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Preparation method of a low-cost low-density catalytic functional ceramic membrane

A ceramic membrane and low-density technology, applied in the field of ceramic membrane preparation, can solve the problems of complex inorganic ceramic membrane preparation process, heavy metal pollution in water, uneven pore size distribution, etc., achieve excellent water permeability, uniform pore size, and improve pore size The effect of uneven distribution

Active Publication Date: 2021-08-06
HARBIN INST OF TECH AT WEIHAI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that existing organic membrane materials have low strength, easily deformed aperture, poor chemical stability, easy pollution, difficult cleaning, short service life and complex preparation process of inorganic ceramic membranes, high preparation cost, high density, The uneven pore size distribution and the loss of catalyst particles during use and backwashing will cause the problem of heavy metal pollution in water, and provide a low-cost and low-density catalytic functional ceramic membrane preparation method

Method used

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  • Preparation method of a low-cost low-density catalytic functional ceramic membrane
  • Preparation method of a low-cost low-density catalytic functional ceramic membrane
  • Preparation method of a low-cost low-density catalytic functional ceramic membrane

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specific Embodiment approach 1

[0023] DETAILED DESCRIPTION OF THE INVENTION The present embodiment is a method of preparing a low-cost low density catalytic functional ceramic membrane, which is done by following:

[0024] First, prepare high efficiency catalytic active particles:

[0025] As the metal organic frame compound as a carrier, the transition metal particles are fixed in the carrier using a solvent heat method, and then the ball mill is ground, sieved, and the efficient catalytic active particles are obtained;

[0026] Second, prepare ceramic membrane materials:

[0027] The ceramic film raw material powder, highly efficiently catalyzed active particles, binders, aperture, water and glycerol were added to the mixture to obtain a mixture;

[0028] In the mixture described in step II, the ceramic membrane material powder, highly efficiently catalyzes the active particles, the binder, the aperture, water and glycerol (85 to 15): (10 to 15): (10 ~ 15) : (10 ~ 15): (75 ~ 85): (3 ~ 8);

[0029] Ceramic mem...

specific Embodiment approach 2

[0037] DETAILED DESCRIPTION OF THE INVENTION Different from the specific embodiment of the present embodiment, the metal organic frame compound described in step one is UIO-66 or NH. 2 -UIO-66. Other steps are the same as specific embodiments.

[0038] The UIO-66 according to the present embodiment is synthesized by the following steps:

[0039] 1, 5G ZrCl 4 Add to 200 mLDMF (N, N-dimethylformamide), then 40 ml of mass fraction of 37% concentrated hydrochloric acid, and then ultrasonically 20min;

[0040] 2, after the end of the ultrasound, 400 ml DMF and 4.92 g of terephthalic acid were added, and then the echo was 20 min to obtain reaction liquid;

[0041] 3, heat the reaction liquid at a 90 ° C water bath, a layered, naturally cooled to room temperature, and pour it off the supernatant to obtain a solid matter;

[0042] 4, using DMF as a cleaning agent, the solid substance is cleaned at a centrifugal speed of 8000 r / min, and then the supernatant is removed, and the solid matt...

specific Embodiment approach 3

[0052] DETAILED DESCRIPTION OF THE INVENTION 3: The present embodiment and the specific embodiment one or two of the specific embodiment are: the transition metal particles described in the step one (NO " 3 ) 3 CE (NO 3 ) 3 , Cu (NO 3 ) 2 , Fe (NO 3 ) 3 CR (NO 3 ) 3 And Co (NO 3 ) 2 One or several of the mixture of several of them. Other steps are identical to those of the specific embodiments.

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Abstract

The invention discloses a method for preparing a low-cost and low-density catalytic functional ceramic membrane, which relates to a method for preparing a ceramic membrane. The purpose of the present invention is to solve the problem that existing organic membrane materials have low strength, easy deformation of aperture, poor chemical stability, easy pollution, difficult cleaning, short service life, complex preparation process of inorganic ceramic membrane, high preparation cost, high density, The uneven pore size distribution and the loss of catalyst particles during use and backwashing will cause the problem of heavy metal pollution in water. Method: 1. Preparation of high-efficiency catalytic active particles; 2. Preparation of ceramic membrane raw materials; 3. Static staleness, followed by mud refining; 4. Forming; 5. Drying and sintering to obtain low-cost and low-density catalytic functional ceramic membranes. The low-cost and low-density catalytic functional ceramic membrane prepared by the invention is suitable for treating sewage.

Description

Technical field [0001] The present invention relates to a method of preparation of a ceramic membrane. Background technique [0002] With the continuous growth of my country's population and industrialization, water pollution caused by industrialization has a serious impact on the lives of residents. For some small molecules, difficult degradation, high toxic environmental pollutants, water plants traditional coagulation - clarification - filtration - sterilization mode is difficult to completely remove. In recent years, membrane separation technology, catalytic degradation technology, advanced oxidation techniques, etc., due to high efficiency, wuxtaphysics, can replace traditional water treatment mode techniques or can be used as a conventional pattern, so in the water body Pollution, especially in terms of difficult degradation pollutants, has broad application prospects. However, the current film material market is mainly organic polymer film materials, the strength of the or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/02B01D67/00B01D69/02B01D69/06
CPCB01D67/0039B01D69/02B01D69/06B01D71/02B01D71/025B01D2325/10
Inventor 马军张瑛洁杨智伟程喜全王凯
Owner HARBIN INST OF TECH AT WEIHAI