Related Experiment Video
Updated: Jun 27, 2026

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction
Published on: April 10, 2018
CeO2 Induced Ni-Ce Interaction Enables Efficient CO2 Methanation on Ni/Al2O3/SiC Structured Catalyst
Jiyue Xu1, Jiaxin Qian1, Xiangli Liu1
1School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 211816, China.
None:
Structured catalysts are one of the most widely used catalysts for carbon dioxide (CO2) methanation, while the interactions between the loaded catalyst and structural supports significantly affect its catalytic activity and stability. Herein, CeO2 modification was employed to regulate the effect of the interaction between Al2O3 and SiC on the Ni/Al2O3/SiC structured catalyst for CO2 methanation. The results of characterization and catalytic performance tests reveal that CeO2 promotes the formation of Ni-Ce interaction, which induces the generation of abundant oxygen vacancies and weakens the Al-mediated constraint on Ni reducibility due to Ni-Al2O3 interaction, thereby significantly boosting both activity and stability. Therefore, the optimal Ni-16CeO2/Al2O3/SiC catalyst exhibits a much higher CO2 conversion at 300-400 °C and superior stability during an 80 h long-term test in comparison with the Ni/Al2O3/SiC catalyst. This work provides a feasible strategy for designing a high-performance structured catalyst for CO2 methanation.
More Related Videos
08:13Chemical Precipitation Method for the Synthesis of Nb2O5 Modified Bulk Nickel Catalysts with High Specific Surface Area
Published on: February 19, 2018
08:40Synthesis of Metal Nanoparticles Supported on Carbon Nanotube with Doped Co and N Atoms and its Catalytic Applications in Hydrogen Production
Published on: December 6, 2021
Related Concept Videos
Catalysis
Catalysis
Heterogeneous Catalysis
Reduction of Alkynes to cis-Alkenes: Catalytic Hydrogenation
Like alkenes, alkynes can be reduced to alkanes in the presence of transition metal catalysts such as Pt, Pd, or Ni. The reaction involves two sequential syn additions of hydrogen via a cis-alkene intermediate.
SN2 Reaction: Kinetics
In a chemical reaction, a relationship exists between the concentration of reactants and the rate at which the reaction proceeds. The study to measure this relationship is known as the kinetics of a chemical reaction. Kinetic studies are used to deduce the rate law of a chemical reaction, which provides information about the species involved during the transition state of the rate-determining step. Thus, kinetic studies help to derive the mechanism of a reaction.
SN2 Reaction: Transition State
When the nucleophile approaches the electrophilic carbon with its lone pairs, the halide acts as a leaving group and moves away with the electron-pair bonded to the carbon. Dotted partial bonds represent the bonds being formed or broken...