Chromium Oxide Catalyst with Group 5 Elements for Fluoroolefin Production
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Solution Overview
Problem
Current processes for producing fluoroolefins using chromium oxide catalysts suffer from low conversion rates, high facility costs, generation of impurities, and catalyst activity deterioration, leading to inefficient and costly production.
Innovation Solution
Employing chromium oxide or fluorinated chromium oxide catalysts containing Group 5 elements such as V, Nb, or Ta, which improve starting material conversion and selectivity of fluoroolefins, while inhibiting catalyst deterioration, thereby enabling efficient production of fluoroolefins.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If chromium oxide catalyst is used for producing fluoroolefin, then ease of industrial use is improved, but conversion of starting material deteriorates
Solution Approach 1:
The patent applies composite materials by combining chromium oxide with Group 5 elements (V, Nb, Ta) to create a composite catalyst system. This composite structure allows the catalyst to maintain ease of industrial use while significantly improving starting material conversion through synergistic effects between the different metal components.
Solution Approach 2:
The patent changes the chemical composition parameters of the catalyst by incorporating specific ratios of Group 5 elements with chromium oxide. This parameter modification transforms the catalyst's performance characteristics, achieving both high conversion and industrial applicability.
2Ease of manufacture
If chromium oxide catalyst is used for producing fluoroolefin, then ease of industrial use is improved, but yield of target fluoroolefin deteriorates
Solution Approach 1:
The composite catalyst system of chromium oxide and Group 5 elements enhances selectivity toward the target fluoroolefin product. The synergistic interaction between metal components promotes the desired reaction pathway while suppressing side reactions, thereby improving yield without sacrificing industrial ease of use.
Solution Approach 2:
The patent applies local quality by creating specific active sites on the catalyst surface through the combination of different metal oxides. These localized regions with optimized electronic and geometric properties facilitate selective fluorination to produce the target fluoroolefin with higher yield.
3Ease of manufacture
If chromium oxide catalyst is used for producing fluoroolefin, then ease of industrial use is improved, but catalyst activity deteriorates
Solution Approach 1:
The composite catalyst system provides enhanced stability and sustained activity through the synergistic effect of chromium oxide and Group 5 elements. The different metal components work together to maintain catalytic activity over extended operation periods, ensuring reliable performance for industrial applications.
Solution Approach 2:
The patent applies beforehand cushioning by designing a catalyst composition that inherently resists deactivation. The Group 5 elements provide structural and electronic stabilization to the chromium oxide, preventing catalyst activity deterioration before it occurs during the reaction process.
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 use of catalysts with Group 5 elements enhances the conversion and selectivity of fluoroolefins, reducing production costs and minimizing impurities, resulting in a more efficient and economically viable process for producing fluoroolefins.
Implementation Method 1
reacting, in a vapor phase, a fluorinating agent and at least one chlorine-containing compound in the presence of at least one catalyst selected from the group consisting of chromium oxide containing a Group 5 element and fluorinated chromium oxide containing a Group 5 element
Data Source
AI summary
This invention provides a process for producing a fluoroolefin comprising reacting, in a vapor phase, a fluorinating agent and a chlorine-containing alkene or a chlorine-containing alkane in the presence of at least one catalyst selected from the group consisting of chromium oxide containing a Group 5 element and fluorinated chromium oxide containing a Group 5 element. According to the process of the present invention, the target fluoroolefin can be obtained with high starting material conversion and good selectivity.