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A kind of preparation method of honeycomb porous calcium carbonate

A porous calcium carbonate and honeycomb technology, applied in the direction of calcium carbonate/strontium/barium, etc., can solve the problems of difficult industrial application, complex reaction process, high energy consumption, etc., and achieve simple reaction process, uniform distribution and low cost cheap effect

Inactive Publication Date: 2018-09-07
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the preparation methods of honeycomb porous calcium carbonate mainly include: hydrothermal synthesis method, template synthesis method and organic matrix assisted synthesis method, etc. However, these synthesis methods generally have the disadvantages of high energy consumption, high cost and complicated reaction process, etc. more difficult

Method used

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  • A kind of preparation method of honeycomb porous calcium carbonate
  • A kind of preparation method of honeycomb porous calcium carbonate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Weigh 20g of sodium carbonate with a particle size of 5μm in a 100mL beaker and add 50mL of absolute ethanol to stir evenly to obtain a paste solution, then prepare a saturated calcium chloride solution in another 200mL beaker, and add the paste solution to the Buchner funnel Medium suction filtration, after the filter cake is drained, slowly pour the saturated calcium chloride solution into the Buchner funnel, continue the suction filtration, add saturated calcium chloride solution during the suction filtration process to ensure that the filter cake is completely immersed in the solution, until the cloth No need to add saturated calcium chloride solution when the clear liquid dripped out from the bottom of the funnel, then rinse the filter cake with deionized water and dry to obtain honeycomb porous calcium carbonate with an average particle size of 5 μm.

Embodiment 2

[0016] Weigh 20g of sodium carbonate with a particle size of 10μm in a 100mL beaker and add 50mL of absolute ethanol to stir evenly to obtain a paste solution, then prepare a saturated calcium chloride solution in another 200mL beaker, and add the paste solution to the Buchner funnel Medium suction filtration, after the filter cake is drained, slowly pour the saturated calcium chloride solution into the Buchner funnel, continue the suction filtration, add saturated calcium chloride solution during the suction filtration process to ensure that the filter cake is completely immersed in the solution, until the cloth No need to add saturated calcium chloride solution when the clear liquid dripped out from the bottom of the funnel, then rinse the filter cake with deionized water and dry to obtain honeycomb porous calcium carbonate with an average particle size of 10 μm.

Embodiment 3

[0018] Weigh 20g of sodium carbonate with a particle size of 50μm in a 100mL beaker, add 50mL of absolute ethanol and stir evenly to obtain a paste solution, then prepare a saturated calcium nitrate solution in another 200mL beaker, and add the paste solution into the Buchner funnel Suction filtration, after the filter cake is drained, slowly pour the saturated calcium nitrate solution into the Buchner funnel, continue the suction filtration, add saturated calcium nitrate solution during the suction filtration process to ensure that the filter cake is completely immersed in the solution, until it reaches the bottom of the Buchner funnel No saturated calcium nitrate solution was added when the clear liquid was dripped out, and then the filter cake was rinsed with deionized water and dried to obtain honeycomb porous calcium carbonate with an average particle size of 50 μm.

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Abstract

The invention discloses a preparation method of cellular porous calcium carbonate. The method comprises the following steps: dissolving the soluble carbonate particles in absolute ethyl alcohol to prepare a pasty solution, performing suction filtration on the pasty solution by use of a Buchner funnel, adding saturated calcium salt solution in the Buchner funnel after the complete pumping, and then continuously performing suction filtration, refilling the saturated calcium salt solution in the suction filtration process to guarantee that the filter cake is completely immersed into the solution, and not adding the saturated calcium salt solution until the clear liquid percolates from the lower port of the Buchner funnel, flushing the filter cake by use of the deionized water, drying to obtain the cellular porous calcium carbonate. The prepared cellular porous calcium carbonate is even in pore size, uniform in distribution, simple and feasible in reaction process, low in cost and suitable for the large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of calcium carbonate synthesis, and in particular relates to a preparation method of honeycomb porous calcium carbonate. Background technique [0002] Honeycomb porous calcium carbonate material belongs to porous light calcium carbonate. Honeycomb porous calcium carbonate material is a kind of material with special properties. They generally have large specific surface area, good thermal and chemical stability, and are also thermally stable. Harmony insulator. It is precisely because of these characteristics that honeycomb porous calcium carbonate materials have a wide range of applications in many fields, such as the treatment of air pollutants, the separation of macromolecules and macroions, the purification of drugs, the purification of sewage and the filtration of toxins etc., and honeycomb porous calcium carbonate materials also have important applications in the fields of protein packaging, separation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F11/18
CPCC01F11/18C01P2002/72C01P2004/03C01P2004/61
Inventor 王晓兵王魁杨林郭玉明朱琳李伟
Owner HENAN NORMAL UNIV