Resistive Heating for Nanostructured Catalyst Growth
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Solution Overview
Problem
Current methods for producing nanostructured materials, such as catalytic materials, are costly, time-consuming, and inefficient, with challenges in controlling size and shape, and often require multiple devices and materials, leading to high energy consumption and thermal inertia during start-up processes in chemical reactions.
Innovation Solution
The process involves using resistive heating to produce nanostructured materials directly onto an electrically conductive layer embedded in a substrate, allowing for controlled deposition and heating of precursor materials to form catalytic materials, reducing the need for additional components and enabling efficient energy use by localizing heating to the conductive layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional chemical processes or deposition methods are used to produce nanostructured materials, then the materials can be formed, but the size and shape control of the resulting nanostructures is difficult
Solution Approach 1:
The patent replaces complex chemical processes with a physical field-based approach using radio frequency (RF) energy and controlled atmosphere. The RF heating system provides precise thermal control without requiring complex chemical reagents or multi-step deposition processes, thereby improving nanostructure size and shape control while simplifying the manufacturing procedure.
Solution Approach 2:
The patent utilizes controlled changes in RF power, temperature, and atmospheric composition (reactive vs. inert gases) to precisely control the formation and morphology of nanostructures. By adjusting these parameters, the process achieves fine control over nanostructure size and shape without requiring complex chemical formulations or multiple processing steps.
2Ease of manufacture
If multiple devices and materials are used in the production process, then the nanostructured materials can be formed, but the manufacturing cost increases
Solution Approach 1:
The patent combines multiple functions into a single integrated system: the RF heating system simultaneously provides thermal energy for material formation, the controlled atmosphere manages chemical reactions and prevents oxidation, and the direct in-situ formation eliminates the need for separate deposition and handling steps. This consolidation reduces the number of components and materials required, thereby lowering manufacturing costs.
Solution Approach 2:
The process enables self-service by forming nanostructures directly in-situ within the reaction chamber without requiring external deposition equipment or post-processing handling. The controlled atmosphere automatically protects the nanostructures during formation, and the RF system self-regulates the thermal profile, eliminating the need for multiple separate devices and reducing overall system complexity and cost.
3Use of energy by moving object
If conventional heating methods are used during start-up, then the catalytic material can be heated to reaction temperature, but the thermal inertia is large and energy consumption is high
Solution Approach 1:
The patent replaces conventional thermal conduction heating with direct radio frequency electromagnetic heating. The RF energy couples directly with the catalytic material or support structure, providing rapid and efficient heating that overcomes the thermal inertia problem. This direct energy transfer significantly reduces both the time and energy required for start-up compared to conventional indirect heating methods.
Solution Approach 2:
The RF heating system can be applied in controlled pulses or cycles, allowing for precise temperature management during start-up. This periodic or controlled application of energy enables rapid heating to the required reaction temperature while minimizing energy waste, thereby reducing both start-up time and energy consumption.
4Object-affected harmful factors
If high temperatures are used during chemical reactions, then coking can be prevented, but the energy consumption increases
Solution Approach 1:
The patent employs a controlled inert or reactive atmosphere during the chemical reaction process. This controlled environment prevents coking by managing the chemical conditions that lead to carbon deposition, allowing the reaction to proceed at lower temperatures than would otherwise be required. The atmosphere control eliminates the need for excessive thermal energy input to prevent coking, thereby reducing energy consumption while maintaining catalyst performance.
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 reduces manufacturing costs, enhances control over nanostructure size and shape, and minimizes energy consumption by allowing for efficient start-up of chemical reactions at lower temperatures, preventing coking, and enabling scalable production of high-performance catalysts.
Implementation Method 1
the use of resistive heating (e.g., with applied voltage) of an electrically conductive layer of micro- or nanostructures doped with, or in the presence of, a precursor material to obtain the nanostructured material
Implementation Method 2
the heat from the device to transform the precursor material into catalytic material
Data Source
AI summary
Disclosed is a method for making a material having supported micro- and/or nanostructures, the method includes (a) obtaining a substrate comprising a precursor material and an electrically conductive layer of micro- or nanostructures embedded into at least a portion of a first surface of the substrate, and (b) applying a voltage across the electrically conductive layer to heat the micro- or nanostructures, wherein the heat converts the precursor material into micro- and/or nanostructures.