Three kinds of CeO2 materials with different morphologies (nanorods, octahedron and nanocube) were prepared by simple hydrothermal method. Adsorption behaviors of fluoride onto the three CeO2 materials were investigated. Three CeO2 materials exhibited different adsorption performance for fluoride. The CeO2 nanorods mainly exposed {1 0 0} and {1 1 ...
Ceria-supported Pd nanoparticles are known to be efficient catalysts for vehicle exhaust purification, especially diesel oxidation. The exhaust often undergoes harsh conditions, suffering from high temperature up to similar to 750 degrees C. These conditions cause Pd nanoparticles to sinter, losing the catalytic active sites. In addition, carbonate...
Owing to the unique properties such as facile redoxability and high stability, ceria has been used for a wide range of applications including automotive emission control, catalytic combustion, hydrocarbon reforming, and electrocatalytic reactions. It is well known that enhanced chemical reactivity can be achieved on transition metal (TM)-doped ceri...
Ceria (CeO2) is an attractive catalyst because of its unique properties, such as facile redoxability and high stability. Thus, many researchers have examined a wide range of catalytic reactions on ceria nanoparticles (NPs). Among those contributions are the reports of the dopant-dependent catalytic activity of ceria. On the other hand, there have b...
Carbon monoxide production from carbon dioxide via isothermal reverse water–gas shift chemical looping (RWGS-CL) is studied with a modified iron oxide oxygen carrier material (80 wt% Fe2O3– Ce0.5Zr0.5O2). The material is characterized by TEM, XRD and thermogravimetry at temperatures from 750 8C to 850 8C and gas mole fractions of H2 and CO2 from 0....
Aliovalently Ce3+-doped Li4Ti5O12 (LTO) is firstly synthesized by a sol-gel method using Ce(CH3COOH)(3) as the dopant and CH3COOLi/(C4H9O)(4)Ti as starting materials. The structure and morphology of Ce3+-doped LTO with various doping level (Li4Ti5-xCexO12; x = 0, 0.05, 0.10, 0.15 and 0.20) are characterized by XRD, EDX, Raman, XPS, SEM and TEM. Pur...
In this work, we prepared a novel structure comprising of raspberry-like CeO2 deposited on CuO microspheres (Ce-CuO) for Rochow reaction. The synthesis was carried out via a facile one-pot hydrothermal reaction without using any template, in which, the basic copper carbonate microspheres were first formed via self-assembly of basic copper carbonate...
The design and synthesis of highly active non-noble metal oxide catalysts, such as transition- and rare-earth-metal oxides, have attracted significant attention because of their high efficiency and low cost and the resultant potential applications for the degradation of volatile organic compounds (VOCs). The structure-activity relationships have b...
Au nanoparticles supported on Ce-Zr oxides were prepared and characterized in order to study the role of the support in the oxidative esterification of aldehydes in the presence of molecular oxygen. Ce-Zr solid solutions were synthesized by using (NH4)(2)Ce(NO3)(6) as a precursor, while the mixed oxides were obtained by using a Ce(NO3)(3) precurso...
Different compositions of Co3O4 catalysts on CeO2-ZrO2 solid solution (Ce0.9Zr0.1O2 and Ce0.8Zr0.2O2) have been studied for the oxidation of propylene. The optional amount of Co3O4 active phase on CeO2-ZrO2 support of 30 wt% was found. The mixed Co3O4-CeO2-ZrO2 with the same composition of the optimal supported ones showed approximately the same ac...
