Coupling the solvent-based CO2 capture processes to the metal water-splitting for hydrogen generation in a semi-continuous system

被引:5
作者
del Rio, Juan I. [1 ,2 ]
Martin, Angel [1 ]
Bermejo, Maria D. [1 ]
机构
[1] Univ Valladolid, Bioecon Res Inst, Dept Chem Engn & Environm Technol, BioEcoUva,PressTech Grp, Prado Magdalena S N, Valladolid 47011, Spain
[2] Univ Antioquia UdeA, Dept Chem Engn, Grp Proc Quim Ind, Calle 70 52-21, Medellin 050010, Colombia
关键词
Green hydrogen; H-2-economy; CO2-Economy; Metal-water splitting; Superheated water; Semicontinuous facility; ALUMINUM; GREEN; ABSORPTION; ENERGY; GAS; AL;
D O I
10.1016/j.ijhydene.2023.04.021
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Hydrogen is considered as the future energy vector. Due to scarceness in materials, obtaining hydrogen from common metals and metallic residues is gaining interest. The present work aims at coupling for the first time solvent-based CO2 capture processes with the hydrogen generation from the metal-water splitting reaction, using common elements such as Al, Zn, Mn and Fe. To do so, a novel semicontinuous facility is developed. In the process, both the CO2-Rich stream (CO2RS) and CO2 Capture-Solvent Lean stream (CO2LS) are considered. The production of H-2 increased in the order Al < Mn < Fe < Zn. For pure Al, aqueous NaOH (CO2LS) showed the highest H-2 yield, up to 85.5%, while Al chips (residue) showed outstanding performance. The experimental study showed that small particle sizes improve the H-2 yield. This technology represents an opportunity for bringing about value-added to CO2 capture by generating at the same time green hydrogen. (c) 2023 The Authors. Published by Elsevier Ltd on behalf of Hydrogen Energy Publications LLC. This is an open access article under the CC BY-NC-ND license (http:// creativecommons.org/licenses/by-nc-nd/4.0/).
引用
收藏
页码:27892 / 27906
页数:15
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