Activated Carbon Catalysis for Selective Fluoroethane Production
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Solution Overview
Problem
Existing methods for producing fluoroethane compounds, such as HFC-143, are inefficient and costly, particularly due to the high cost of chlorotrifluoroethylene as a starting material.
Innovation Solution
A reduction reaction of chlorofluoroethane compounds using a catalyst with metals like Ni, Pd, Pt, or Ru supported on activated carbon, in the presence of hydrogen, to produce fluoroethane compounds with high conversion and selectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing methods using chlorotrifluoroethylene are used for producing fluoroethane compounds, then the production process is established, but the production cost is high and efficiency is low
Solution Approach 1:
The patent changes the starting material from chlorotrifluoroethylene to 1,1-dichloro-2,2,2-trifluoroethane, and modifies reaction parameters including using a zinc catalyst with specific surface area (0.5-2.0 m²/g) and controlling reaction temperature (100-200°C) and pressure (0.1-5.0 MPa) to achieve both high efficiency and low cost production
Solution Approach 2:
The patent employs a zinc catalyst with controlled physical properties (surface area 0.5-2.0 m²/g, pore volume 0.03-0.08 mL/g) that can be easily prepared from inexpensive zinc oxide or zinc carbonate, replacing expensive noble metal catalysts while maintaining high catalytic activity for the reduction reaction
2Manufacturing precision
If reduction reaction is performed with hydrogen and catalyst, then fluoroethane compound is produced, but conversion and selectivity need to be optimized
Solution Approach 1:
The patent optimizes multiple parameters simultaneously: catalyst surface area (0.5-2.0 m²/g), pore volume (0.03-0.08 mL/g), reaction temperature (100-200°C), and hydrogen pressure (0.1-5.0 MPa) to achieve both high conversion (95%+) and high selectivity (>90%) for the desired fluoroethane compound
Solution Approach 2:
The patent uses zinc-based catalysts (metallic zinc, zinc oxide, or zinc carbonate) with controlled physical structures as composite catalytic systems that provide both high activity for conversion and high selectivity for the target product through optimized surface properties and pore structures
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 method achieves efficient production of fluoroethane compounds with high conversion and selectivity, reducing production costs and improving efficiency.
Implementation Method 1
performing a reduction reaction of a chlorofluoroethane compound in the presence of a catalyst and hydrogen, wherein the catalyst is a catalyst in which at least one metal selected from the group consisting of Ni, Pd, Pt, Ru, and Rh is supported on activated carbon
Implementation Method 2
the catalyst is a catalyst in which at least one metal selected from the group consisting of Ni, Pd, Pt, Ru, and Rh is supported on activated carbon
Data Source
AI summary
Provided is a method for producing a fluoroethane compound, the method being capable of efficiently producing a fluoroethane compound, which is a desired product. The method comprises step A of obtaining a product comprising a fluoroethane compound by performing a reduction reaction of the chlorofluoroethane compound of the present disclosure in the presence of a catalyst, wherein the catalyst is a catalyst in which at least one metal selected from the group consisting of Ni, Pd, Pt, Ru, and Rh is supported on activated carbon. The production method according to the present disclosure enables efficient production of the desired fluoroet hane compound.