Preparation of Cerium Oxide via Microwave Heating: Research on Effect of Temperature Field on Particles
Micro–nano cerium oxide particles with regular morphology and good dispersity have been widely used in polishing and other industrial fields. Microwave heating is an effective, controllable and green heating technology. The Venturi reactor used for microwave heating developed by our team was the cor...
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| Format: | Article |
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MDPI AG
2022-06-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/12/6/843 |
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| author | Chao Lv Hong-Xin Yin Yan-Long Liu Xu-Xin Chen Ming-He Sun Hong-Liang Zhao |
| author_facet | Chao Lv Hong-Xin Yin Yan-Long Liu Xu-Xin Chen Ming-He Sun Hong-Liang Zhao |
| author_sort | Chao Lv |
| collection | DOAJ |
| description | Micro–nano cerium oxide particles with regular morphology and good dispersity have been widely used in polishing and other industrial fields. Microwave heating is an effective, controllable and green heating technology. The Venturi reactor used for microwave heating developed by our team was the core equipment utilized to study the effects of pyrolysis conditions on the purity and microstructure of cerium oxide particles. The experiments were carried out and the products were characterized using XRD, SEM and EDS. Microwave heating, fluid flow and chemical reaction were coupled using numerical simulation, the effects of microwave power, reactor location and waveguide arrangement on temperature fields were investigated. The results showed that with the microwave power increasing, the degree of crystallinity and purity of cerium oxide improved. The morphology gradually became sphere-like. Varied reactor locations and waveguide arrangements changed the gradient and dispersity of temperature fields. Bulk particles and agglomeration could be avoided, and cerium oxide particles with average size of 80 nm were produced when the reactor was located in the center of the cavity. Vertical arrangement of waveguides had the advantages of higher temperature value, gentle gradient and better dispersity. |
| first_indexed | 2024-03-10T00:03:28Z |
| format | Article |
| id | doaj.art-9f1d3d710bd1480c936c2f80caa2aaf9 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T00:03:28Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-9f1d3d710bd1480c936c2f80caa2aaf92023-11-23T16:12:52ZengMDPI AGCrystals2073-43522022-06-0112684310.3390/cryst12060843Preparation of Cerium Oxide via Microwave Heating: Research on Effect of Temperature Field on ParticlesChao Lv0Hong-Xin Yin1Yan-Long Liu2Xu-Xin Chen3Ming-He Sun4Hong-Liang Zhao5School of Control Engineering, Northeastern University, Qinhuangdao 066004, ChinaSchool of Control Engineering, Northeastern University, Qinhuangdao 066004, ChinaSchool of Control Engineering, Northeastern University, Qinhuangdao 066004, ChinaSchool of Control Engineering, Northeastern University, Qinhuangdao 066004, ChinaSchool of Control Engineering, Northeastern University, Qinhuangdao 066004, ChinaSchool of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaMicro–nano cerium oxide particles with regular morphology and good dispersity have been widely used in polishing and other industrial fields. Microwave heating is an effective, controllable and green heating technology. The Venturi reactor used for microwave heating developed by our team was the core equipment utilized to study the effects of pyrolysis conditions on the purity and microstructure of cerium oxide particles. The experiments were carried out and the products were characterized using XRD, SEM and EDS. Microwave heating, fluid flow and chemical reaction were coupled using numerical simulation, the effects of microwave power, reactor location and waveguide arrangement on temperature fields were investigated. The results showed that with the microwave power increasing, the degree of crystallinity and purity of cerium oxide improved. The morphology gradually became sphere-like. Varied reactor locations and waveguide arrangements changed the gradient and dispersity of temperature fields. Bulk particles and agglomeration could be avoided, and cerium oxide particles with average size of 80 nm were produced when the reactor was located in the center of the cavity. Vertical arrangement of waveguides had the advantages of higher temperature value, gentle gradient and better dispersity.https://www.mdpi.com/2073-4352/12/6/843microwave heatingcerium oxidetemperature fieldmorphology |
| spellingShingle | Chao Lv Hong-Xin Yin Yan-Long Liu Xu-Xin Chen Ming-He Sun Hong-Liang Zhao Preparation of Cerium Oxide via Microwave Heating: Research on Effect of Temperature Field on Particles Crystals microwave heating cerium oxide temperature field morphology |
| title | Preparation of Cerium Oxide via Microwave Heating: Research on Effect of Temperature Field on Particles |
| title_full | Preparation of Cerium Oxide via Microwave Heating: Research on Effect of Temperature Field on Particles |
| title_fullStr | Preparation of Cerium Oxide via Microwave Heating: Research on Effect of Temperature Field on Particles |
| title_full_unstemmed | Preparation of Cerium Oxide via Microwave Heating: Research on Effect of Temperature Field on Particles |
| title_short | Preparation of Cerium Oxide via Microwave Heating: Research on Effect of Temperature Field on Particles |
| title_sort | preparation of cerium oxide via microwave heating research on effect of temperature field on particles |
| topic | microwave heating cerium oxide temperature field morphology |
| url | https://www.mdpi.com/2073-4352/12/6/843 |
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