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Synthesis of Ammonia Borane Nanoparticles and the Diammoniate of Diborane by Direct Combination of Diborane and Ammonia
Author(s) -
Song Yuanzhou,
Ma Nana,
Ma Xiaohua,
Fang Fang,
Chen Xuenian,
Guo Yanhui
Publication year - 2016
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201600367
Subject(s) - diborane , ammonia borane , ammonia , dehydrogenation , chemistry , nanoparticle , boranes , inorganic chemistry , atmospheric temperature range , nuclear chemistry , hydrogen , solvent , boron , materials science , catalysis , organic chemistry , nanotechnology , physics , meteorology
Pure nanoparticle ammonia borane (NH 3 BH 3 , AB) was first prepared through a solvent‐free, ambient‐temperature gas‐phase combination of B 2 H 6 with NH 3 . The prepared AB nanoparticle exhibits improved dehydrogenation behavior giving 13.6 wt. % H 2 at the temperature range of 80–175 °C without severe foaming. Ammonia diborane (NH 3 BH 2 (μ‐H)BH 3 , AaDB) is proposed as the intermediate in the reaction of B 2 H 6 with NH 3 based on theoretical studies. This method can also be used to prepare pure diammoniate of diborane ([H 2 B(NH 3 ) 2 ][BH 4 ], DADB) by adjusting the ratio and concentration of B 2 H 6 to NH 3 .
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