Polyelectrolyte Multilayer Catalyst for Hydrogen Peroxide Production
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Solution Overview
Problem
The production of hydrogen peroxide from oxygen and hydrogen is hindered by safety concerns due to the explosive nature of their mixture and instability of hydrogen peroxide, requiring complex processes and additives that lead to high energy consumption and costs, as well as challenges in catalyst durability and selectivity.
Innovation Solution
A catalyst comprising a polymer electrolyte multilayer film with palladium metal particles on a carrier, formed using a cationic and anionic polymer electrolyte film with specific functional groups, which allows for controlled reaction conditions and minimal use of halogen ions, enhancing stability and activity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If oxygen and hydrogen are mixed for direct hydrogen peroxide production, then hydrogen peroxide can be produced directly without complex steps, but the mixture has high explosive risk
Solution Approach 1:
The catalyst is structured as a multilayer film with distinct functional layers: a first polymer electrolyte layer containing palladium particles for hydrogen activation, and a second polymer electrolyte layer for peroxide stabilization. This segmentation separates the hydrogen activation function from the peroxide production and stabilization functions, allowing controlled reaction while managing safety risks.
Solution Approach 2:
The polymer electrolyte multilayer film acts as an intermediary medium between hydrogen and oxygen. The film contains functional groups that facilitate controlled reaction while preventing direct explosive mixing. The electrolyte layers mediate the reaction by providing controlled ion transport and stabilizing intermediate species.
2Reliability
If hydrogen peroxide is produced using conventional anthraquinone process, then stable production is achieved, but energy consumption and production costs are high
Solution Approach 1:
The invention extracts and eliminates the anthraquinone carrier and associated regeneration steps from the process. By using a polymer electrolyte multilayer film directly on a support, the system removes the need for anthraquinone solution regeneration and separation procedures, thereby reducing energy consumption while maintaining production stability.
Solution Approach 2:
The invention changes the fundamental reaction parameters by using a solid polymer electrolyte catalyst system instead of liquid anthraquinone solution. This parameter change enables direct hydrogen peroxide formation without the need for solution regeneration cycles, reducing energy consumption while maintaining reliable production.
3Ease of manufacture
If hydrogen peroxide is produced directly from oxygen and hydrogen, then production costs can be reduced, but hydrogen peroxide easily decomposes and selectivity is low
Solution Approach 1:
The catalyst is a composite material consisting of polymer electrolyte multilayer film containing palladium particles. The composite structure combines the catalytic activity of palladium with the stabilizing functional groups of the polymer electrolyte, achieving both cost-effective direct production and high peroxide stability through material composition rather than additives.
4Reliability
If strong acids and halide additives are used to improve hydrogen peroxide selectivity, then selectivity increases, but catalyst durability decreases due to metal elution
Solution Approach 1:
The invention replaces expensive and unstable additive systems (strong acids and halide additives) with a robust polymer electrolyte catalyst system that is inherently stable. The polymer electrolyte with functional groups provides the necessary selectivity control without causing metal elution, effectively replacing consumable additives with a durable catalyst structure.
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 high-yield hydrogen peroxide production with improved selectivity and catalyst durability, reducing the need for corrosive additives and simplifying the separation process, thus lowering production costs and energy consumption.
Implementation Method 1
a catalyst comprising a polymer electrolyte multilayer film containing metal particles on a carrier
Implementation Method 2
a polymer electrolyte multilayer film formed on the carrier, which includes a cationic polymer electrolyte and an anionic polymer electrolyte
Data Source
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AI summary
Disclosed herein is a catalyst, including: a carrier, a polymer electrolyte multilayer film formed on the carrier; and metal particles dispersed in the polymer electrolyte multilayer film. The catalyst is advantageous in that it can be easily prepared, and in that it can be used to produce hydrogen peroxide in high yield in the presence of a reaction solvent including no acid promotor.