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Preparation method for diatomite loaded birnessite type manganese dioxide

A technology of birnessite and manganese dioxide, applied in chemical instruments and methods, separation methods, and other chemical processes, can solve problems such as secondary pollution, inability to decompose formaldehyde, and long-term doubts

Inactive Publication Date: 2018-08-28
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned diatomite products can only absorb formaldehyde, but cannot decompose formaldehyde. Its long-term effectiveness is questionable, that is, after its adsorption reaches saturation, the adsorbed toxic and harmful gases will be released, causing secondary pollution.

Method used

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  • Preparation method for diatomite loaded birnessite type manganese dioxide
  • Preparation method for diatomite loaded birnessite type manganese dioxide
  • Preparation method for diatomite loaded birnessite type manganese dioxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0013] Potassium permanganate is prepared into an aqueous solution with a concentration of 0.1-10.0%, and the admixture is prepared into an aqueous solution with a concentration of 0.1-10.0%. After stirring the aqueous solution of potassium permanganate and the admixture evenly, the powdered diatom Soil is soaked in the mixed aqueous solution of potassium permanganate and additive, and dried at 60-150 DEG C to prepare birnessite-type manganese dioxide loaded diatomite. Under the condition that the relative air humidity is 50%, its formula and effect are as shown in Table 1:

[0014] Table 1 Preparation and effect of diatomite loaded birnessite-type manganese dioxide

[0015]

Embodiment 7-12

[0017] Manganese sulfate is formulated into an aqueous solution with a concentration of 0.1-10.0%, and the admixture is prepared into an aqueous solution with a concentration of 0.1-10.0%. After stirring the aqueous solution of birnessite-type manganese dioxide evenly, the diatomite breathing brick is immersed in the mixed aqueous solution of manganese sulfate and admixture, and dried at 60-150°C to prepare diatomite loaded with birnessite-type manganese dioxide. . Under the condition that the relative air humidity is 50%, its formula and effect are as shown in Table 2:

[0018] Table 2 Preparation and effect of diatomite loaded birnessite-type manganese dioxide

[0019]

Embodiment 13-18

[0021] Manganese sulfate is prepared into an aqueous solution with a concentration of 0.1-10.0%, and the admixture is prepared into an aqueous solution with a concentration of 0.1-10.0%. After the aqueous solution of manganese sulfate and the admixture are stirred evenly, the diatomite breathing brick is soaked in sulfuric acid In the mixed aqueous solution of manganese and admixture (the admixture contains 0.1-0.5% potassium permanganate), after drying at 60-150°C and annealing at 100-300°C, the loaded birnessite-type manganese dioxide is prepared diatomaceous earth. Under the condition that the relative air humidity is 50%, its formula and effect are as shown in Table 3:

[0022] Table 3 The formula and effect of preparing diatomite loaded with birnessite-type manganese dioxide

[0023]

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PUM

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Abstract

The invention discloses a preparation method for diatomite loaded birnessite type manganese dioxide, and relates to a preparation method for manganese dioxide. The preparation method is characterizedin that a manganese salt and an additive are prepared into a uniform aqueous solution; diatomite and a product thereof are soaked into an aqueous solution of the manganese salt and the additive, and drying and / or forming treatment is performed; the diatomite loaded birnessite type manganese dioxide is prepared from 5-20 parts of a manganese salt solution, 1-10 parts of an additive aqueous solutionand 100 parts of diatomite and a product thereof, wherein manganese salt is prepared from potassium permanganate, manganese chloride and manganese sulfate, and concentration of the manganese salt is0.1-10.0%; concentration of the additive aqueous solution is 0.1-10.0%; and the diatomite and the product thereof are prepared from diatomite powder and a diatomite breathing brick; the loaded birnessite type manganese dioxide diatomite is prepared. Birnessite type manganese dioxide is loaded onto the diatomite and the product thereof, and moisture absorption of diatomite and formaldehyde adsorption are organically combined with formaldehyde decomposition and regeneration of birnessite type manganese dioxide, so that indoor air is efficiently purified.

Description

technical field [0001] The invention relates to a method for preparing manganese dioxide, in particular to a method for preparing birnessite-type manganese dioxide loaded with diatomite. Background technique [0002] The main form of diatomaceous earth is amorphous silica, with countless nano-scale micropores distributed on the surface, which has excellent properties such as light weight, porous, high strength, wear resistance, heat insulation, sound absorption, non-toxic and tasteless, and good chemical stability. Diatomaceous earth is an excellent interior decoration material, and its main products include diatom mud coatings, diatomite breathing bricks and non-woven fabrics. [0003] The diatom mud coating made of diatomite has the functions of absorbing formaldehyde, smoke and other harmful substances, purifying the air and regulating humidity, and has been widely used in interior decoration; diatomite breathing brick has the functions of purifying air, regulating temper...

Claims

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Application Information

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IPC IPC(8): B01J20/14B01J20/30B01D53/02B01D53/72
CPCB01D53/02B01D53/72B01D2257/7022B01J20/14
Inventor 曹大力
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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