Cerium–zirconium mixed oxide nanostructures for diesel soot oxidation : synthesis and effect of structure
Αποθηκεύτηκε σε:
| Κύριος συγγραφέας: | |
|---|---|
| Ημερομηνία έκδοσης: | 2020 |
| Άλλοι συγγραφείς: | , , , , |
| Μορφή: | Article |
| Γλώσσα: | eng |
| Πηγή: | Repositório Institucional da UnB |
| Download full: | https://repositorio.unb.br/handle/10482/43380 https://doi.org/10.1039/D0RA05130F https://orcid.org/0000-0002-3351-9226 https://orcid.org/0000-0003-0042-0091 |
Περίληψη: | Nanostructured materials have been used in several branches of science and technology. Particulate matter is one of the major air pollution concerns. In this work, nanorods and nanoparticles of Ce0.8Zr0.2O2 (CZ) mixed oxides were prepared by different routes, and the use of an organic template was evaluated in diesel soot oxidation. The catalysts were characterized by several techniques including structural analysis (XRD, TEM, N2 adsorption–desorption) and activity (TPR/MS, TPO/MS). A fast TPR/MS method is proposed to calculate hydrogen consumption that can be correlated to the oxygen storage capacity (OSC). It was demonstrated that CZ-nanorods with twice the amount of template in the syntheses (CZ-NRs-2X) were very active for soot oxidation with T50% at 351 °C, and CO2 and H2O were the only oxidation products from Printex®-U (Evonik). This catalyst, reported for the first time, was subjected to up to three cycles and it showed fair activity, proving that this morphology is one of the best mixed oxides of CZ for oxidation. |
Παρόμοια τεκμήρια: Cerium–zirconium mixed oxide nanostructures for diesel soot oxidation : synthesis and effect of structure
- Phosphate capture enhancement using designed iron oxide-based nanostructures
- Effect of cerium loading on structure and morphology of modified Ce-USY zeolites
- Graphene oxide and a GO/ZnO nanocomposite as catalysts for epoxy ring-opening of epoxidized soybean fatty acids methyl esters
- Synthesis and characterization of PbS quantum dots embedded in oxide glass
- Influência do método de síntese e da adição de concentrado de terras raras na condutividade iônica de Sistema Ce-Gd-Sm
- Synthesis and characterization of PbS quantum dots embedded in oxide glass