Ionic Liquid Peroxide Decomposition for Low-Temperature Oxygen Generation
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Solution Overview
Problem
Existing oxygen generation methods, such as chlorate candles and peroxide-based systems, face challenges including high temperature requirements, production of toxic byproducts, system instability, and inefficiency at subfreezing temperatures, which limit their reliability and safety in emergency oxygen supply systems.
Innovation Solution
The use of ionic liquids with metallate anions to decompose solid peroxide compounds at low temperatures, providing a method for continuous oxygen production without toxic byproducts, using a composition that includes a peroxide compound and an ionic liquid as a solvent and heat sink, allowing for extended oxygen generation with a significant flow rate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If chlorate candles are used for oxygen generation, then oxygen can be produced, but high temperatures (450-700°C) are required which necessitate heat insulation and increase weight and size
Solution Approach 1:
The invention changes the temperature parameter from high (450-700°C in chlorate candles) to low (below 150°C, preferably below 100°C) by using peroxide compounds as oxygen source instead of chlorates, eliminating the need for heat insulation and reducing weight
Solution Approach 2:
The invention extracts and removes the heat insulation component entirely by eliminating the high-temperature reaction requirement, taking out the problematic thermal management system that added weight and complexity
2Quantity of substance
If chlorate candles are used for oxygen generation, then oxygen can be produced, but toxic side products (chlorine) are generated which must be removed, adding size and weight
Solution Approach 1:
The invention converts the harmful chlorate decomposition reaction into a beneficial peroxide decomposition reaction that produces only oxygen and water, eliminating toxic chlorine byproducts while maintaining oxygen generation capability
Solution Approach 2:
The invention extracts and eliminates the toxic chlorine byproduct formation by replacing chlorate chemistry with peroxide chemistry, removing the need for toxic gas removal systems
3Quantity of substance
If peroxide-based oxygen generators use water for catalyst contact, then oxygen can be produced, but the system fails below 0°C because water freezes
Solution Approach 1:
The invention changes the solvent parameter from water (freezing point 0°C) to organic solvent (remaining liquid below 0°C), enabling oxygen generation in subfreezing temperatures while maintaining catalyst solubility and reaction functionality
Solution Approach 2:
The invention applies local quality by using different solvent properties in different temperature regimes, selecting organic solvents specifically for their low-temperature liquid state to enable operation in cold environments
4Quantity of substance
If peroxide-based oxygen generators use aqueous solutions, then oxygen can be produced, but vehement effervescing occurs requiring complicated device structure
Solution Approach 1:
The invention changes the reaction medium parameter from aqueous solution to organic solvent, which suppresses effervescing and foaming during oxygen evolution, allowing for simpler device structure without complex foam control mechanisms
5Quantity of substance
If chlorate candles use liquid zone for reaction, then decomposition can proceed, but mechanical shocks or vibrations may separate candle portions, interrupting heat transfer and oxygen production
Solution Approach 1:
The invention changes the physical state parameter of the reaction medium from liquid (unstable, separates under shock) to solid (stable, maintains structural integrity), using solid peroxide compounds that remain intact under mechanical stress while still enabling decomposition reaction
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
This approach enables reliable and continuous oxygen production at low temperatures, below 150°C, without toxic components, and over an extended period, improving the safety and efficiency of emergency oxygen supply systems.
Implementation Method 1
using a composition that includes a peroxide compound and an ionic liquid as a solvent and heat sink
Implementation Method 2
The use of ionic liquids with metallate anions to decompose solid peroxide compounds at low temperatures
Data Source
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AI summary
The present invention relates to a method for generating oxygen, comprising providing at least one oxygen source, providing at least one ionic liquid, the ionic liquid comprising a cation and an anion, wherein the oxygen source is a hydrogen peroxide adduct compound which is at least partially soluble in the ionic liquid, the ionic liquid is in the liquid state at least in a temperature range from -10°C to +50°C, and the anion is selected from metallate anions, and contacting the oxygen source and the ionic liquid.