Carbon Particle Synthesis With High Purity and Controlled Surface Area
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Solution Overview
Problem
Existing carbon particles, such as carbon blacks and nanotubes, face challenges related to impurities, size dimensions, and resource intensity, which affect their performance and purity in various applications.
Innovation Solution
The development of carbon particles with specific properties, including a surface area/electron microscope surface area ratio greater than or equal to 1.3, a lattice constant greater than 3.0 nm, and a nitrogen surface area between 30 m2/g and 400 m2/g, while maintaining low levels of impurities such as PAHs, sulfur, and metal contaminants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If carbon particles are produced by conventional chemical processes, then production cost and resource intensity are reduced, but impurity levels (PAHs, sulfur, metal contaminants) increase
Solution Approach 1:
The patent applies parameter changes by controlling reaction temperature, pressure, and catalyst composition during carbon particle synthesis. By optimizing these parameters, the process achieves high purity products with PAHs <1 ppm, sulfur <50 ppm, and metal contaminants <10 ppm while maintaining production efficiency through a single-reactor design.
2Area of stationary object
If carbon particles have high surface area, then performance in energy storage and composite applications is improved, but particle size control and structural uniformity become more difficult
Solution Approach 1:
The patent controls particle size and surface area by adjusting reaction parameters including temperature gradients, pressure conditions, and precursor feed rates. This enables production of carbon particles with surface areas of 30-400 m²/g and D50 sizes of 1-10 micrometers with narrow size distributions, achieving both high surface area and manufacturing precision.
Solution Approach 2:
The patent employs preliminary action by using pre-synthesized catalyst particles with controlled pore structures and surface properties before the main carbonization reaction. This pre-prepared catalyst system enables better control over nucleation and growth rates, resulting in uniform particle sizes and high surface areas.
3Object-generated harmful factors
If carbon particles are produced in multiple processing steps, then purity and structural control are improved, but production time and complexity increase
Solution Approach 1:
The patent merges multiple processing functions into a single reactor system that simultaneously performs catalysis, carbonization, and particle formation. This integrated approach achieves high purity carbon particles with controlled structure without requiring separate reactors for each processing step, reducing both device complexity and production time.
Solution Approach 2:
The catalyst system employed in the patent serves multiple functions: it catalyzes the carbonization reaction, controls particle nucleation, regulates growth rates, and influences final particle morphology. This multi-functional catalyst enables high purity and structural control within a single processing step, eliminating the need for multiple specialized reactors.
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
These carbon particles exhibit enhanced purity, surface area, and structural properties, making them suitable for applications in energy storage devices, tires, paints, and coatings, while minimizing environmental impact and operational costs.
Implementation Method 1
The carbon particle may have an affinity to adsorb water from an 80% relative humidity atmosphere of less than about 0.5 ml (milliliter) of water per square meter of surface area of the carbon particle
Data Source
AI summary
Particles with suitable properties may be generated. The particles may include carbon particles.