Ceramic Catalytic Filter with Binder-Free Nanostructure Coating
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Solution Overview
Problem
Existing VOC removal methods using thermal catalysts and photocatalysts on ceramic filters face challenges such as the need for binder use, which can release harmful substances and limit uniformity and efficiency, and the complexity of process integration with plasma systems.
Innovation Solution
A ceramic catalytic filter with a catalyst coating layer directly grown through a one-pot reaction, eliminating the need for binders and enabling a uniform nanostructure application, enhancing synergy with plasma systems by increasing micro-discharge generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If binder is used to attach catalyst on ceramic filter, then catalyst attachment is achieved, but harmful substances are released and uniformity is limited
Solution Approach 1:
The invention extracts and eliminates the binder component from the catalyst attachment system. By using a sol-gel method where the catalyst is directly coated and bonded to the ceramic filter surface without requiring additional binder materials, the harmful substance release problem is solved while maintaining effective catalyst attachment.
Solution Approach 2:
The invention introduces a sol-gel coating as an intermediary layer between the catalyst and ceramic filter. This coating layer serves as a bonding medium that attaches the catalyst to the filter surface through chemical bonding rather than mechanical adhesion, eliminating the need for harmful organic binders while ensuring uniform distribution.
2Ease of manufacture
If dip coating method is used to apply catalyst, then catalyst application is simple, but uniformity and efficiency are limited
Solution Approach 1:
The invention changes the physical and chemical parameters of the coating process by using a sol-gel method with controlled hydrolysis and condensation reactions. By adjusting parameters such as solution composition, pH, temperature, and drying conditions, the coating achieves uniform thickness and homogeneous catalyst distribution while maintaining process simplicity.
Solution Approach 2:
The invention replaces the mechanical dip coating process with a chemical deposition process. Instead of relying on mechanical immersion and drying that causes uneven coating, the sol-gel method uses chemical reactions to form a uniform coating layer, substituting mechanical action with controlled chemical transformation.
3Productivity
If thermal catalysts or photocatalysts are used for VOC removal, then VOC decomposition is achieved, but process integration with plasma systems becomes complex
Solution Approach 1:
The invention merges the thermal catalytic function with plasma generation capability into a single integrated component. The catalyst coating layer is designed to work synergistically with plasma, where plasma provides activation energy and the catalyst facilitates the decomposition reaction, combining two separate processes into one unified system that reduces overall complexity.
Solution Approach 2:
The ceramic filter with catalyst coating is designed to serve multiple functions simultaneously: filtration, catalytic decomposition, and plasma generation support. This multi-functional design eliminates the need for separate plasma generation equipment and simplifies the overall process integration while maintaining effective VOC removal.
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 ceramic catalytic filter achieves improved VOC decomposition efficiency and reduced harmful emissions, with enhanced plasma-catalyst synergy, leading to a more effective air purification system.
Implementation Method 1
the catalyst coating layer may include a nanostructure... improved VOC decomposition efficiency... VOCs are precursor materials of fine dust, and VOC reduction is desired
Implementation Method 2
plasma-catalyst composite system... enhanced plasma-catalyst synergy... increasing micro-discharge generation
Implementation Method 3
catalyst coating layer directly grown on the ceramic support through a one-pot reaction... enhanced synergy with plasma systems
Data Source
AI summary
A ceramic catalytic filter includes a ceramic support, and a catalyst coating layer directly disposed on the ceramic support through a one-pot reaction. The catalyst coating layer includes a nanostructure.