{"title":"琼脂法合成FeMnOx催化剂对甲苯氧化性能的增强：协同效应及降解机理","authors":"Hongpan Liu, Huixin Yu, Dandan Fu, Zhongxian Song, Wei Wu, Dazhi Li, Haiyang Li, Yang He, Jinhui Zhang, Xuejun Zhang","doi":"10.1002/aoc.70183","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>Herein, FeMnO<sub><i>x</i></sub> composite catalysts were synthesized using the agar method, aiming to enhance the catalytic performance for toluene oxidation. Compared to traditional preparation methods, the agar-gel technique leveraged the unique templating effect of biopolymer gels, which promoted the uniform dispersion and crystallization of the Fe-O-Mn structure, leading to the formation of abundant oxygen vacancies and surface defect sites. Results indicated that the catalytic performance of FeMnO<sub><i>x</i></sub> (<i>T</i><sub>90</sub> = 225°C) was significantly superior to that of single-metal oxides, attributed to the enhanced Mn<sup>3+</sup> content, O<sub>ads</sub>, and oxygen mobility induced by the Fe-Mn synergistic effect. Systematic characterization confirmed that the strong interaction between Fe and Mn in FeMnO<sub><i>x</i></sub> reduced the Mn-O bond strength and optimized the adsorption and activation capabilities of oxygen species. In situ DRIFTS analysis further revealed the unique reaction pathway of FeMnO<sub><i>x</i></sub>: benzoic acid could be directly converted to maleic anhydride, circumventing the formation of phenol intermediates, thereby reducing the accumulation of by-products and accelerating the deep oxidation of toluene to CO<sub>2</sub> and H<sub>2</sub>O. This research presented a novel strategy for the green synthesis of efficient Fe-Mn catalysts and provided an innovative approach to the catalytic degradation of toluene.</p>\n </div>","PeriodicalId":8344,"journal":{"name":"Applied Organometallic Chemistry","volume":"39 6","pages":""},"PeriodicalIF":3.7000,"publicationDate":"2025-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhanced Catalytic Performance of FeMnOx Catalysts Synthesized via Agar Method for Toluene Oxidation: Synergistic Effects and Degradation Mechanism\",\"authors\":\"Hongpan Liu, Huixin Yu, Dandan Fu, Zhongxian Song, Wei Wu, Dazhi Li, Haiyang Li, Yang He, Jinhui Zhang, Xuejun Zhang\",\"doi\":\"10.1002/aoc.70183\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n <p>Herein, FeMnO<sub><i>x</i></sub> composite catalysts were synthesized using the agar method, aiming to enhance the catalytic performance for toluene oxidation. Compared to traditional preparation methods, the agar-gel technique leveraged the unique templating effect of biopolymer gels, which promoted the uniform dispersion and crystallization of the Fe-O-Mn structure, leading to the formation of abundant oxygen vacancies and surface defect sites. Results indicated that the catalytic performance of FeMnO<sub><i>x</i></sub> (<i>T</i><sub>90</sub> = 225°C) was significantly superior to that of single-metal oxides, attributed to the enhanced Mn<sup>3+</sup> content, O<sub>ads</sub>, and oxygen mobility induced by the Fe-Mn synergistic effect. Systematic characterization confirmed that the strong interaction between Fe and Mn in FeMnO<sub><i>x</i></sub> reduced the Mn-O bond strength and optimized the adsorption and activation capabilities of oxygen species. In situ DRIFTS analysis further revealed the unique reaction pathway of FeMnO<sub><i>x</i></sub>: benzoic acid could be directly converted to maleic anhydride, circumventing the formation of phenol intermediates, thereby reducing the accumulation of by-products and accelerating the deep oxidation of toluene to CO<sub>2</sub> and H<sub>2</sub>O. This research presented a novel strategy for the green synthesis of efficient Fe-Mn catalysts and provided an innovative approach to the catalytic degradation of toluene.</p>\\n </div>\",\"PeriodicalId\":8344,\"journal\":{\"name\":\"Applied Organometallic Chemistry\",\"volume\":\"39 6\",\"pages\":\"\"},\"PeriodicalIF\":3.7000,\"publicationDate\":\"2025-05-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Organometallic Chemistry\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/aoc.70183\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, APPLIED\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Organometallic Chemistry","FirstCategoryId":"92","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/aoc.70183","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
Enhanced Catalytic Performance of FeMnOx Catalysts Synthesized via Agar Method for Toluene Oxidation: Synergistic Effects and Degradation Mechanism
Herein, FeMnOx composite catalysts were synthesized using the agar method, aiming to enhance the catalytic performance for toluene oxidation. Compared to traditional preparation methods, the agar-gel technique leveraged the unique templating effect of biopolymer gels, which promoted the uniform dispersion and crystallization of the Fe-O-Mn structure, leading to the formation of abundant oxygen vacancies and surface defect sites. Results indicated that the catalytic performance of FeMnOx (T90 = 225°C) was significantly superior to that of single-metal oxides, attributed to the enhanced Mn3+ content, Oads, and oxygen mobility induced by the Fe-Mn synergistic effect. Systematic characterization confirmed that the strong interaction between Fe and Mn in FeMnOx reduced the Mn-O bond strength and optimized the adsorption and activation capabilities of oxygen species. In situ DRIFTS analysis further revealed the unique reaction pathway of FeMnOx: benzoic acid could be directly converted to maleic anhydride, circumventing the formation of phenol intermediates, thereby reducing the accumulation of by-products and accelerating the deep oxidation of toluene to CO2 and H2O. This research presented a novel strategy for the green synthesis of efficient Fe-Mn catalysts and provided an innovative approach to the catalytic degradation of toluene.
期刊介绍：
All new compounds should be satisfactorily identified and proof of their structure given according to generally accepted standards. Structural reports, such as papers exclusively dealing with synthesis and characterization, analytical techniques, or X-ray diffraction studies of metal-organic or organometallic compounds will not be considered. The editors reserve the right to refuse without peer review any manuscript that does not comply with the aims and scope of the journal. Applied Organometallic Chemistry publishes Full Papers, Reviews, Mini Reviews and Communications of scientific research in all areas of organometallic and metal-organic chemistry involving main group metals, transition metals, lanthanides and actinides. All contributions should contain an explicit application of novel compounds, for instance in materials science, nano science, catalysis, chemical vapour deposition, metal-mediated organic synthesis, polymers, bio-organometallics, metallo-therapy, metallo-diagnostics and medicine. Reviews of books covering aspects of the fields of focus are also published.
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