Copper-Manganese Catalyst Composite for Harmful Gas Removal
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Solution Overview
Problem
Existing catalysts for removing carbon monoxide, nitrogen oxide, ozone, and volatile organic compounds at room temperature are either expensive or have reduced efficiency due to noble metal limitations and sensitivity to water, with high-tech requirements for nano-sized particle dispersion.
Innovation Solution
A composite composition comprising a copper-manganese catalyst hybridized with an inorganic layer compound, an inorganic filler, activated carbon, and a binder, optimized for high specific surface area and porosity, providing efficient gas removal at room temperature with reduced production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If noble metal catalysts (Au, Pd, Pt) are used for carbon monoxide removal at room temperature, then catalytic efficiency and durability are improved, but cost increases significantly
Solution Approach 1:
The patent changes the chemical composition parameters by replacing noble metals with base metals (Cu, Mn, Co, Ni, Zn) in specific ratios. The catalyst uses CuO-MnO2 as the primary active component with optional additions of CoO, NiO, and ZnO to optimize catalytic activity at room temperature while eliminating dependence on expensive noble metals.
Solution Approach 2:
The patent employs inexpensive base metal oxides (CuO, MnO2, CoO, NiO, ZnO) that can be obtained from common salts like copper sulfate, manganese sulfate, cobalt sulfate, nickel sulfate, and zinc sulfate. These materials are readily available, low-cost alternatives to noble metals, making the catalyst economically viable for widespread application.
2Quantity of substance
If Hopcalite (manganese oxide-copper oxide mixture) is used for carbon monoxide removal, then cost-effectiveness and CO removal efficiency are improved, but efficiency drastically decreases in the presence of water
Solution Approach 1:
The patent creates a composite catalyst system combining CuO-MnO2 with additional metal oxides (CoO, NiO, ZnO) to form a multi-component material. This composite structure synergistically improves water resistance while maintaining CO removal efficiency, overcoming the limitation of conventional Hopcalite that loses activity in humid conditions.
3Reliability
If nano-sized metal particles (5 nm) are used for carbon monoxide oxidation, then catalytic activity at room temperature is improved, but preparation technology complexity and dispersion requirements increase
Solution Approach 1:
The patent employs porous ceramic supports with controlled pore structures to disperse and stabilize the metal oxide catalyst particles. The porous structure provides high surface area for catalytic activity while naturally preventing particle aggregation, eliminating the need for complex nano-particle dispersion techniques and specialized preparation equipment.
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 composite composition effectively removes carbon monoxide, nitrogen oxide, and volatile organic compounds at room temperature, offering high gas removal efficiency and cost-effectiveness compared to conventional noble metal catalysts, with optimized density and porosity for enhanced adsorption.
Implementation Method 1
Hopcalite, which is a mixture of manganese oxide, copper oxide and the like, useful as a catalyst used for removing carbon monoxide at room temperature
Implementation Method 2
a composite composition for harmful gas removal containing a copper-manganese catalyst, which is capable of removing ambient and indoor pollutants
Data Source
AI summary
This invention relates to a composite composition for harmful gas removal containing a copper-manganese catalyst, which is capable of removing ambient and indoor pollutants, such as carbon monoxide and volatile organic compounds, the composite composition including a copper-manganese composite catalyst hybridized with an inorganic layer compound, an inorganic filler, activated carbon, and a binder.