 , reducing the calorific value of natural gas and causing pipeline corrosion. Therefore, for the utilization of natural gas, the separation and recovery of CO from natural gas 2 is a very crucial question. Separation of CO 2 The methods mainly include absorption, adsorption, gas hydrate, cryogenic separation and membrane separation. Among them, the membrane separation method is flexible due to its flexible device, simple process, easy operation, low cost, environmental friendlines...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D69/10B01D69/02B01D67/00B01D71/82B01J20/22B01J20/28B01D53/22B01D53/02C10L3/10
CPCB01D53/02B01D53/228B01D53/229B01D67/0079B01D69/02B01D69/10B01D71/82B01D2253/204B01D2257/504B01D2325/12B01J20/226B01J20/28033C10L3/104Y02C20/40
Inventor 王永洪张新儒刘成岑王倩张桃侯蒙杰
Owner 山西兴源盛科技有限公司
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