Ammonium octahydrotriborate (NH4B3H8): new synthesis, structure, and hydrolytic hydrogen release |
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| Authors: | Huang Zhenguo Chen Xuenian Yisgedu Teshome Meyers Edward A Shore Sheldon G Zhao Ji-Cheng |
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| Affiliation: | Department of Materials Science and Engineering, The Ohio State University, Columbus, Ohio 43210, USA. |
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| Abstract: | A metathesis reaction between unsolvated NaB(3)H(8) and NH(4)Cl provides a simple and high-yield synthesis of NH(4)B(3)H(8). Structure determination through X-ray single crystal diffraction analysis reveals weak N-H(δ+)---H(δ-)-B interaction in NH(4)B(3)H(8) and strong N-H(δ+)---H(δ-)-B interaction in NH(4)B(3)H(8)·18-crown-6·THF adduct. Pyrolysis of NH(4)B(3)H(8) leads to the formation of hydrogen gas with appreciable amounts of other volatile boranes below 160 °C. Hydrolysis experiments show that upon addition of catalysts, NH(4)B(3)H(8) releases up to 7.5 materials wt % hydrogen. |
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