期刊
APPLIED SURFACE SCIENCE
卷 548, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2021.149198
关键词
Thermochemical water splitting; Hydrogen generation; Redox reaction; Material design; Thermodynamics
类别
资金
- National Research Foundation of Korea (NRF) - Korea government (MSIT) [2015R1A5A1037548]
- Future Materials Discovery Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning [NRF2019M3D1A2104158]
- Industrial Strategic Technology Development Program - Ministry of Trade, Industry & Energy (MOTIE, Korea) [20010460]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20010460] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The use of fossil fuels poses a threat to the environment and leads to global warming, prompting research into renewable hydrogen energy production. Thermochemical water splitting using metal oxides is a promising method, but preventing catalytic deactivation at high temperatures remains a significant challenge.
The use of fossil fuels threatens environmental systems and causes an increase in greenhouse gas emissions, thereby leading to global warming. Such a scenario has spurred research into renewable hydrogen energy production as a strategy to replace fossil fuels. In this regard, thermochemical water splitting using redox reactions with metal oxides, which generates neither CO nor CO2 gas, is a promising approach with advantages over general hydrocarbon steam reforming. However, preventing catalytic deactivation due to nanocatalyst agglomeration or sintering during thermocycling at high temperatures (>800 degrees C) is a significant challenge. In this work, the design, synthesis, and characterization of a new CeO(2)(-)based catalytic model were carried out through a combination of theoretical and experimental approaches. From thermodynamic simulations, an optimal support material was first selected. A CeO2 nanoparticle-dispersed porous support structure was subsequently synthesized. The recyclable CeO2-support structure showed good capability and repeatability for hydrogen generation during consecutive thermocycles with no undesirable side reactions or particle sintering. It is anticipated that the results of this study will facilitate greater efficiency in the development of catalytic materials and allow for more effective materials to be designed so as to accelerate the realization of economical green energy production based on thermochemical cycles.
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