Material for adsorption and capture of co2 and use thereof in the storage of carbon dioxide
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Solution Overview
Problem
Current materials for maintaining cold conditions, such as those using aqueous solutions of inorganic salts or graphite with sucrose, are limited in their ability to absorb carbon dioxide, particularly in the liquid state, and cannot achieve long-term cooling or efficiently store carbon dioxide, a greenhouse gas.
Innovation Solution
A material composed of isostatically compressed anthracite or graphite mixed with a disaccharide binder, treated under supercritical liquid carbon dioxide conditions, which absorbs large volumes of carbon dioxide in a substantially irreversible manner, enabling efficient long-term cooling and carbon dioxide storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional materials (aqueous solutions of inorganic salts or graphite with sucrose) are used for cold accumulation, then cooling capability is provided, but the ability to absorb carbon dioxide is limited and long-term cooling cannot be achieved
Solution Approach 1:
The patent changes the physical-chemical parameters of the material system by using isostatic compression to achieve high density (1.5-2.0 g/cm³) and specific porosity (10-30%), and by treating the material with supercritical carbon dioxide. These parameter changes enable the material to adsorb carbon dioxide in all states (gas, liquid, supercritical) and maintain cold conditions for extended periods, resolving the contradiction between absorption capacity and duration of action
Solution Approach 2:
The patent uses composite materials consisting of carbonious material (graphite, activated carbon, or carbon black) combined with a binder (sucrose, fructose, or disaccharide) in specific proportions (90-99% carbonious material and 1-10% binder by weight). This composite structure provides both the cooling capability through phase change of carbon dioxide and the structural integrity for long-term application, enabling both high absorption capacity and extended cooling duration
2Quantity of substance
If materials are used that can adsorb carbon dioxide in gas form only, then short term cooling effect is obtained, but long term cooling and efficient carbon dioxide storage are not possible
Solution Approach 1:
The patent modifies the material parameters through isostatic compression to achieve high density and controlled porosity, and through treatment with supercritical carbon dioxide. These changes enable the material to adsorb carbon dioxide in liquid and supercritical states in addition to gas form, dramatically increasing storage capacity from surface-only absorption to bulk material adsorption, thus enabling efficient carbon dioxide storage and reducing greenhouse gas emissions
3Productivity
If the material structure is optimized for carbon dioxide adsorption, then cooling efficiency and storage capacity improve, but the material requires specific compression and treatment conditions
Solution Approach 1:
The patent applies preliminary action by performing isostatic compression and supercritical carbon dioxide treatment during the material fabrication process itself, rather than as separate post-processing steps. The mixture of carbonious material and binder is compressed to high density and then treated with supercritical CO2 before final product formation. This integrated approach achieves the desired high cooling efficiency and storage capacity while keeping the manufacturing process relatively simple and reproducible
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The material achieves long-term cold accumulation and carbon dioxide storage, reaching temperatures as low as -70°C and increasing hardness with repeated adsorption cycles, making it suitable for cooling applications and environmental gas management.
Implementation Method 1
a material capable of adsorbing carbon dioxide which is obtainable by isostatic compression of a mixture of a carbonious material selected from fossil carbon and/or graphite and a binder
Implementation Method 2
when treated under suitable conditions with liquid carbon dioxide in supercritical conditions, is capable of accumulating cold for very long periods
Implementation Method 3
A short term cooling effect is obtained by the release of the carbon dioxide from the material upon opening the container in which it is stored
Data Source
AI summary
Disclosed is a material capable of adsorbing carbon dioxide which is obtainable by compressing a mixture of a carbonious material selected from fossil carbons and/or graphite and a solid binder consisting of a disaccharide or glucose in powder form.