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Reductive dechlorination of BCl3 for efficient ammonia borane regeneration
Yingbin Tan1, Lijun Zhang, Xiaowei Chen
1Department of Materials Science, Fudan University, Shanghai 200433, China. yuxuebin@fudan.edu.cn.
Dalton Transactions (Cambridge, England : 2003)
|November 20, 2014
Summary
This study presents a novel method for regenerating ammonia borane (AB) using tributyltin hydride as a reductant and a helper ligand for efficient synthesis. This process achieves high yields of ammonia borane under ambient conditions.
Area of Science:
- Chemical Synthesis
- Materials Science
- Green Chemistry
Background:
- Ammonia borane (AB) is a promising hydrogen storage material.
- Efficient regeneration of ammonia borane is crucial for its practical application.
- Existing regeneration methods can be complex or inefficient.
Purpose of the Study:
- To develop a complete and efficient ammonia borane regeneration process.
- To utilize readily available reagents for AB synthesis.
- To achieve high yields of AB under mild conditions.
Main Methods:
- Employed tributyltin hydride (Bu3SnH) as a reductant for the reductive dechlorination of boron trichloride (BCl3).
- Utilized N,N-diethylaniline (Et2PhN) as a 'helper ligand' to form Et2PhN·BH3.
- Conducted a base-exchange reaction at ambient temperature for AB generation.
Main Results:
- Successfully demonstrated a complete regeneration cycle for ammonia borane.
- Achieved a high yield of ammonia borane through the described method.
- The process operates effectively at ambient temperature, simplifying the procedure.
Conclusions:
- The developed method offers an efficient and practical route for ammonia borane regeneration.
- The use of Bu3SnH and Et2PhN provides a synergistic approach to AB synthesis.
- This advancement supports the potential for wider adoption of ammonia borane in hydrogen storage applications.
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