Pyrazole Metal Complex for CO2 Absorption and Reuse

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Solution Overview

Problem

Current carbon dioxide capture techniques are sensitive to oxygen and water, have high volatility, and produce products that are not reusable for synthesizing economically valuable compounds, leading to increased storage costs and environmental concerns.

Innovation Solution

A pyrazole metal complex is developed, comprising specific metal ions and pyrazole structures, which can absorb CO2 and be reused by reacting with carbon dioxide to form pyrazole amide formate, allowing conversion into valuable compounds like calcium oxalate, carbon monoxide, formic acid, and propionate, and can be recovered for repeated use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional carbon dioxide capture techniques are used, then carbon dioxide can be captured, but the techniques are sensitive to oxygen and water, have high volatility, and produce products that cannot be reused

Engineering Contradiction:
Improveinsensitivity to oxygen and waterVSAvoidhigh volatility and unreusable products
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The invention changes the chemical parameters of the capture system by using pyrazole metal complex instead of conventional amine-based solutions. This chemical substitution fundamentally alters the reaction mechanism, enabling the system to operate insensitively to oxygen and water while producing stable, reusable carbonate products with low volatility.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The pyrazole metal complex enables recovery and reuse of the capture medium. After capturing CO2 to form carbonate, the system can be regenerated by heating to release CO2, allowing the pyrazole metal complex to be reused multiple times, thus eliminating the need for continuous production of new capture agents and reducing waste.

Inventive Principle:
Principle #34Discarding and recovering

2Quantity of substance

If conventional carbon dioxide capture techniques are used, then carbon dioxide can be captured, but the products yielded cannot be converted into economically valuable compounds, increasing storage costs

Engineering Contradiction:
Improvecarbon dioxide capture capacityVSAvoidconversion to valuable compounds
Core Design Contradiction:
Quantity of substanceVSEase of manufacture

Solution Approach 1:

The invention converts the previously harmful or waste CO2 product into economically valuable compounds. The carbonate formed from CO2 capture can be processed to produce useful chemicals, transforming the waste stream into a resource that generates economic value while maintaining high CO2 capture capacity.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

3Productivity

If conventional carbon dioxide capture techniques are used, then carbon dioxide can be captured, but the compound cannot be recovered for repeated use, increasing operational costs

Engineering Contradiction:
Improvecarbon dioxide capture efficiencyVSAvoidreusability of capture compound
Core Design Contradiction:
ProductivityVSDuration of action of stationary object

Solution Approach 1:

The pyrazole metal complex system enables recovery of the capture compound after CO2 absorption. Through thermal regeneration, the bound CO2 is released as carbonate, and the pyrazole metal complex is restored to its original state, allowing it to be reused for multiple capture cycles without degradation, thus extending its operational duration significantly.

Inventive Principle:
Principle #34Discarding and recovering

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 pyrazole metal complex efficiently captures CO2, reduces storage costs by reusing the compound, and synthesizes economically valuable products, addressing environmental protection needs while being insensitive to oxygen and water.

Implementation Method 1

reacting the pyrazole metal complex with carbon dioxide for absorbing carbon dioxide, wherein a product obtained by reacting the pyrazole metal complex and carbon dioxide is a pyrazole amide formate

Methodology Applied
Scientific EffectChemical reaction: Chemical Bonding

Data Source

PatentUS12179171B2Pyrazole metal complex for absorbing carbon dioxide, method for preparing pyrazole metal complex, and method for absorption of carbon dioxide
Publication Date: 2024.12.31 NATIONAL TSING HUA UNIVERSITY
  • US12179171B2 patent drawing
  • US12179171B2 patent drawing
  • US12179171B2 patent drawing

AI summary

A pyrazole metal complex for absorption of carbon dioxide, a method for preparing the pyrazole metal complex, and a method for absorbing carbon dioxide are provided; wherein the product produced by reacting pyrazole metal complex and carbon dioxide may be transformed into several economically valuable compounds.