Non-Cyclic Amide Ionic Liquid Catalyst for Hydrocarbon Conversion
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Solution Overview
Problem
Current hydrocarbon conversion processes using ionic liquids are limited by high costs, which hinder their widespread adoption, despite offering advantages such as being less corrosive and non-volatile compared to traditional catalysts like HF.
Innovation Solution
The use of non-cyclic amide or thioamide based ionic liquids as catalysts in hydrocarbon conversion processes, including alkylation, oligomerization, isomerization, and disproportionation, which can be recycled and regenerated, reducing costs and maintaining catalytic activity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional catalysts like HF or sulfuric acid are used for hydrocarbon conversion, then catalytic activity is achieved, but corrosion and volatility increase
Solution Approach 1:
The patent changes the chemical parameters of the catalyst by using ionic liquids with specific cations (imidazolium, pyridinium, pyrrolidinium, ammonium) and anions (halides, tetrafluoroborate, hexafluorophosphate, triflate). This parameter change allows the catalyst to maintain high activity while reducing corrosiveness and volatility compared to traditional mineral acids
Solution Approach 2:
The patent employs composite ionic liquid catalysts formed by combining specific cations and anions to create unique catalytic systems. These composite structures provide both the acidity needed for catalysis and the stability to reduce corrosion, achieving a balance between activity and reduced harmful effects
2Object-affected harmful factors
If conventional ionic liquids are used as catalysts, then corrosion and volatility are reduced, but cost increases
Solution Approach 1:
The patent employs ionic liquids with simpler, more cost-effective cation structures (such as imidazolium and pyridinium derivatives) that can be synthesized from readily available precursors. While individual ionic liquid molecules have limited stability, their low cost allows for economical operation
Solution Approach 2:
The patent optimizes the ionic liquid structure by selecting cations and anions that balance volatility reduction with cost considerations. Specifically, shorter alkyl chains and simpler aromatic structures reduce synthesis costs while maintaining sufficient ionic character to minimize volatility
3Object-affected harmful factors
If solid catalysts are used for alkylation, then corrosion is reduced, but catalyst deactivation by water increases
Solution Approach 1:
The patent changes the physical state parameter of the catalyst from solid to liquid (ionic liquid), which fundamentally alters water interaction. The liquid ionic liquid phase can tolerate water presence without the catastrophic deactivation that occurs with solid acid catalysts, while maintaining corrosion reduction benefits
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 lowers the cost of hydrocarbon conversion processes while maintaining the benefits of ionic liquids, such as reduced corrosion and volatility, by utilizing non-cyclic amide or thioamide based ionic liquids that can be recycled and regenerated, thereby enhancing process efficiency and product quality.
Implementation Method 1
contacting a hydrocarbon feed with a non-cyclic amide or thioamide based ionic liquid catalyst in a hydrocarbon conversion zone under hydrocarbon conversion conditions to form a mixture comprising reaction products, and the non-cyclic amide or thioamide based ionic liquid catalyst
Data Source
AI summary
A hydrocarbon conversion process is described. The process involves contacting a hydrocarbon feed with a non-cyclic amide or thioamide based ionic liquid catalyst in a reaction zone under reaction conditions to form a mixture comprising reaction products, and the non-cyclic amide or thioamide based ionic liquid catalyst. Typical hydrocarbon conversion processes include alkylation, oligomerization, isomerization, disproportionation, and reverse disproportionation.