{"title":"氧化锌促进剂在二甲基二氯硅烷合成的 Rochow-Müller 反应中 Cu2O 结构演变中的作用","authors":"","doi":"10.1016/j.apcata.2024.119941","DOIUrl":null,"url":null,"abstract":"<div><p>Zinc oxide (ZnO) is commonly used as a promoter in Cu-based catalysts for the Rochow-Müller reaction, which is used to produce organosilane monomers in the organosilicon industry. However, the impact of ZnO on the phase transformation of Cu-based catalysts during the Rochow-Müller reaction has not been fully revealed. In this work, we synthesized two ZnO-modified Cu<sub>2</sub>O model catalysts by simple ball milling (Cu<sub>2</sub>O-ZnO) and physical mixing (Cu<sub>2</sub>O+ZnO) methods. The addition of ZnO enhanced catalytic properties, resulting in higher dimethyldichlorosilane (M2) selectivity and Si conversion compared to using the pure Cu<sub>2</sub>O catalyst. The introduction of ZnO into Cu<sub>2</sub>O enhanced the adsorption of methyl chloride (MeCl) on the Cu<sub>2</sub>O surface, causing Cu<sub>2</sub>O to transform into Cu and CuCl. Subsequently, CuCl reacted with active Si to form active Cu<sub><em>x</em></sub>Si species. This work provides valuable insights into the roles of ZnO in Cu<sub>2</sub>O-based catalysts and sheds light on their catalytic mechanism in the Rochow-Müller reaction.</p></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":null,"pages":null},"PeriodicalIF":4.7000,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The role of the ZnO promoter in the structural evolution of Cu2O in the Rochow-Müller reaction for dimethyldichlorosilane synthesis\",\"authors\":\"\",\"doi\":\"10.1016/j.apcata.2024.119941\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Zinc oxide (ZnO) is commonly used as a promoter in Cu-based catalysts for the Rochow-Müller reaction, which is used to produce organosilane monomers in the organosilicon industry. However, the impact of ZnO on the phase transformation of Cu-based catalysts during the Rochow-Müller reaction has not been fully revealed. In this work, we synthesized two ZnO-modified Cu<sub>2</sub>O model catalysts by simple ball milling (Cu<sub>2</sub>O-ZnO) and physical mixing (Cu<sub>2</sub>O+ZnO) methods. The addition of ZnO enhanced catalytic properties, resulting in higher dimethyldichlorosilane (M2) selectivity and Si conversion compared to using the pure Cu<sub>2</sub>O catalyst. The introduction of ZnO into Cu<sub>2</sub>O enhanced the adsorption of methyl chloride (MeCl) on the Cu<sub>2</sub>O surface, causing Cu<sub>2</sub>O to transform into Cu and CuCl. Subsequently, CuCl reacted with active Si to form active Cu<sub><em>x</em></sub>Si species. This work provides valuable insights into the roles of ZnO in Cu<sub>2</sub>O-based catalysts and sheds light on their catalytic mechanism in the Rochow-Müller reaction.</p></div>\",\"PeriodicalId\":243,\"journal\":{\"name\":\"Applied Catalysis A: General\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.7000,\"publicationDate\":\"2024-09-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Catalysis A: General\",\"FirstCategoryId\":\"1\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0926860X24003867\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Catalysis A: General","FirstCategoryId":"1","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0926860X24003867","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
The role of the ZnO promoter in the structural evolution of Cu2O in the Rochow-Müller reaction for dimethyldichlorosilane synthesis
Zinc oxide (ZnO) is commonly used as a promoter in Cu-based catalysts for the Rochow-Müller reaction, which is used to produce organosilane monomers in the organosilicon industry. However, the impact of ZnO on the phase transformation of Cu-based catalysts during the Rochow-Müller reaction has not been fully revealed. In this work, we synthesized two ZnO-modified Cu2O model catalysts by simple ball milling (Cu2O-ZnO) and physical mixing (Cu2O+ZnO) methods. The addition of ZnO enhanced catalytic properties, resulting in higher dimethyldichlorosilane (M2) selectivity and Si conversion compared to using the pure Cu2O catalyst. The introduction of ZnO into Cu2O enhanced the adsorption of methyl chloride (MeCl) on the Cu2O surface, causing Cu2O to transform into Cu and CuCl. Subsequently, CuCl reacted with active Si to form active CuxSi species. This work provides valuable insights into the roles of ZnO in Cu2O-based catalysts and sheds light on their catalytic mechanism in the Rochow-Müller reaction.
期刊介绍:
Applied Catalysis A: General publishes original papers on all aspects of catalysis of basic and practical interest to chemical scientists in both industrial and academic fields, with an emphasis onnew understanding of catalysts and catalytic reactions, new catalytic materials, new techniques, and new processes, especially those that have potential practical implications.
Papers that report results of a thorough study or optimization of systems or processes that are well understood, widely studied, or minor variations of known ones are discouraged. Authors should include statements in a separate section "Justification for Publication" of how the manuscript fits the scope of the journal in the cover letter to the editors. Submissions without such justification will be rejected without review.