CO2 Capture Catalyst Composition for Carbonate Conversion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing carbon dioxide capture and storage (CCS) technologies face challenges such as performance degradation due to impurities, high energy consumption, and device corrosion, particularly in chemical absorption methods using amine-based solutions, necessitating a catalyst that can effectively capture and convert carbon dioxide into useful materials without excessive renewable energy consumption.
Innovation Solution
A method involving the preparation of a catalyst by mixing oxide and metal fine powders with crystallized synthetic zeolite using alkaline solutions, stabilizing the mixture to extract the liquid phase, which includes oxides like SiO2, Al2O3, and metals like Li, Cr, and alkaline solutions like potassium hydroxide, to capture and convert carbon dioxide into sodium carbonate or bicarbonate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If chemical absorption method using amine-based solution is used to capture carbon dioxide, then carbon dioxide capture efficiency is improved, but performance degradation occurs due to impurities and device corrosion
Solution Approach 1:
The patent uses solid oxide catalysts (CaO, MgO, SrO, BaO) that can be easily replaced and regenerated compared to amine-based solutions. These oxides are inexpensive materials that can be disposed of or regenerated without complex procedures, solving the reliability issue of amine degradation while maintaining high CO2 capture efficiency.
Solution Approach 2:
The patent changes the physical state from liquid amine solution to solid oxide catalyst, and changes the operating temperature from low temperature (amine absorption) to high temperature (oxide conversion). This parameter change eliminates the corrosion and degradation issues of amine while maintaining effective CO2 capture through chemical conversion to carbonates.
2Productivity
If high regeneration temperature is used to decompose carbamate compounds, then carbon dioxide release is improved, but excessive renewable energy is consumed
Solution Approach 1:
The patent converts the harmful CO2 that needs to be removed into a beneficial carbonated product (calcium carbonate, magnesium carbonate, etc.). Instead of simply releasing CO2 back into the atmosphere, the solid oxide catalysts convert CO2 into stable carbonate minerals that can be used as materials, eliminating the need for energy-intensive regeneration while maintaining high CO2 removal efficiency.
Solution Approach 2:
The solid oxide catalysts automatically convert CO2 to carbonates through spontaneous chemical reaction at moderate temperatures. The process is self-sustaining and does not require external heating for regeneration like amine systems, as the conversion reaction proceeds naturally and the catalyst can be regenerated by simple calcination at moderate temperatures.
3Productivity
If high regeneration temperature is used to decompose carbamate compounds, then carbon dioxide release is improved, but excessive volatilization loss of alkanolamines occurs
Solution Approach 1:
The patent replaces expensive amine compounds with inexpensive solid oxides (CaO, MgO, SrO, BaO) that do not volatilize at operating temperatures. These oxide materials are thermally stable and can be heated to high temperatures for regeneration without loss of active material, eliminating the volatilization loss problem inherent in amine-based systems.
4Productivity
If amine-based absorbing agent is used to capture carbon dioxide, then carbon dioxide capture is improved, but forming stable carbamate compounds requires high thermal and chemical stability
Solution Approach 1:
The patent changes the chemical mechanism from carbamate formation (amine + CO2) to carbonate formation (oxide + CO2). The oxide-catalyzed pathway proceeds at lower temperatures and produces more thermally stable carbonate products, reducing the regeneration temperature requirement compared to amine-based carbamate decomposition.
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 catalyst efficiently captures and converts carbon dioxide into useful materials like sodium carbonate or bicarbonate, reducing carbon dioxide emissions from fossil fuel combustion while also acting as a desulfurization agent, with improved capture efficiency and reduced energy consumption.
Implementation Method 1
capture and convert carbon dioxide into sodium carbonate or bicarbonate
Implementation Method 2
chemical absorption method using an amine-based aqueous solution
Data Source
AI summary
Proposed is a method for manufacturing a catalyst for capture and conversion of carbon dioxide capable of removing carbon dioxide and converting carbon dioxide into other useful materials at the same time by capturing and converting carbon dioxide in flue gas generated during fossil fuel combustion into a carbon resource and a catalyst for capture and conversion of carbon dioxide manufactured by the method of the same. The catalyst for capture and conversion of carbon dioxide according to the present disclosure can reduce carbon dioxide by capturing carbon dioxide in flue gas generated during fossil fuel combustion. It is possible to convert the captured carbon dioxide into other useful materials by converting the collected carbon dioxide into sodium carbonate or sodium hydrogen carbonate as carbon resources.