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Method for preparing multilevel porous carbon base composite phase change material

A technology of composite phase change materials and carbon materials, which is applied in the field of preparation of multi-level porous carbon-based composite phase change materials, can solve the problems of low utilization rate of heat storage, small specific surface area, poor heat transfer performance, etc., and achieve a wide temperature range , Excellent heat transfer performance, and the effect of improving heat storage performance

Inactive Publication Date: 2015-06-17
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the porous materials used have shortcomings such as small specific surface area, low porosity, and narrow pore size, which lead to poor heat transfer performance and low utilization rate of heat storage in practical applications. In addition, the expensive price (such as graphene) also limits the market. application promotion

Method used

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  • Method for preparing multilevel porous carbon base composite phase change material
  • Method for preparing multilevel porous carbon base composite phase change material
  • Method for preparing multilevel porous carbon base composite phase change material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Preparation of metal-organic framework template materials:

[0028] Dissolve 3.06 g of terephthalic acid and 10.89 g of zinc nitrate nonahydrate in 360 ml of DMF to prepare a homogeneous solution, stir magnetically for 30 mins, add 14.4 g of triethylamine to the solution, and stir at room temperature for 30 min, a solid product was obtained. After the reaction, it was filtered and washed repeatedly, and dried at 120 °C for 24 h to obtain the metal-organic framework template material MOF-5.

[0029] (2) Preparation of multi-level porous carbon materials:

[0030] Put metal-organic framework material MOF-5 powder into a porcelain boat and transfer it to a tube furnace. First pass nitrogen gas for 30 mins, and then raise the temperature to 1000 °C at a rate of 5 °C / min under the protection of an inert gas. o C and kept for 6 h, then naturally cooled to room temperature, washed several times with 1 mol / L hydrochloric acid solution, then washed with deionized water unt...

Embodiment 2

[0034] (1) Preparation of metal-organic framework template materials:

[0035]Dissolve 3.06 g of 2-aminoterephthalic acid and 10.89 g of zinc nitrate nonahydrate in 360 ml of DMF to prepare a homogeneous solution, stir magnetically for 30 mins, and add 2.7 ml of 30 wt% H 2 o 2 and 14.4 g of triethylamine were stirred at room temperature for 30 min to obtain a solid product. After the reaction, it was filtered and washed repeatedly with DMF and methanol, and dried at 120 °C for 24 h to obtain the metal-organic framework template material IRMOF-3.

[0036] (2) Preparation of multi-level porous carbon materials:

[0037] Put the metal-organic framework material IRMOF-3 powder into a porcelain boat and transfer it to a tube furnace. First pass nitrogen gas for 30 mins, and then raise the temperature to 1000 °C at a rate of 5 °C / min under the protection of an inert gas. o C and kept for 6 h, then naturally cooled to room temperature, washed several times with 1 mol / L hydrochlori...

Embodiment 3

[0041] (1) Preparation of metal-organic framework template materials:

[0042] Dissolve 3.0 g of TDBTM and 10.89 g of zinc nitrate nonahydrate in 360 ml of DMF to prepare a homogeneous solution, stir magnetically for 30 mins, add 14.4 g of triethylamine to the solution, and stir at room temperature for 30 min to obtain solid product. After the reaction, the chloroform was filtered and washed several times, and dried at 80 °C for 24 h to obtain the metal-organic framework template material Zn-TPBTM.

[0043] (2) Preparation of multi-level porous carbon materials:

[0044] Put the metal-organic framework material Zn-TPBTM powder into a porcelain boat and transfer it to a tube furnace, first pass nitrogen gas for 30 min, and then raise the temperature to 1000 °C at a rate of 5 °C / min under the protection of an inert gas. o C and kept for 6 h, then naturally cooled to room temperature, washed several times with 1 mol / L hydrochloric acid solution, then washed with deionized wate...

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Abstract

The invention provides a method for preparing a multilevel porous carbon base composite phase change material, and belongs to the field of composite phase change materials. The method comprises the following steps: at first, preparing an organic metal skeleton material by using such methods as a solution method, a solvothermal method or a stirring synthesis method; with the organic metal skeleton material as a template, high temperature carbonizing under the protection of an inert gas, and changing the carbonizing temperature and the post treatment manner to obtain a multilevel porous carbon material with a super-large specific surface area and a super-large pore volume; selecting proper solvents according to different kinds of phase change core materials, preparing the phase change core materials to a solution, dispersing the porous carbon material into the solution, removing the solvent by such manners as heating, and meanwhile the phase change core materials are adsorbed and limited in the porous carbon material. The composite phase change material prepared by the method provided by the invention has good thermal storage property, can effectively avoid the leakage problem of the phase change core material, and has the advantages of excellent heat transfer property, good cycling stability and wide application range, and the process is simple and is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the field of composite phase-change materials, and in particular relates to a preparation method of a multi-level porous carbon-based composite phase-change material. Background technique [0002] With the development of the global economy, energy shortage has gradually become a prominent problem in recent years, which has attracted the attention of various governments. Because traditional energy is non-renewable, the rapid consumption of these energy forces human beings to seek new energy to meet the energy demand of social development. At present, humans have developed and put into use some clean energy sources such as solar energy, wind energy, and ocean energy. However, this kind of energy often has defects such as discontinuity and volatility, which increases the limitations of the use process and cannot meet the requirements of human continuous use around the clock. Phase change energy storage technology achieves the pu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06
CPCC09K5/063Y02P20/141
Inventor 王戈汤甲杨明王静静谭丽高鸿毅范爽安迪
Owner UNIV OF SCI & TECH BEIJING
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