Composite Oxide Chlorine Gas Catalyst for Reduced Component Loss
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Solution Overview
Problem
Conventional methods for removing chlorine gas from exhaust gases are inefficient and prone to catalyst component reduction or delamination during use.
Innovation Solution
A chlorine gas decomposition catalyst comprising a composite oxide of Al and at least one element selected from Ce and Co, with specific surface area, pore volume, and pore diameter characteristics, is used in conjunction with an exhaust gas treatment apparatus that includes a reactor and additional components for efficient chlorine gas decomposition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a chlorine gas decomposition catalyst including oxide(s) of Ce and/or Co is used, then chlorine gas removal efficiency is improved, but catalyst components are reduced through rubbing and delamination from the support
Solution Approach 1:
The patent uses a composite oxide material comprising Al, Ce, and Co in specific proportions (Al: 40-70 wt%, Ce: 20-50 wt%, Co: 5-20 wt%) to create a catalyst that combines the high catalytic activity needed for chlorine gas decomposition with improved structural stability. The composite oxide structure prevents component delamination while maintaining high productivity for chlorine removal.
Solution Approach 2:
The patent optimizes the compositional parameters of the catalyst by controlling the weight percentages of Al, Ce, and Co within specific ranges. This parameter optimization ensures that the catalyst achieves high chlorine gas decomposition efficiency while maintaining structural integrity and preventing component reduction during operation.
2Device complexity
If conventional catalysts are used for chlorine gas removal, then the process is simple, but catalyst components are eluted during use
Solution Approach 1:
The composite oxide catalyst with optimized Al-Ce-Co composition provides a stable structure that prevents component elution while maintaining process simplicity. The synergistic combination of these elements creates a robust catalyst framework that resists degradation.
Solution Approach 2:
The patent applies local quality by creating a heterogeneous composite oxide structure where different elements are distributed in specific phases and locations within the catalyst particles. This localized distribution optimizes both catalytic activity and structural stability, preventing component loss while maintaining ease of operation.
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 catalyst effectively decomposes chlorine gas with high efficiency and minimizes component reduction, allowing for continuous operation without frequent catalyst replacement.
Implementation Method 1
a chlorine gas decomposition catalyst, including a composite oxide (X) of Al and at least one element M1 selected from the group consisting of Ce and Co
Implementation Method 2
decompose chlorine gas contained in exhaust gas
Data Source
AI summary
[Technical Problem] To provide a chlorine gas decomposition catalyst that can remove chlorine gas contained in, for example, exhaust gas, with high efficiency, and is less likely to reduce catalyst components when used.[Solution to Problem] A chlorine gas decomposition catalyst, including a composite oxide (X) of Al and at least one element M1 selected from the group consisting of Ce and Co.