CO2 Adsorption-Conversion Catalyst for Low-Cost CO Production
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Solution Overview
Problem
Existing methods for converting CO2 to carbon monoxide (CO) require metal species like Ni, Fe, Co, Cr, Cu, Ru, In, Rh, Pt, Au, and Pd, which increase costs and energy consumption, and there is a lack of efficient methods using alkali metals and alkaline earth metals for CO2 conversion to CO.
Innovation Solution
A method using an adsorption-conversion catalyst with alkali metals or alkaline earth metals supported on a catalyst support, such as alumina, to capture and convert CO2 to CO without the use of metal species like Ni and composite oxides, utilizing a fixed bed or circulating fluidized bed reactors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If metal species (Ni, Fe, Co, Cr, Cu, Ru, In, Rh, Pt, Au, Pd) and composite oxides are used as catalysts for CO2 conversion, then CO production efficiency is improved, but manufacturing cost and energy consumption increase
Solution Approach 1:
The patent replaces expensive precious metal catalysts (Ni, Fe, Co, Cr, Cu, Ru, In, Rh, Pt, Au, Pd) and composite oxides with inexpensive alkali metals (Li, Na, K, Rb, Cs) and alkaline earth metals (Be, Mg, Ca, Sr, Ba) supported on alumina. This substitution dramatically reduces manufacturing cost while maintaining CO production efficiency through the reverse water-gas shift reaction.
Solution Approach 2:
The patent optimizes reaction parameters including temperature (400-600°C), pressure (0.1-10 MPa), and gas flow rates to achieve high CO production efficiency using the inexpensive alkali/alkaline earth metal catalysts. The conversion rate reaches up to 4 times higher than traditional methods under optimized conditions.
2Productivity
If metal species (Ni, Fe, Co, Cr, Cu, Ru, In, Rh, Pt, Au, Pd) and composite oxides are used as catalysts for CO2 conversion, then CO production efficiency is improved, but energy consumption increases
Solution Approach 1:
The patent replaces energy-intensive precious metal catalysts with inexpensive alkali/alkaline earth metal-supported alumina catalysts. The new catalyst system achieves comparable or superior CO production efficiency with lower energy consumption due to optimized reaction conditions and higher catalyst activity.
Solution Approach 2:
The patent optimizes reaction temperature (400-600°C) and pressure (0.1-10 MPa) parameters to minimize energy consumption while maximizing CO production efficiency. The optimized parameters enable the inexpensive catalyst to achieve conversion rates up to 4 times higher than traditional methods.
3Manufacturing precision
If traditional catalysts are used for CO2 conversion, then CO selectivity is achieved, but CO2 conversion rate is limited
Solution Approach 1:
The patent achieves breakthrough performance with CO selectivity exceeding 97% and CO2 conversion rates up to 4 times higher than traditional methods by optimizing reaction parameters (temperature 400-600°C, pressure 0.1-10 MPa) and using alkali/alkaline earth metal-supported alumina catalysts.
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
High-efficiency production of CO is achieved by using alkali metals and alkaline earth metals, reducing costs and energy consumption, with CO2 conversion rates up to 4 times higher than traditional methods and CO selectivity exceeding 97% at temperatures around 450°C.
Implementation Method 1
an adsorption-conversion catalyst with alkali metals or alkaline earth metals supported on a catalyst support, such as alumina, to capture and convert CO2 to CO
Implementation Method 2
an adsorption-conversion catalyst with alkali metals or alkaline earth metals supported on a catalyst support, such as alumina, to capture and convert CO2 to CO
Implementation Method 3
converting CO2 as a substance responsible for global warming, into fuels or chemical products
Data Source
AI summary
A method for producing carbon monoxide, the method may comprise the steps of: (a) preparing an adsorption-conversion catalyst comprising a support, and an additive comprising at least one selected from the group consisting of an alkali metal and an alkaline earth metal, supported on the support, and not substantially comprising Ni, Fe, Co, Cr, Cu, Ru, In, Rh, Pt, Au, and Pd elements; (b) bringing the adsorption-conversion catalyst into contact with a gas containing carbon dioxide to allow the adsorption-conversion catalyst to capture carbon dioxide; and (c) bringing the adsorption-conversion catalyst to which carbon dioxide is captured into contact with a reducing gas to produce carbon monoxide.