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Highly efficient, low-temperature hydrogen release from perhydro-benzyltoluene using reactive distillation
Energy & Environmental Science ( IF 32.5 ) Pub Date : 2020-08-18 , DOI: 10.1039/d0ee01155j
M. Geißelbrecht 1, 2, 3, 4 , S. Mrusek 1, 2, 3, 4 , K. Müller 4, 5, 6, 7 , P. Preuster 4, 5, 6, 7 , A. Bösmann 1, 2, 3, 4 , P. Wasserscheid 1, 2, 3, 4, 5
Affiliation  

The need to supply significant amounts of heat at the high temperature level required thermodynamically for cycloalkane dehydrogenation has so far been seen as the main hurdle to bring the otherwise highly attractive Liquid Organic Hydrogen Carrier (LOHC) technology to broad technical use. The LOHC technology promises infrastructure-compatible storage and transport of hydrogen in chemically bound form, e.g. for long-term energy storage, global energy logistics and heavy-duty mobility. Our contribution shows that hydrogen release from the hetero-atom free, pure hydrocarbon LOHC compound perhydro-benzyl toluene is possible at temperatures down to 200 °C, if the operation is carried out in a reactive distillation column under reduced pressure. Such low temperature dehydrogenation of hydrocarbon-based LOHC systems facilitates heat integration with waste heat sources and the energetic use of the released hydrogen considerably, and this will greatly enhance the attractiveness of LOHC-based hydrogen storage for many applications.

中文翻译:

使用反应蒸馏从全氢苄基甲苯中高效释放低温氢气

迄今为止,对于将环烷烃脱氢的热力学所需要的高温水平的大量热量供给的需求,已被视为将原本非常有吸引力的液态有机氢载体(LOHC)技术推广到广泛的技术应用的主要障碍。LOHC技术承诺以化学键合形式(例如)与基础设施兼容地存储和运输氢气用于长期储能,全球能源物流和重型机动性。我们的贡献表明,如果在减压下在反应蒸馏塔中进行操作,则在低至200°C的温度下,有可能从无杂原子的纯烃LOHC化合物全氢苄基甲苯中释放氢。烃基LOHC系统的这种低温脱氢促进了与废热源的热整合,并显着地有效利用了释放的氢,这将大大提高LOHC基储氢在许多应用中的吸引力。
更新日期:2020-09-16
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