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Sorption-Enhanced Ethanol Steam Reforming Process in a Fixed-Bed Reactor
Industrial & Engineering Chemistry Research ( IF 4.2 ) Pub Date : 2018-08-17 , DOI: 10.1021/acs.iecr.8b01657
R. Belén Menendez 1 , Cecilia Graschinsky 1 , Norma E. Amadeo 1
Affiliation  

Sorption-enhanced ethanol steam reforming is an alternative to nonrenewable sources to produce high purity hydrogen by simplifying the purification train required to obtain cell grade hydrogen. In this work, NiMgAl hydrotalcite was used as a catalyst precursor and CaO as a sorbent. The catalyst–sorbent configuration in the fixed-bed reactor, the effect of the sorbent/catalyst mass ratio, and the reaction temperature were the focus of our study. It was found that the well-mixed catalyst and sorbent configuration resulted in the highest hydrogen purity in the prebreakthrough period and the lowest CO concentration. Besides, it was possible to produce high purity hydrogen (>95%) at 723 K with a hydrogen yield equal to that obtained at 873 K without sorbent. Finally, it was corroborated that after 20 reaction/regeneration cycles the CO concentration was still lower than that obtained at the WGS reactor exit.

中文翻译:

固定床反应器中增强吸附的乙醇蒸汽重整工艺

吸附增强的乙醇蒸汽重整是不可再生资源的替代方法,可通过简化获得细胞级氢气所需的纯化流程来生产高纯度氢气。在这项工作中,NiMgAl水滑石被用作催化剂前体,而CaO被用作吸附剂。固定床反应器中的催化剂-吸附剂配置,吸附剂/催化剂质量比的影响以及反应温度是我们研究的重点。发现充分混合的催化剂和吸附剂构型在预突破期间导致最高的氢纯度和最低的CO浓度。此外,有可能在723 K下生产高纯度氢气(> 95%),其氢气产率等于在没有吸附剂的情况下在873 K下获得的氢气产率。最后,
更新日期:2018-08-18
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