کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7707246 | 1497316 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The mechanism of the chain-growth of ammoniaborane: A classic Lewis pairs catalysed by a Frustrated Lewis Pairs
ترجمه فارسی عنوان
مکانیسم رشد زنجیره ای آمونیا بورن: جفت های کلاسیک لوئیس توسط یک جفت لوئیس نا امید شده
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
چکیده انگلیسی
Ammonia borane (AB) is an outstanding hydrogen-storage material, which has been gained many attentions. It can be regenerated from polyborazylene based on the experimental study, but the uncontrollable BN dehydro-coupling in the polymerization from AB to borazine is still a problem for the continuous application of AB. Frustrated Lewis Pairs (FLPs) is a landmark discovery to dissociate small molecules by activating strong nonpolar bonds reversibly, which is recently applied to directly polymerize three molecular AB to a cyclotriborazylene (CTB, B3N3H12, which transforms into borazine after releasing 3 equiv. H2). Here we analyse how a dimethylxanthene-derived FLPs catalyse AB to CTB. The cyclization experiences three steps by our calculation: the connection between FLPs and AB (1), the growth of BN chain (2) and an intermolecular dehydrogenation between terminal N-Hδ+ and δâHB (3), which gives us a clue of a possible reversibility of the dehydrogenation of AB and broadens the applicability of this concept in the relevant catalyst design.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 9, 1 March 2018, Pages 4177-4185
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 9, 1 March 2018, Pages 4177-4185
نویسندگان
Kun Wang, Long-jiu Cheng, Jian-guo Zhang, Xue-bin Yu,