| Influence of Rare-Earth Promoters (Ce, Zr and La) on Catalytic Performance of Copper-Based Catalyst in Toluene Oxidation | |
Hu, Guangtao1,2; Zhang, Zirui3; Wang, Chang'an1; Li, Guojie2; Zhou, Dandan2; Wang, Jinshi1,2; Che, Defu1; Kang, Running3
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| 通讯作者 | Che, Defu(dfche@mail.xjtu.edu.cn) ; Kang, Running(kangrunning@imech.ac.cn) |
| 发表期刊 | COMBUSTION SCIENCE AND TECHNOLOGY
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| 2023-11-29 | |
| 页码 | 19 |
| ISSN | 0010-2202 |
| 摘要 | Copper-infused mixed metal oxides have been identified as powerful catalysts for eliminating volatile organic compounds (VOCs) due to their widespread availability and cost-effectiveness. The copper metal oxide catalysts were synthesized using the sol-gel method and promoted with rare earth elements, La, Ce, and Zr, to catalyze the oxidation of toluene. Compared to all tested catalysts, CuLaOx demonstrates the least activity igniting activity even though La appears to enhance copper dispersion and generate a large number of oxygen species on the surface. CuZrOx displays remarkable thermal stability, resulting in a minimal amount of lattice oxygen participating in toluene oxidation. The introduction of Ce into the CuCeOx catalyst enhances its activity significantly, attributed to the exceptional reducibility of copper species. Therefore, the TOF for the CuCeOx, CuLaOx and CuZrOx catalysts are 9.23-24.8 x 10-3 s-1, 1.29-6.22 x 10-3 s-1, and 1.05-10.03 x 10-3 s-1 at 200-400 degrees C, respectively. The infrared spectra, observed at varying temperatures during toluene oxidation, were presented. Interestingly, all catalysts demonstrated a comparable reaction pathway. The catalytic oxidation mechanism is expected to proceed via the intermediates of toluene-alkoxide-aldehydic-carboxylic acid, ultimately culminating in complete degradation to CO2 and H2O. This study establishes a theoretical foundation for the judicious selection of suitable rare earth elements as promoters, enabling the development of copper-based catalysts for efficient volatile organic compound (VOC) removal in industrial settings. |
| 关键词 | Copper rare-earth VOCs oxidation toluene IR spectra |
| DOI | 10.1080/00102202.2023.2288671 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:001120786400001 |
| 关键词[WOS] | SELF-SUSTAINED COMBUSTION ; COBALT CATALYSTS ; OXIDE ; METHANE ; FACILE |
| WOS研究方向 | Thermodynamics ; Energy & Fuels ; Engineering |
| WOS类目 | Thermodynamics ; Energy & Fuels ; Engineering, Multidisciplinary ; Engineering, Chemical |
| 资助项目 | YLU-DNL Fund[2021004] ; Key R&D Program of ShaanXi Province[2023-YBSF-442] ; National Natural Science Foundation of China[52106275] |
| 项目资助者 | YLU-DNL Fund ; Key R&D Program of ShaanXi Province ; National Natural Science Foundation of China |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/93617 |
| 专题 | 高温气体动力学国家重点实验室 |
| 通讯作者 | Che, Defu; Kang, Running |
| 作者单位 | 1.Xi An Jiao Tong Univ, Sch Energy & Power Engn, Xian, Peoples R China 2.Yulin Univ, Sch Energy Engn, Yulin, Peoples R China 3.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, Guangtao,Zhang, Zirui,Wang, Chang'an,et al. Influence of Rare-Earth Promoters (Ce, Zr and La) on Catalytic Performance of Copper-Based Catalyst in Toluene Oxidation[J]. COMBUSTION SCIENCE AND TECHNOLOGY,2023:19. |
| APA | Hu, Guangtao.,Zhang, Zirui.,Wang, Chang'an.,Li, Guojie.,Zhou, Dandan.,...&Kang, Running.(2023).Influence of Rare-Earth Promoters (Ce, Zr and La) on Catalytic Performance of Copper-Based Catalyst in Toluene Oxidation.COMBUSTION SCIENCE AND TECHNOLOGY,19. |
| MLA | Hu, Guangtao,et al."Influence of Rare-Earth Promoters (Ce, Zr and La) on Catalytic Performance of Copper-Based Catalyst in Toluene Oxidation".COMBUSTION SCIENCE AND TECHNOLOGY (2023):19. |
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