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Large-size sea urchin spherical magnesium carbonate trihydrate and porous magnesium oxide assembled by nanorod arrays and preparation method thereof

A technology of magnesium carbonate trihydrate and porous magnesium oxide, applied in magnesium oxide, magnesium carbonate and other directions, to achieve the effects of easy recovery and reprocessing, many surface active sites, and great application potential

Active Publication Date: 2021-07-09
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, using the specific structural properties and biological activities of marine polysaccharides to regulate the preparation of magnesium carbonate trihydrate and porous magnesium oxide with complex hierarchical structures, there are no related reports

Method used

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  • Large-size sea urchin spherical magnesium carbonate trihydrate and porous magnesium oxide assembled by nanorod arrays and preparation method thereof
  • Large-size sea urchin spherical magnesium carbonate trihydrate and porous magnesium oxide assembled by nanorod arrays and preparation method thereof
  • Large-size sea urchin spherical magnesium carbonate trihydrate and porous magnesium oxide assembled by nanorod arrays and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The large-size sea urchin spherical magnesium carbonate trihydrate and porous magnesium oxide assembled by nanorod arrays described in Example 1, the large-size sea urchin spherical magnesium carbonate trihydrate and porous magnesium oxide are assembled from nanorod arrays, and the large size The diameters of sea urchin spherical magnesium carbonate trihydrate and porous magnesium oxide are both 60-100 μm, and the diameter of nanorods is 70-140 nm. Porous magnesium oxide is obtained by pyrolysis and calcination of the above-mentioned large-sized sea urchin spherical magnesium carbonate trihydrate. Porous magnesium oxide It has a multi-level pore structure, that is, it contains a large number of micropores, mesopores and macropores at the same time, and the specific surface area is 157.1m 2 / g.

[0049] The preparation method of the large-size sea urchin spherical magnesium carbonate trihydrate and porous magnesium oxide assembled by nanorod arrays described in Example 1...

Embodiment 2

[0055] The large-size sea urchin spherical magnesium carbonate trihydrate and porous magnesium oxide assembled by nanorod arrays described in Example 2, the large-size sea urchin spherical magnesium carbonate trihydrate and porous magnesium oxide are assembled from nanorod arrays, and the large size The diameters of sea urchin spherical magnesium carbonate trihydrate and porous magnesium oxide are both 80-120 μm, and the diameter of nanorods is 90-180 nm. Porous magnesium oxide is obtained by pyrolysis and calcination of the above-mentioned large-sized sea urchin spherical magnesium carbonate trihydrate. Porous magnesium oxide It has a multi-level pore structure, that is, it contains a large number of micropores, mesopores and macropores at the same time, and the specific surface area is 163.2m 2 / g.

[0056] The preparation method of the large-size sea urchin spherical magnesium carbonate trihydrate and porous magnesium oxide assembled by nanorod arrays described in Example 2...

Embodiment 3

[0062] The large-size sea urchin spherical magnesium carbonate trihydrate and porous magnesium oxide assembled by nanorod arrays described in Example 3, the large-size sea urchin spherical magnesium carbonate trihydrate and porous magnesium oxide are assembled from nanorod arrays, and the large size The diameters of sea urchin spherical magnesium carbonate trihydrate and porous magnesium oxide are both 100-140 μm, and the diameter of nanorods is 80-130 nm. Porous magnesium oxide is obtained by pyrolysis and calcination of the above-mentioned large-sized sea urchin spherical magnesium carbonate trihydrate. It has a multi-level pore structure, that is, it contains a large number of micropores, mesopores and macropores at the same time, and the specific surface area is 123.3m 2 / g.

[0063] The preparation method of the large-size sea urchin spherical magnesium carbonate trihydrate and porous magnesium oxide assembled by nanorod arrays described in Example 3 consists of the follo...

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Abstract

The invention belongs to the technical field of mineral processing, and particularly relates to large-size sea urchin spherical magnesium carbonate trihydrate and porous magnesium oxide assembled by nanorod arrays and a preparation method of the large-size sea urchin spherical magnesium carbonate trihydrate and porous magnesium oxide. The large-size sea urchin spherical magnesium carbonate trihydrate and the porous magnesium oxide are formed by assembling nanorod arrays, the diameters of the large-size sea urchin spherical magnesium carbonate trihydrate and the porous magnesium oxide are 60-150 microns, and the diameter of each nanorod is 50-200 nm; the porous magnesium oxide is prepared by pyrolyzing and calcining the large-size sea urchin spherical magnesium carbonate trihydrate and is of a hierarchical pore structure, that is, the material contains micropores, mesopores and macropores at the same time, and the specific surface area is 110-170m2 / g. The reaction conditions are mild and easy to regulate and control, the magnesium carbonate trihydrate and the porous magnesium oxide crystal have a three-dimensional complex multilevel structure, the particle size is large, the morphology order degree is high, and the porous magnesium oxide has a large number of micropores, mesopores and macropores at the same time.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a large-sized sea urchin spherical magnesium carbonate trihydrate and porous magnesium oxide assembled with a nanorod array and a preparation method thereof. Background technique [0002] Magnesium carbonate trihydrate, as a typical functionalized magnesium carbonate product, is a crystal synthesized by hydrothermal reaction method using soluble magnesium salt as raw material. At present, most of the synthesized magnesium carbonate trihydrate has a rod-like whisker shape and a particle size of micron. . Its whiskers are well-developed, with few defects and high strength. It can be used as a filler for composite materials, and used for reinforcement and modification of plastics, rubber, coatings, etc., with excellent performance. In addition, due to the high purity of magnesium carbonate trihydrate crystals, it has great application value in medicine, cosme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F5/24C01F5/06
CPCC01F5/24C01F5/06C01P2002/72C01P2004/03C01P2006/17C01P2006/12C01P2004/61C01P2004/16
Inventor 陆帅帅闫平科张彩娥王儒高玉娟崔万顺白阳
Owner SHANDONG UNIV OF TECH
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