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a ceco 3 oh nanosphere wrapped mnco 3 Preparation method and application of microsphere composite material

A composite material and nanosphere technology, which is applied in the field of preparation of CeCO3OH nanosphere-wrapped MnCO3 microsphere composite material, can solve the problem of uncontrollable manganese oxide, etc., and achieve the effect of sufficient unique characteristics, uniform distribution of Ce, and difficulty in agglomeration

Active Publication Date: 2022-06-07
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is simple in process and low in cost, but cannot control the manganese oxide obtained

Method used

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  • a ceco <sub>3</sub> oh nanosphere wrapped mnco <sub>3</sub> Preparation method and application of microsphere composite material
  • a ceco <sub>3</sub> oh nanosphere wrapped mnco <sub>3</sub> Preparation method and application of microsphere composite material
  • a ceco <sub>3</sub> oh nanosphere wrapped mnco <sub>3</sub> Preparation method and application of microsphere composite material

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Experimental program
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Effect test

Embodiment 1

[0036] CeCO 3 OH nanospheres wrap MnCO 3 The preparation process of microspheres, the specific steps are as follows:

[0037] 1) The Ce (NO 3 ) 3 ·6H 2 O is dissolved in distilled water and stirred until a transparent solution is formed to obtain product A;

[0038] 2) The MnC 4 H 6 O 4 ·4H 2 O is dissolved in distilled water and stirred until a transparent solution is formed to obtain product B;

[0039] 3) dissolving ammonium bicarbonate in distilled water, and adding absolute ethanol (the mol ratio of ammonium bicarbonate and absolute ethanol is 1:6), stirring to form a transparent solution to obtain C product;

[0040] 4) Mix product A and product B with product C (the molar ratio of cerium salt in product A to ammonium bicarbonate in product C is 0.5:1, and the molar ratio of manganese salt and ammonium bicarbonate in product B is 0.5:1), Stir until a white milky slurry is formed to obtain product D;

[0041] 5) Put D product into the autoclave to seal, process...

Embodiment 2

[0045] CeCO 3 OH nanospheres wrap MnCO 3 The preparation technology of the preparation technology of micro-ball, the concrete steps are as follows:

[0046] 1) The Ce (NO 3 ) 3 ·6H 2 O is dissolved in distilled water and stirred until a transparent solution is formed to obtain product A;

[0047] 2) The MnC 4 H 6 O 4 ·4H 2 O is dissolved in distilled water and stirred until a transparent solution is formed to obtain product B;

[0048] 3) dissolving ammonium bicarbonate in distilled water, and adding absolute ethanol (the mol ratio of ammonium bicarbonate and absolute ethanol is 1:5), stirring to form a transparent solution, to obtain C product;

[0049] 4) Mix product A and product B with product C (the molar ratio of cerium salt in product A to ammonium bicarbonate in product C is 0.4:1, and the molar ratio of manganese salt and ammonium bicarbonate in product B is 0.6:1), stir To form a white milky slurry, obtain D product;

[0050] 5) Put D product into the auto...

Embodiment 3

[0054] CeCO 3 OH nanospheres wrap MnCO 3 The preparation process of microspheres, the specific steps are as follows:

[0055] 1) The Ce (NO 3 ) 3 ·6H 2 O is dissolved in distilled water and stirred until a transparent solution is formed to obtain product A;

[0056] 2) The MnC 4 H 6 O 4 ·4H 2 O is dissolved in distilled water and stirred until a transparent solution is formed to obtain product B;

[0057] 3) dissolving ammonium bicarbonate in distilled water, and adding absolute ethanol (the mol ratio of ammonium bicarbonate and absolute ethanol is 1:3), stirring to form a transparent solution, to obtain C product;

[0058] 4) Mix product A and product B with product C (the molar ratio of cerium salt in product A to ammonium bicarbonate in product C is 0.2:1, and the molar ratio of manganese salt and ammonium bicarbonate in product B is 0.6:1), Stir until a white milky slurry is formed to obtain product D;

[0059] 5) Put D product into the autoclave to seal, proces...

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Abstract

The invention discloses a CeCO 3 OH nanospheres wrapped MnCO 3 The preparation method of microsphere composite material is to use cerium salt and manganese salt as precursors to synthesize CeCO in one step by hydrothermal method 3 OH nanospheres wrapped MnCO 3 Composites of micron hollow spheres. The composite material of the present invention is CeCO 3 OH nanospheres wrapped MnCO 3 The structure of micron hollow spheres is not easy to agglomerate during the preparation process, the Mn-Ce interface is large, and there are many active sites, and it can be used directly as a functional material, and can also be controlled by thermal decomposition to form Mn-Ce oxides at different prices, satisfying Application requirements in different fields.

Description

technical field [0001] The invention relates to a preparation method and application of a Ce-Mn composite material, in particular to a CeCO 3 OH Nanospheres Encapsulated MnCO 3 Preparation method and application of microsphere composite material. Background technique [0002] At present, researchers are working on the study of composite materials. Mn-Ce composite materials are the hotspot of current research. Mn-Ce composite materials inherit the advantages of Mn element and Ce element. Mn element is a transition with multiple valence states. Metals are often used as active components in denitration catalysts to provide active sites and oxygen vacancies, and Mn-based SCR catalysts have high low-temperature activity and are very promising low-temperature SCR catalysts, but there are also certain problems, such as High temperature is easy to agglomerate, and the water resistance effect is poor. Therefore, changing the defects of Mn-based catalysts has also become a research ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/34B01J37/10B01J37/08C01G45/02B01D53/86B01D53/56
CPCB01J23/34B01J23/002B01J37/10B01J37/088C01G45/02B01D53/8628Y02E60/10
Inventor 兰苑培刘丰源李军旗陈朝轶夏雪雯毛锡嵩储智尧宁德阳邹飞张俊山黄春荣
Owner GUIZHOU UNIV