Solvent-Free Diborane Production With Borohydride Ionic Liquids
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Solution Overview
Problem
Existing methods for producing diborane require the use of solvents and generate solid byproducts, leading to increased costs, contamination risks, and inefficiencies in processing.
Innovation Solution
A process involving the reaction of boron halides or protic acids with borohydride ionic liquids in a solvent-free environment, producing diborane in a liquid phase without solid byproducts, using ionic liquids with low melting temperatures to facilitate efficient mixing and processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If solvents are used in diborane production, then the reaction can proceed, but production costs increase and safety/regulatory control requirements increase
Solution Approach 1:
The patent removes the solvent component from the reaction system entirely. The reaction between boron halide and alkali metal borohydride is made to proceed without any solvent, eliminating the need for solvent handling, supervision, and disposal equipment. This directly resolves the contradiction by extracting the harmful element (solvent) while maintaining reaction feasibility through optimized reactant conditions.
Solution Approach 2:
The patent changes the physical state parameters of the reactants - using low-melting-point alkali metal borohydrides that are liquid at reaction temperature, eliminating the need for solid-liquid slurry handling. This parameter change allows the reaction to proceed without solvent while maintaining good mixing and reaction efficiency, thereby reducing production complexity and cost.
2Ease of operation
If solvents are used in diborane production, then the reaction mixture can be handled, but additional equipment and handling supervision are required
Solution Approach 1:
The solvent is completely removed from the system. The reaction is designed to proceed with liquid alkali metal borohydride and gaseous boron halide directly, eliminating the need for solvent transfer equipment, storage tanks, and handling infrastructure. This extraction principle directly reduces equipment requirements while maintaining ease of operation through simplified process steps.
Solution Approach 2:
The reaction system becomes self-sufficient without external solvent medium. The liquid alkali metal borohydride serves as both reactant and reaction medium, eliminating the need for separate solvent management systems. This self-service approach reduces equipment complexity while maintaining operational ease.
3Productivity
If solid byproducts are generated, then the reaction can proceed to completion, but contamination and blockage of transfer lines occur
Solution Approach 1:
The patent changes the physical state of the byproduct from solid to liquid by selecting appropriate alkali metal borohydrides and reaction conditions. The byproduct remains in liquid phase at reaction temperature, preventing solid deposition, blockage, and contamination issues while maintaining complete reaction conversion. This parameter change resolves the contradiction between reaction completion and process reliability.
Solution Approach 2:
The patent utilizes phase transition principles by ensuring the byproduct remains in liquid phase throughout the reaction and transfer process. By controlling temperature and selecting appropriate reactants, the system avoids solidification that would cause blockages, while maintaining reaction completeness. The phase state management ensures both high productivity and process reliability.
4Ease of manufacture
If solid constituents are used, then the reaction can proceed, but processing efficiency decreases and continuous processes become difficult
Solution Approach 1:
The patent changes the physical state of the reactant from solid to liquid by using low-melting-point alkali metal borohydrides. This parameter change enables continuous processing and improves mixing efficiency while maintaining reaction feasibility. The liquid state allows for better mass transfer and reaction kinetics, directly improving processing efficiency without sacrificing reaction completeness.
Solution Approach 2:
The patent utilizes the fluid properties of liquid reactants to enable continuous flow processing. The liquid alkali metal borohydride can be pumped and circulated continuously, allowing for efficient continuous stirred tank reactions, plug flow reactions, and microreactor operations. This hydraulic approach replaces inefficient solid handling with streamlined liquid-phase processing.
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
Eliminates the need for solvents, reduces contamination risks, and enhances process efficiency by avoiding solid byproducts, enabling cost-effective and continuous production of diborane.
Implementation Method 1
mixing boron halide with borohydride ionic liquid for providing a liquid reaction mixture, the liquid reaction mixture chemically reacting for producing gaseous diborane
Implementation Method 2
mixing protic acid with borohydride ionic liquid for providing a liquid reaction mixture, the liquid reaction mixture chemically reacting for producing gaseous diborane
Data Source
AI summary
A process for producing diborane is provided which includes mixing boron halide with borohydride ionic liquid for providing a liquid reaction mixture, the liquid reaction mixture chemically reacting for producing gaseous diborane. There is also provided a related composition for producing diborane which includes boron halide and borohydride ionic liquid. Solvents are not needed in the mixture or in the composition to produce the diborane.