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Diffusion-controlled synthesis of Cu-based for the Rochow reaction
Liu, Hezhi1,2; Li, Jing2; Ji, Yongjun2; Zhang, Zailei2; Wang, Xueguang1; Zhong, Ziyi3; Su, Fabing2,4

The properties of materials are strongly dependent on their structures. The diffusion effect is a main kinetic factor that can be used to regulate the growth and structure of materials. In this work, we developed a systematic and feasible strategy to synthesize Cu2O solid spheres and hexahedrons by controlling the diffusion coefficients. These Cu2O products can be successively transformed into corresponding Cu hollow spheres and hexahedrons as well as CuO porous spheres and hexahedrons by controlling hydrogen diffusion in hydrazine hydrate solution and controlling oxygen diffusion in air, respectively. The formation of these transformations was also discussed in detail. Tested for Rochow reaction, the as-prepared Cu2O solid and CuO porous spheres exhibit higher dimethyldichlorosilane selectivity and Si conversion than Cu hollow spheres, which is attributed to the active sites for CH3Cl adsorption formed in CuxSi phase after the removal of oxygen atoms in Cu2O and CuO in the formation of dimethylchlorosilane. The present work not only develops a feasible method for preparing well shape-defined Cu2O solid spheres and hexahedrons but also clarifies the respective roles of Cu, Cu2O and CuO in dimethyldichlorosilane synthesis via Rochow reaction.

KeywordCuprous Oxide Hollow Spheres Porous Spheres Surface Oxygen Vacancies Rochow Reaction
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
WOS KeywordOxygen Vacancies ; Photocatalytic Performance ; Reaction Catalysts ; Coefficients ; Surface ; Nanocrystals ; Water ; Microparticles ; Microspheres ; Nanospheres
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
Funding OrganizationNational Natural Science Foundation of China(21506224)
WOS IDWOS:000423323000007
Citation statistics
Document Type期刊论文
Affiliation1.Shanghai Univ, Sch Mat Sci & Engn, State Key Lab Adv Special Steel, Shanghai 200072, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
3.ASTAR, Inst Chem & Engn Sci, Singapore 627833, Singapore
4.Shenyang Univ Chem Technol, Inst Ind Chem & Energy Technol, Shenyang 110142, Liaoning, Peoples R China
Recommended Citation
GB/T 7714
Liu, Hezhi,Li, Jing,Ji, Yongjun,et al. Diffusion-controlled synthesis of Cu-based for the Rochow reaction[J]. SCIENCE CHINA-MATERIALS,2017,60(12):1215-1226.
APA Liu, Hezhi.,Li, Jing.,Ji, Yongjun.,Zhang, Zailei.,Wang, Xueguang.,...&Su, Fabing.(2017).Diffusion-controlled synthesis of Cu-based for the Rochow reaction.SCIENCE CHINA-MATERIALS,60(12),1215-1226.
MLA Liu, Hezhi,et al."Diffusion-controlled synthesis of Cu-based for the Rochow reaction".SCIENCE CHINA-MATERIALS 60.12(2017):1215-1226.
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