Ionic Liquid Catalyst Regeneration via Borane Addition
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Solution Overview
Problem
Existing methods for regenerating ionic liquids used as catalysts in hydrocarbon conversion processes face challenges such as low conjunct polymer conversion rates, solid handling issues, and economic viability, particularly with metallic aluminum and electrochemical approaches.
Innovation Solution
Contacting deactivated acidic catalysts with borane compounds under mild conditions to release conjunct polymers, allowing for easy separation and recycling, and reactivating the ionic liquids without producing hazardous solids or requiring harsh conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If metallic aluminum is used for regeneration, then conjunct polymer conversion is achieved, but solid handling issues and pyrophoric safety risks occur
Solution Approach 1:
The patent replaces the mechanical/solid aluminum metal system with a chemical solution system using borane compounds dissolved in hydrocarbon solvents. This substitution eliminates solid handling operations while maintaining effective conjunct polymer conversion through chemical reaction mechanisms.
Solution Approach 2:
The patent changes the physical state parameter of the regeneration agent from solid (metallic aluminum) to liquid (borane compound in hydrocarbon solution). This parameter change enables easier handling, eliminates pyrophoric risks, and allows for more controlled regeneration conditions.
2Productivity
If electrochemical approaches are used for regeneration, then conjunct polymer removal is achieved, but economic viability deteriorates
Solution Approach 1:
The patent employs inexpensive borane compounds in hydrocarbon solvents that can be easily disposed of or regenerated after use, replacing expensive and complex electrochemical equipment and processes. This approach significantly reduces capital and operational costs while achieving effective catalyst regeneration.
Solution Approach 2:
The patent extracts the regeneration function from complex electrochemical systems and implements it through simple chemical extraction using borane compounds. This extraction of the core function eliminates unnecessary complexity and reduces economic burden.
3Reliability
If sulfuric acid or hydrofluoric acid is used as catalyst, then alkylation reaction effectiveness is maintained, but environmental hazards and corrosiveness increase
Solution Approach 1:
The patent changes the chemical composition parameter of the catalyst from highly corrosive and hazardous strong acids (sulfuric acid, hydrofluoric acid) to milder ionic liquids. This parameter change maintains catalytic effectiveness for alkylation reactions while dramatically reducing environmental hazards and corrosiveness.
Solution Approach 2:
The patent employs ionic liquids as composite alternative catalysts that combine the desirable catalytic properties of strong acids with the benefits of reduced corrosiveness and environmental friendliness. These ionic liquids serve as sustainable replacements for traditional hazardous acid catalysts.
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
Achieves high conjunct polymer conversion rates, reduces operational and capital costs, and avoids solid handling issues, enabling efficient regeneration of ionic liquids for reuse in hydrocarbon conversion processes.
Implementation Method 1
the conjunct polymer reacting with the at least one borane compound resulting in a catalyst phase and an organic phase containing the conjunct polymer and at least one boryl compound
Data Source
AI summary
A method of regenerating an acidic catalyst is described. A borane compound is contacted with an acidic catalyst that contains conjunct polymer, which releases the conjunct polymer from the acidic catalyst. The acidic catalyst can then be re-activated with acid. The conjunct polymer can be separated from the borane compound, and the borane compound can be recycled.