Reforming catalyst
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Solution Overview
Problem
Existing electric-field catalysts require a minimum reaction temperature of 450°C to induce catalytic reactions, limiting their efficiency and applicability.
Innovation Solution
Incorporating a high-resistance layer between a porous honeycomb substrate and a catalyst layer, where the high-resistance layer has a higher electrical resistivity than the catalyst layer, to focus electric current on the catalyst layer, allowing reactions to occur at lower temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a conventional electric-field catalyst is used, then the catalytic reaction can be induced, but the reaction temperature must be maintained at 450°C or higher
Solution Approach 1:
The catalyst is segmented into multiple functional layers: a porous honeycomb substrate providing structural support and electrical conductivity, a catalyst layer containing active catalytic materials, and a high-resistance layer positioned between them to control electric field distribution. This segmentation allows each layer to perform its specific function optimally, enabling low-temperature catalysis while maintaining reaction effectiveness.
Solution Approach 2:
The high-resistance layer is strategically positioned between the substrate and catalyst layer to create a localized electric field enhancement zone. This local modification of electrical properties concentrates the electric field at the catalyst layer, enabling effective catalytic reactions at lower temperatures without requiring high temperatures across the entire catalyst structure.
2Use of energy by stationary object
If the reaction temperature is reduced to 300°C, then energy consumption and material requirements are decreased, but the catalytic reaction cannot be effectively induced with conventional catalysts
Solution Approach 1:
The invention changes the electrical resistance parameter of the catalyst structure by introducing a high-resistance layer with resistivity of 10^-3 to 10^3 Ω·m, which is higher than the catalyst layer. This parameter change enables the catalyst to function effectively at lower temperatures (300°C) by optimizing the electric field distribution and energy utilization at the catalyst-active site interface.
Solution Approach 2:
The high-resistance layer acts as an intermediary between the electrically conductive substrate and the catalyst layer. It mediates the electric field distribution, concentrating electrical energy at the catalyst layer where it is needed for the catalytic reaction, thereby enabling effective reactions at lower temperatures with reduced energy consumption.
3Temperature
If a high-resistance layer is added between the substrate and catalyst layer, then low-temperature catalysis is enabled, but the device complexity increases
Solution Approach 1:
The high-resistance layer performs multiple functions simultaneously: it controls electric field distribution to enable low-temperature catalysis, provides structural support for the catalyst layer, and maintains overall catalyst integrity. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity while achieving the temperature reduction goal.
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 achieves catalytic reactions at temperatures as low as 300°C, enhancing efficiency and reducing material usage while maintaining reaction effectiveness.
Implementation Method 1
a high-resistance layer that is higher in electrical resistivity than the catalyst layer between the porous honeycomb substrate and the catalyst layer
Implementation Method 2
electric-field catalysts which are used under application of an electric field
Implementation Method 3
it can induce a catalytic reaction even at a relatively low temperature as compared to general catalysts when used while electric energy is imparted thereto
Implementation Method 4
a porous honeycomb substrate
Data Source
AI summary
An electric field catalyst that includes: a porous honeycomb substrate; a catalyst layer covering a surface of the porous honeycomb substrate; and a high-resistance layer that is higher in electrical resistivity than the catalyst layer between the honeycomb substrate and the catalyst layer.