Importance of Edge and Corner Sites on CeO2 Nanoparticles for Direct Conversion of Methane to Methanol
Source abstract
Abstract
The effect of CeO2 nanoparticle size on catalysis performance during continuous direct conversion of CH4 to CH3OH at low temperatures was studied by experiment and density functional theory (DFT). Methanol is the only liquid-phase product, and small CeO2 nanoparticles are beneficial for methanol yield. Water could undergo dissociative adsorption on different CeO2 sizes at 180 °C. As a result, OH blocked Ce sites, and methanol was synthesized through the reaction CH4* + OH* → CH3OH* + H*. During the reaction, the main role of H2O is to provide oxygen species for the conversion of methane to methanol, and O2 is used to prevent CeO2 excessive reduction. In summary, the CH3OH yield is related to low-coordinate edge or corner Ce atoms of CeO2.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Catalytic Processes in Materials Science · Catalysis and Oxidation Reactions · Catalysts for Methane Reforming
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan, Shanxi 030024, PR China
College of Textile Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, PR China
College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, Shanxi 030024, PR China
Funding
ShanXi Science and Technology Department · National Natural Science Foundation of China · Scienti?c and Technological Key Project of Industrial Research of JinZhong · Shanxi Province
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