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Yang J, Li J, Kang J, Liu W, Kuang Y, Tan H, Yu Z, Yang L, Yang X, Yu K, Fan Y. Preparation of Ce-MnO x Composite Oxides via Coprecipitation and Their Catalytic Performance for CO Oxidation. Nanomaterials (Basel) 2023; 13:2158. [PMID: 37570476 PMCID: PMC10421365 DOI: 10.3390/nano13152158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 07/17/2023] [Accepted: 07/20/2023] [Indexed: 08/13/2023]
Abstract
Ce-MnOx composite oxide catalysts with different proportions were prepared using the coprecipitation method, and the CO-removal ability of the catalysts with the tested temperature range of 60-140 °C was investigated systematically. The effect of Ce and Mn ratios on the catalytic oxidation performance of CO was investigated using X-ray diffraction (XRD), X-ray energy dispersive spectroscopy (EDS), scanning electron microscopy (SEM), H2 temperature programmed reduction (H2-TPR), CO-temperature programmed desorption (CO-TPD), and in situ infrared spectra. The experimental results reveal that under the same test conditions, the CO conversion rate of pure Mn3O4 reaches 95.4% at 170 °C. Additionally, at 140 °C, the Ce-MnOx series composite oxide catalyst converts CO at a rate of over 96%, outperforming single-phase Mn3O4 in terms of catalytic performance. With the decrement in Ce content, the performance of Ce-MnOx series composite oxide catalysts first increase and then decrease. The Ce MnOx catalyst behaves best when Ce:Mn = 1:1, with a CO conversion rate of 99.96% at 140 °C and 91.98% at 100 °C.
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Affiliation(s)
- Junsheng Yang
- College of Mechanical Engineering, Wuhan Polytechnic University, Wuhan 430048, China; (J.Y.); (J.L.); (W.L.); (Y.K.); (Z.Y.); (L.Y.); (X.Y.)
| | - Jie Li
- College of Mechanical Engineering, Wuhan Polytechnic University, Wuhan 430048, China; (J.Y.); (J.L.); (W.L.); (Y.K.); (Z.Y.); (L.Y.); (X.Y.)
| | - Jiangang Kang
- Zhongye Changtian International Engineering Co., Ltd., Changsha 410205, China;
| | - Wenkang Liu
- College of Mechanical Engineering, Wuhan Polytechnic University, Wuhan 430048, China; (J.Y.); (J.L.); (W.L.); (Y.K.); (Z.Y.); (L.Y.); (X.Y.)
| | - Yijian Kuang
- College of Mechanical Engineering, Wuhan Polytechnic University, Wuhan 430048, China; (J.Y.); (J.L.); (W.L.); (Y.K.); (Z.Y.); (L.Y.); (X.Y.)
| | - Hua Tan
- State Key Laboratory of Material Processing and Die & Mould Technology, Wuhan 430074, China;
- School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Zhensen Yu
- College of Mechanical Engineering, Wuhan Polytechnic University, Wuhan 430048, China; (J.Y.); (J.L.); (W.L.); (Y.K.); (Z.Y.); (L.Y.); (X.Y.)
| | - Liu Yang
- College of Mechanical Engineering, Wuhan Polytechnic University, Wuhan 430048, China; (J.Y.); (J.L.); (W.L.); (Y.K.); (Z.Y.); (L.Y.); (X.Y.)
| | - Xuejin Yang
- College of Mechanical Engineering, Wuhan Polytechnic University, Wuhan 430048, China; (J.Y.); (J.L.); (W.L.); (Y.K.); (Z.Y.); (L.Y.); (X.Y.)
| | - Kui Yu
- College of Mechanical Engineering, Wuhan Polytechnic University, Wuhan 430048, China; (J.Y.); (J.L.); (W.L.); (Y.K.); (Z.Y.); (L.Y.); (X.Y.)
| | - Yiquan Fan
- College of Mechanical Engineering, Wuhan Polytechnic University, Wuhan 430048, China; (J.Y.); (J.L.); (W.L.); (Y.K.); (Z.Y.); (L.Y.); (X.Y.)
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