Method for preparation of barium sulfate porous material with different microstructures by taking barium peroxide as barium source

A technology of barium peroxide and porous materials, applied in the direction of calcium/strontium/barium sulfate, etc., can solve the problems of limited barium sulfate, backward production technology, low variety structure and grade, and achieve controllable structure, no three waste discharge, Energy saving effect

Active Publication Date: 2013-07-17
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] It can be seen from the above table that the price difference between my country's import and export of barium sulfate is increasing year by year, reflecting that the variety structure and grade of my country's barium sulfate production are relatively low, and the backwardness of production technology has restricted the production of barium sulfate in my country to a large extent. Business Development and Expansion

Method used

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  • Method for preparation of barium sulfate porous material with different microstructures by taking barium peroxide as barium source
  • Method for preparation of barium sulfate porous material with different microstructures by taking barium peroxide as barium source
  • Method for preparation of barium sulfate porous material with different microstructures by taking barium peroxide as barium source

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Embodiment 1

[0028] After cleaning the 1L glass beaker, add sodium hydroxide aqueous solution to 0.3% hydrogen peroxide aqueous solution in 1000ml mass concentration, adjust the pH value of hydrogen peroxide aqueous solution to 11, add 435g ammonium sulfate to the sulfate radical in the solution under stirring The concentration of the solution is 3.3 mol / L; after the ammonium sulfate is completely dissolved, 100 g of barium peroxide is added, and aged at room temperature for 5 hours; filtered and dried to obtain a barium sulfate porous material with a hexagonal microstructure. The pore diameter of the obtained barium sulfate porous material is about 10 nm to 100 nm.

[0029] The SEM photo and microstructure morphology of the prepared barium sulfate porous material are shown in Figure 1a and Figure 1b .

Embodiment 2

[0031] After cleaning the 1L glass beaker, add sodium polystyrene sulfonate in 5% hydrogen peroxide aqueous solution in 1000ml mass concentration, make the concentration of polystyrene sodium sulfonate in the hydrogen peroxide aqueous solution be 0.2g / L, with Adjust the pH value of the solution with ammonia water to 13.5, add 1.74g of potassium sulfate under stirring until the concentration of sulfate radicals in the solution is 0.01mol / L; put 1g of barium peroxide into the solution after the potassium sulfate is completely dissolved, and age at room temperature for 72 hours; centrifuge and dry , to obtain barium sulfate porous material with spherical microstructure. The pore diameter of the obtained barium sulfate porous material is about 100 nm to 600 nm.

[0032] The SEM photo and microstructure morphology of the prepared barium sulfate porous material are shown in Figure 2a and Figure 2b .

Embodiment 3

[0034] After cleaning the 1L glass beaker, add sodium polyacrylate in 1000ml of aqueous hydrogen peroxide solution with a mass concentration of 0.9%, so that the concentration of sodium polyacrylate in aqueous hydrogen peroxide solution is 1g / L, adjust the solution with aqueous potassium hydroxide solution The pH value of the solution is 12, under stirring, add 14.2g of magnesium sulfate to the concentration of the sulfate group in the solution to be 0.1mol / L; after the magnesium sulfate is completely dissolved, drop into 10g of barium peroxide, leave it at room temperature for aging for 48 hours; suction and dry to obtain Barium sulfate porous material with rod-like microstructure. The pore diameter of the obtained barium sulfate porous material is about 30nm-100nm.

[0035] The SEM photo and microstructure morphology of the prepared barium sulfate porous material are shown in Figure 3a and Figure 3b .

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Abstract

Belonging to the field of inorganic material preparation, the invention particularly relates to a method for preparation of a barium sulfate porous material with different microstructures by taking barium peroxide as a barium source. The method includes: adding an organic additive and an inorganic alkali water solution into a hydrogen peroxide water solution, controlling the concentration of the organic additive in the hydrogen peroxide water solution at 0-20g / l, and keeping the pH value of the hydrogen peroxide water solution at 11-13.5; adding a sulfate under stirring; after the sulfate is completely dissolved, adding barium peroxide; carrying out static ageing at room temperature; and conducting separation and drying, thus obtaining the barium sulfate porous material with different microstructures. In the invention, by adjusting the added organic additive, the microstructure shape of the prepared barium sulfate porous material can be regulated. The method provided in the invention has the characteristics of wide material sources, energy saving, simple operation, no discharge of three wastes, and the prepared barium sulfate porous material has a controllable structure, so that the method has the potential of mass production.

Description

technical field [0001] The invention belongs to the field of preparation of inorganic materials, and in particular relates to a method for preparing barium sulfate porous materials with different microstructures by using barium peroxide as a barium source. Background technique [0002] The main use of barium sulfate is as a material for drilling mud, and secondly, like calcium carbonate, it is used as a filler or additive in coatings, plastics, papermaking, rubber, ink and other industries. Although the price of barium sulfate is higher than that of calcium carbonate, it has many excellent properties that calcium carbonate does not have, and the amount of products that achieve the same effect is usually less than that of calcium carbonate, so its demand for fillers and additives is increasing year by year. At present, my country's consumption structure is as follows: barium sulfate accounts for 59.2% in the paint industry, 10.5% in the plastic industry, 5.3% in the paper ind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F11/46
Inventor 闫丰文张晓慧袁国卿
Owner INST OF CHEM CHINESE ACAD OF SCI
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