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Multi-layer macropore-mesopore-micropore polymer-derived ceramic adsorption material and preparation method thereof

A microporous polymer and adsorption material technology, applied in the field of porous ceramic materials, can solve the problems of single pore size distribution, narrow pore size distribution, and low specific surface area of ​​porous PCDs, and achieve the effects of low cost, improved adsorption performance, and simple process.

Active Publication Date: 2018-06-19
JIANGSU UNIV
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Problems solved by technology

The porous PCDs synthesized by the above methods all show the disadvantages of single distribution of pore size, narrow pore size distribution and low specific surface area, which limit their application in the field of sewage treatment.

Method used

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  • Multi-layer macropore-mesopore-micropore polymer-derived ceramic adsorption material and preparation method thereof
  • Multi-layer macropore-mesopore-micropore polymer-derived ceramic adsorption material and preparation method thereof
  • Multi-layer macropore-mesopore-micropore polymer-derived ceramic adsorption material and preparation method thereof

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0028] A method for preparing a multi-level macroporous-mesoporous-microporous polymer-derived ceramic adsorption material, comprising the following steps:

[0029] S01: Prepare solid polysiloxane; specifically: mix hydrogen-containing silicone oil, divinylbenzene, and chloroplatinic acid in a mass ratio of 6:3:1, and mix them uniformly by ultrasonic oscillation, then cross-link and solidify at 120°C to synthesize a solid Polysiloxane; wherein hydrogen-containing silicone oil is used as a polymer precursor, divinylbenzene is used as a crosslinking agent, and chloroplatinic acid solution is used as a catalyst; the concentration of the chloroplatinic acid solution is 11.3ppm; the crosslinking curing time is 12h.

[0030] S02: Sawdust and rice husks were crushed and screened...

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Abstract

The invention provides a preparation method of a multi-layer macropore-mesopore-micropore polymer-derived ceramic adsorption material. The preparation method comprises the following steps: preparing solid polysiloxane; grinding and screening wood chips and rice husks, performing ball milling, and taking out and drying powder; performing ball milling on solid polysiloxane, wood powder and rice huskpowder uniformly after mixing; placing a uniform mixture in a tubular furnace, sintering the mixture at high temperature under the protection of inert gas, and performing heat preservation and cooling with the furnace; performing acid etching on the obtained porous SiOC ceramic powder with a hydrofluoric acid solution, washing a product with water to be neutral and then performing drying to obtain the macropore-mesopore-micropore polymer-derived ceramic adsorption material. Multi-layer porous polymer-derived ceramic with high specific surface area can be synthesized by in-situ reaction and has abundant micropores and mesopores, and larger storage space and evacuation channels can be formed; rapid transport rate of reactants and products in the sewage treatment process is increased as a result of enough large pores, and larger adsorption space and transport channels can be formed.

Description

technical field [0001] The invention relates to the technical field of porous ceramic materials, in particular to a multi-level macroporous-mesoporous-microporous polymer derived ceramic adsorption material and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of the dye industry, dye wastewater has the characteristics of complex components, high concentration of organic matter, difficult decolorization, many refractory substances, and strong toxicity, which seriously pollutes the water environment and endangers human health. Porous ceramics are widely used in the field of sewage purification because of their light weight, high temperature resistance, thermal shock resistance, high strength, high chemical stability and high specific surface area, which are of great significance to solve the shortage of water resources and build a harmonious environment. The traditional porous ceramics have the disadvantages of low adsorpt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30
CPCB01J20/0251B01J20/10B01J20/20B01J20/28054B01J20/28061B01J20/28064B01J20/28095
Inventor 潘建梅尚逢缘谭如嫣王桂华沈伟孙昊宇严学华程晓农
Owner JIANGSU UNIV
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