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Method for synthesizing manganese oxide attapulgite composite material through microwave method

A composite material, manganese oxide technology, applied in chemical instruments and methods, manganese oxide/hydroxide, alkali metal oxide/hydroxide, etc., can solve the problem of poor manganese oxide dispersibility, poor operability, color image Problems such as large contour noise

Active Publication Date: 2018-11-30
HUAIYIN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] (1) Manganese oxide attapulgite composite material is prepared, the dispersibility of manganese oxide is not good, and the adsorption performance of attapulgite is poor, and the degradation ability of manganese oxide to nitrobenzene wastewater is relatively poor;
[0010] (2) The liquid phase reaction is used to realize manganese oxide loading. Most of the manganese oxide precipitates cannot effectively enter the pores of the attapulgite, or simply adhere to the surface of the attapulgite, and are catalyzed by liquid phase adsorption, resulting in a large loss of manganese oxide; at the same time, traditional heating Using an oven or muffle furnace consumes time and energy
[0011] (3) The preparation system of the prior art has poor operability in preparing products, poor intelligent control, and cannot accurately control the process parameters in the preparation
[0012] (4) The traditional color image contour extraction method is susceptible to the interference of initial contour points and slow convergence speed when extracting the target boundary, which leads to the noise of the extracted color image contour, which affects the effect of image segmentation
Causes low quality of manganese oxide attapulgite composites synthesized by microwave method

Method used

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  • Method for synthesizing manganese oxide attapulgite composite material through microwave method
  • Method for synthesizing manganese oxide attapulgite composite material through microwave method
  • Method for synthesizing manganese oxide attapulgite composite material through microwave method

Examples

Experimental program
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Effect test

Embodiment 1

[0168] The steps of the method for synthesizing manganese oxide attapulgite composite materials by microwave method are:

[0169] Step 1: Take 50g of attapulgite raw material after crushing and add it to 500ml of H with a concentration of 1mol / L. 2 SO 4 in solution;

[0170] Step 2: Put the solution in step 1 into a microwave device, filter after 15 minutes at 60°C and 300W, wash with distilled water for several times, wash to neutrality, remove the upper liquid by centrifuge at 12000r / min, and dry at 60°C in a microwave device , ground and sieved, and stored in a desiccator;

[0171] Step 3: Take the attapulgite after acid activation, add 100mL 2mol / L MnSO under stirring condition 4 The solution and 1g of sodium dodecyl sulfate (SDS) were dispersed uniformly by ultrasonic at 400W, 30°C, 10-20min to obtain dispersed attapulgite;

[0172] Step 4: Put the evenly dispersed attapulgite into a microwave device, 60°C, 300W, so that the water is completely evaporated, Mn 2+ Full...

Embodiment 2

[0180] The steps of the method for synthesizing manganese oxide attapulgite composite materials by microwave method are:

[0181] Step 1: Take 50g of attapulgite raw material after crushing and add it to 500ml of H with a concentration of 1mol / L. 2 SO 4 in solution;

[0182] Step 2: Put the solution in step 1 into a microwave device, filter after 15-25 minutes at 80°C and 300W, wash with distilled water for several times, wash until neutral, centrifuge at 12000r / min to remove the upper layer liquid, and put it in a microwave device at 80°C Dry, grind and sieve, and store in a desiccator;

[0183] Step 3: Take the attapulgite after acid activation, add 100mL 2mol / L MnSO under stirring condition 4 The solution and 1g of sodium dodecyl sulfate (SDS) were uniformly dispersed by ultrasonic at 400W, 30°C, 20min to obtain dispersed attapulgite;

[0184] Step 4: Put the evenly dispersed attapulgite into the microwave device, 80 ℃, 300W, make the water evaporate completely, Mn 2+ ...

Embodiment 3

[0192] The steps of the method for synthesizing manganese oxide attapulgite composite materials by microwave method are:

[0193] Step 1: Take 50g of attapulgite raw material after crushing and add it to 500ml of H with a concentration of 1mol / L. 2 SO 4 in solution;

[0194] Step 2: Put the solution in step 1 into a microwave device, filter it for 15-25 minutes at 70°C and 300W, wash with distilled water for several times until neutral, centrifuge at 12000r / min to remove the upper layer liquid, and put it in a microwave device at 70°C Dry, grind and sieve, and store in a desiccator;

[0195] Step 3: Take the attapulgite after acid activation, add 100mL 2mol / L MnSO under stirring condition 4 The solution and 1g of sodium dodecyl sulfate (SDS) were uniformly dispersed by ultrasonic at 400W, 30°C, 15min to obtain dispersed attapulgite;

[0196] Step 4: Put the evenly dispersed attapulgite into the microwave device, 70 ℃, 300W, make the water evaporate completely, Mn 2+ Fully...

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Abstract

The invention belongs to the technical field of material production and discloses a method for synthesizing a manganese oxide attapulgite composite material through a microwave method. The method comprises the following steps: adding treated attapulgite into H2SO4; carrying out microwave treating and filtering; washing with distilled water until a mixture is neutral; centrifuging and removing liquid; carrying out microwave drying, grinding and sieving and preserving; adding an MnSO4 solution and sodium dodecyl sulfate into the acid activated attapulgite; carrying out ultrasonic treatment to obtain dispersed attapulgite; carrying out microwave treatment and completely evaporating moisture; sufficiently dispersing Mn<2+> to inner surfaces of attapulgite pore channels; adding the attapulgiteinto a NaOH solution and carrying out the ultrasonic treatment to enable OH<-> ions and the Mn<2+> dispersed in to attapulgite micro-pores to generate Mn(OH)2; washing with distilled water until liquid is neutral; centrifuging and removing the liquid, so as to remove the free Mn(OH)2 on the surface of the attapulgite; carrying out microwave drying and neutralizing acid and alkali in wastewater. The method disclosed by the invention has the effects of improving the dispersity of manganese oxide and combining the adsorption performance of the attapulgite, and can be used for enhancing a degradation capability of the manganese oxide on difficult-to-treat nitrobenzene type wastewater.

Description

technical field [0001] The invention belongs to the technical field of material production, and in particular relates to a method for synthesizing a manganese oxide attapulgite composite material by a microwave method. Background technique [0002] Microwaves are electromagnetic waves like radio waves, infrared rays, and visible light. The frequency is generally 300MHz-300kMHz, and the wavelength is between 1 meter and 1 millimeter. The DC power supply provides the DC power required by the magnetron of the microwave generator, and the microwave generator generates an alternating electric field. The molecules rotate and collide more than 2.5 billion times / s, and the polar molecules swing with the change of the external electric field and produce thermal effects; because of the thermal motion of the molecule itself and the interaction between adjacent molecules, the molecules swing with the change of the electric field The rules of the molecule are hindered, which produces an...

Claims

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Application Information

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IPC IPC(8): B01J20/12B01J20/28B01J20/30C01G45/02C02F1/28C02F101/38
CPCB01J20/0222B01J20/12B01J20/28061C01G45/02C02F1/281C02F2101/38
Inventor 胡涛周鑫宇朱永谭立强陈静张孝杰钱运华汪玉祥
Owner HUAIYIN INSTITUTE OF TECHNOLOGY
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