1,2,3-Triazolium Ionic Liquids for CO2 Separation
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Solution Overview
Problem
The challenge lies in selecting appropriate tri-substituted 1,2,3-triazolium ionic liquids for various applications, such as gas separations, due to the vast number of possible structural configurations, which limits their widespread use despite their potential advantages like high modularity and regio-specificity.
Innovation Solution
Development of a novel class of 1,2,3-triazolium-based cation species and ionic compounds with improved properties, including increased CO2 solubility and polymerization capability, utilizing a click chemistry platform for systematic investigation of functional properties, and employing specific anions like PF6, BF4, and Tf2N to enhance thermal stability and solubility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If tri-substituted 1,2,3-triazolium ionic liquids are used for gas separation applications, then gas separation efficiency is improved, but the vast number of possible structural configurations makes compound selection difficult and limits widespread use
Solution Approach 1:
The patent segments the triazolium ionic liquid structure into distinct substitutable positions (R1, R2, R3) on the 1,2,3-triazolium core, allowing systematic investigation of each position's effect on gas separation performance. This modular approach breaks down the complexity of selecting from 10^18 possible compounds into manageable structural variations at specific positions.
Solution Approach 2:
The patent systematically varies structural parameters (different R groups at positions 1, 2, and 3 of the triazolium ring) to optimize gas separation performance. By changing substituents like alkyl chains, aryl groups, and heteroaryl groups at specific positions, the patent tunes properties such as CO2 solubility and selectivity without requiring evaluation of all possible compounds.
2Reliability
If more structural variations of triazolium ionic liquids are explored, then functional properties like CO2 solubility and thermal stability are improved, but synthesis and application development time increases
Solution Approach 1:
The patent performs preliminary structure-activity relationship studies by synthesizing and characterizing a focused series of tri-substituted 1,2,3-triazolium ionic liquids with systematically varied R groups. This preliminary work establishes structure-property relationships that guide future compound selection, eliminating the need to screen all possible structures and reducing overall development time.
Solution Approach 2:
The patent develops a universal platform based on the 1,2,3-triazolium core that can be adapted for multiple gas separation applications by simply changing the R substituents. This multi-functional approach allows the same core structure to be optimized for different gas pairs (e.g., CO2/N2, CO2/CH4) without developing entirely new chemical frameworks, accelerating application development.
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 novel 1,2,3-triazolium-based compounds demonstrate enhanced thermal stability and CO2 solubility, enabling effective gas separation and purification, particularly in industrial effluent streams, with improved selectivity and efficiency in separating carbon dioxide from gas streams.
Implementation Method 1
These ionic compounds have improved properties over other classes of ionic compounds, including but not limited to increased CO solubility
Data Source
AI summary
The present invention relates to compositions of matter that are ionic liquids, the compositions comprising substituted 1,2,3-triazolium cations combined with any anion. Compositions of the invention should be useful in the separation of gases and, perhaps, as catalysts for many reactions.