Science and Technology Production
Congress
Authorship
Paúl-Navarrón, M.
;
R. Avendaño
;
R. Tejeda
;
M. Gonzalez Sanchez
;
Lloreda-Jurado, P.J.
;
DIEUZEIDE, MARIA LAURA
;
Sepúlveda, R.
Date
2025
Publishing House and Editing Place
FEMS
Summary
Information provided by the agent in
SIGEVA
Sorption enhanced steam reforming of ethanol is an intensified process, in which it is possible to produce high purity hydrogen with low content of carbon oxides. Ideal for the production of hydrogen for fuel cells applications, minimizing the purification stages downstream the reforming reactor. Considering the production of hydrogen for fuel cells applications, the main advantage of this process is that it allows H2 production and purification in one stage, minimizing the purification stages ...
Sorption enhanced steam reforming of ethanol is an intensified process, in which it is possible to produce high purity hydrogen with low content of carbon oxides. Ideal for the production of hydrogen for fuel cells applications, minimizing the purification stages downstream the reforming reactor. Considering the production of hydrogen for fuel cells applications, the main advantage of this process is that it allows H2 production and purification in one stage, minimizing the purification stages downstream the reforming reactor.Among the most active catalysts for the ethanol reforming reaction are the ones based on Ni as active phase supported on alumina, since they are highly active and low cost. Regarding the CO2 capture process, the CaO has shown high CO2 capture capacity under the reforming temperature range, rapid CO2 capture kinetics, as well as high availability and also low cost. However, both materials have some disadvantage, as Ni is susceptible to deactivation by both carbon formation and sintering, and CaO is prone to sintering at high temperatures (around 850 ºC). Then, the development and synthesis of bifunctional materials with high active surface minimizing the distance between CO2 generation sites and CO2 sorption sites has gained relevance. Nevertheless, many researchers are developing bifunctional materials using low-tech techniques such as impregnation method, co-precipitation method, wet-mixing method or, high-tech techniques such as atomic layer deposition method and template-assisted method.Here we show a simpler method of manufacturing high porosity Ni(Al2O3-MgO)-CaO bifunctional material combining co-precipitation and colloidal process, with freezes-casting technique. The resulting structure showed an open porosity of 70% with a significant number of Ni/CaO interfaces. It reached a complete reforming of ethanol without coke formation. The CO2 capture rate was kept constant throughout the entire test. Also, no microstructure degradation was noticed.These findings are significant to confirm the improvement in the efficiency of the SESR process, by an adequate design of the manufacturing technique of the active material.
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Key Words
reformadohidrógenoCaptura CO2etanol