The Influence of Deposition Methods of Support Layer on Cordierite Substrate on the Characteristics of a MnO2–NiO–Co3O4/Ce0.2Zr0.8O2/Cordierite Three Way Catalyst
Abstract
:1. Introduction
2. Experimental Section
2.1. Materials
2.1.1. Preparation of Cordierite Pellets
2.1.2. Preparation of Ce0.2Zr0.8O2 Powder
2.2. Deposition Methods of Ce0.2Zr0.8O2 Support on Cordierite Substrate
2.2.1. In Situ Solid Combustion (SC-120 and SC-420)
2.2.2. Hybrid Deposition (HD)
2.2.3. Secondary Growth on Ce0.2Zr0.8O2 Seeds (Seed)
2.2.4. Suspension (Su)
2.2.5. Double Deposition: A Combination of Wet Impregnation and Suspension (DD)
2.3. Preparation of the Complete Catalyst
2.4. Material Characterization
3. Results and Discussion
3.1. Influence of Deposition Methods on Surface Areas of Ce0.2Zr0.8O2/Cordierite Samples
Samples | Deposition method | BET surface area (m2/g) | wt.% loading of Ce0.2Zr0.8O2 on cordierite | |
---|---|---|---|---|
Coated pellets | Ce0.2Zr0.8O2 powder | |||
CordxH8 | No deposition | 20 | - | - |
SC-120 | In situ solid combustion, oven temperature 120 °C | 18 | 50 | 3.84 |
SC-420 | In situ solid combustion, oven temperature 420 °C | 14 | 46 | 10.09 |
HD | Hybrid deposition | 18 | 33 | 0.98 |
Seed | Secondary growth on Ce0.2Zr0.8O2 seeds | 8 | 46 (seeding) 117 (hydrothermal) | - |
Su | Suspension | 24 | 74 | 3.5 |
DD | Double deposition method | 25 | 56 | 4.39 |
3.2. Influence of the Deposition Methods on the Morphology of Ce0.2Zr0.8O2/Cordierite Samples
3.3. Characterization of the Complete Catalyst
Elements | Ca.2 MnO2–NiO–Co3O4/cordierite | Ca.3 MnO2–NiO–Co3O4/Ce0.2Zr0.8O2/cordierite |
---|---|---|
Mn | 14.6 | 21.4 |
Co | 42.5 | 29.8 |
Ni | 42.9 | 22.0 |
Ce | 0 | 8 |
Zr | 0 | 18.8 |
3.4. Catalytic Activities of the Final Catalysts
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Pham, P.T.M.; Le, M.T.; Nguyen, T.T.; Bruneel, E.; Van Driessche, I. The Influence of Deposition Methods of Support Layer on Cordierite Substrate on the Characteristics of a MnO2–NiO–Co3O4/Ce0.2Zr0.8O2/Cordierite Three Way Catalyst. Materials 2014, 7, 6237-6253. https://doi.org/10.3390/ma7096237
Pham PTM, Le MT, Nguyen TT, Bruneel E, Van Driessche I. The Influence of Deposition Methods of Support Layer on Cordierite Substrate on the Characteristics of a MnO2–NiO–Co3O4/Ce0.2Zr0.8O2/Cordierite Three Way Catalyst. Materials. 2014; 7(9):6237-6253. https://doi.org/10.3390/ma7096237
Chicago/Turabian StylePham, Phuong Thi Mai, Minh Thang Le, Tien The Nguyen, Els Bruneel, and Isabel Van Driessche. 2014. "The Influence of Deposition Methods of Support Layer on Cordierite Substrate on the Characteristics of a MnO2–NiO–Co3O4/Ce0.2Zr0.8O2/Cordierite Three Way Catalyst" Materials 7, no. 9: 6237-6253. https://doi.org/10.3390/ma7096237