標題: Facilitated hydrogen release kinetics from amine borane functionalization on gate-opening metal-organic framework
作者: Liao, Chi-Wei
Tseng, Po-Sen
Chang, Bor Kae
Wang, Cheng-Yu
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: Hydrogen storage;Metal-organic framework;Ammonia borane;Surface functionalization;Hydrogenation generation kinetics
公開日期: 25-Sep-2018
摘要: For the first time, we functionalized the gate-opening metal-organic framework (GO-MOF) of MIL-53(Al) with ammonia borane (AB, NH3BH3) via post-synthesis method. In this report, unusual structural breathing and dehydrogenation behaviors of AB doped MOF (MIL-53-AB) were discovered. Surface coating triggered the GO-MOF breathing phenomenon and opened the structure, and gate was closed after dehydrogenation. The dehydrogenation peak temperature was greatly reduced by 30 degrees C compared to that of pristine AB with suppressed byproduct like ammonia. The MOFs with surface coated AB exhibited remarkably fast hydrogen generation rate and corresponding low apparent activation energy, estimated at < 40 kJ/mol, which is much lower than that of crystalline AB, and even comparable to AB hydrolysis with catalysts. The ammonia borane functionalized MIL-53 has shown greatly improved dehydrogenation from solid phase of AB.
URI: http://dx.doi.org/10.1016/j.surfcoat.2018.06.084
http://hdl.handle.net/11536/148141
ISSN: 0257-8972
DOI: 10.1016/j.surfcoat.2018.06.084
期刊: SURFACE & COATINGS TECHNOLOGY
Volume: 350
起始頁: 12
結束頁: 19
Appears in Collections:Articles