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The Recycling of Spent Ammonia Borane with HBr/AlBr 3 and Other HX/AlX 3 ‐Based Schemes
Author(s) -
Reller Christian,
Mertens Florian
Publication year - 2018
Publication title -
chempluschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.801
H-Index - 61
ISSN - 2192-6506
DOI - 10.1002/cplu.201800347
Subject(s) - ammonia borane , chemistry , catalysis , borane , ammonia , boranes , hydrogen , halide , borazine , reagent , boron , inorganic chemistry , organic chemistry , hydrogen production , boron nitride
Although the development and application of a BNH x ‐waste recycling process is one of the major prerequisites for the use of ammonia borane as hydrogen source material, most research groups in the field have focused on AB hydrogen release and only few groups have worked on the development of energetically viable recycling schemes. In our work we target the development of a closed recycling process containing three desired steps: superacid break‐up of the BNH x ‐waste, catalytic hydrodehalogenation of the generated boron halide, and base‐exchange between Et 3 NBH 3 and ammonia. Catalytic hydrodehalogenation provides a convenient means to generate B−H bonds using molecular hydrogen, avoiding potentially energetically expensive reduction reagents.