Method for preparing porous calcium-based material from eggshell and application of porous calcium-based material in thermochemical energy storage
A technology of porous calcium and base materials, applied in heat exchange materials, chemical instruments and methods, heat storage equipment, etc., can solve problems such as easy agglomeration and sintering, and research has not been reported, and achieve good performance and good cycle stability. Sexual, low-cost effect
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[0025] The following examples further illustrate the content of the present invention, but should not be construed as limiting the present invention. Without departing from the spirit and essence of the present invention, the modifications and substitutions made to the methods, steps or conditions of the present invention all belong to the scope of the present invention. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.
[0026] The present invention first prepares calcium nitrate with egg shell as calcium source, uses eggshell membrane as template, uses citric acid as gelling agent, adopts sol-gel method to prepare the eggshell membrane material coated with calcium nitrate, and then the above-mentioned obtained The material was washed and filtered, and calcined at a high temperature of 650 °C for 2 hours to remove the eggshell membrane template to obtain a porous calcium-based material. In o...
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