Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 42, Issue 2, Pages 1451-1455Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2016.06.231
Keywords
Ammonia borane; Hydrogen storage; Green synthesis; Safe; Scalable
Categories
Funding
- Herbert C. Brown Center for Borane Research
- Purdue Research Foundation
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Ammonia borane (AB) has been synthesized in very high purity (>99%) from sodium borohydride and ammonium sulfate under ambient conditions in tetrahydrofuran (THF) at 1 M concentration using water as the promoter. Less than quantitative yields of AB are obtained due to a competing hydrolysis of the primary metathesis product ammonium borohydride. The solvent THF can be substituted with a greener alternative, 2-methylTHF, with no loss in yield or purity and complete recyclability. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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