Knowledge Management System Of Institute of process engineering,CAS
| Use of the active-phase Cu3Si alloy as superior catalyst to direct synthesis of trichlorosilane via silicon hydrochlorination | |
| Su, Kai1,2; Luo, Jiachengjun3; Ji, Yongjun4; Jiang, Xingyu3; Li, Jing2; Zhang, Jianling2; Zhong, Ziyi5,6; Su, Fabing2,3 | |
| 2021-12-01 | |
| Source Publication | JOURNAL OF SOLID STATE CHEMISTRY
 |
| ISSN | 0022-4596 |
| Volume | 304Pages:10 |
| Abstract | Here we report the first synthesis of nearly pure-phase Cu3Si alloy that can be a highly efficient catalyst in the hydrochlorination of silicon reaction. This material was prepared by a high-temperature (1050 degrees C) calcination method in which copper and silicon powders were used as the reactants. The X-ray photoelectron spectroscopy (XPS) study revealed that the Cu and Si atoms in the Cu3Si alloy carried part of positive and negative charge, respectively. When employed as the catalyst in the silicon hydrochlorination to SiHCl3 (TCS) for the production of Si polycrystals for Solar cell, the sample Cu3Si exhibited excellent low-temperature catalytic performance: the Si conversion and TCS selectivity respectively achieved 41.1% and 96.1% at 250 degrees C. Notably, its TCS yield at 250 degrees C was 1.2 times higher than that of the industrial catalyst-free system at 350 degrees C. Detailed analysis of the reaction process showed that the positively charged Cu atoms and negatively charged Si atoms in Cu3Si alloy could cleave the H-Cl bond in the reactant HCl and make the combination of H and Cl atom with Si atoms easier. Meanwhile, the reaction between the remaining Cu atom and Si was accelerated, leading to the generation of more active Cu6.69Si and ultimately superior catalytic performance. This work deepens the fundamental understanding of the hydrochlorination of silicon reaction, and provides an avenue for the synthesis of Si-based alloy catalysts. |
| Keyword | Cu3Si Superior catalyst Alloy Cu6.69Si Trichlorosilane Silicon hydrochlorination |
| DOI | 10.1016/j.jssc.2021.122591 |
| Language | 英语 |
| WOS Keyword | ROCHOW REACTION ; ANODE MATERIAL ; PERFORMANCE ; CUO |
| Funding Project | National Natural Science Foundation of China[21878301] ; National Natural Science Foundation of China[21978299] ; National Natural Science Foundation of China[21908224] ; Outstanding Youth Cultivation Program of Beijing Technology and Business University[19008021144] ; Research Foundation for Advanced Talents of Beijing Technology and Business University[19008020159] |
| WOS Research Area | Chemistry |
| WOS Subject | Chemistry, Inorganic & Nuclear ; Chemistry, Physical |
| Funding Organization | National Natural Science Foundation of China ; Outstanding Youth Cultivation Program of Beijing Technology and Business University ; Research Foundation for Advanced Talents of Beijing Technology and Business University |
| WOS ID | WOS:000698156000041 |
| Publisher | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/50216 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Ji, Yongjun; Zhang, Jianling; Su, Fabing |
| Affiliation | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 3.Shenyang Univ Chem Technol, Inst Ind Chem & Energy Technol, Shenyang 110142, Peoples R China 4.Beijing Technol & Business Univ, Sch Light Ind, Beijing 100048, Peoples R China 5.Guangdong Technion Israel Inst Technol GTIIT, Dept Chem Engn, Shantou 515063, Peoples R China 6.Technion Israel Inst Technol IIT, IL-32000 Haifa, Israel |
| Recommended Citation GB/T 7714 | Su, Kai,Luo, Jiachengjun,Ji, Yongjun,et al. Use of the active-phase Cu3Si alloy as superior catalyst to direct synthesis of trichlorosilane via silicon hydrochlorination[J]. JOURNAL OF SOLID STATE CHEMISTRY,2021,304:10. |
| APA | Su, Kai.,Luo, Jiachengjun.,Ji, Yongjun.,Jiang, Xingyu.,Li, Jing.,...&Su, Fabing.(2021).Use of the active-phase Cu3Si alloy as superior catalyst to direct synthesis of trichlorosilane via silicon hydrochlorination.JOURNAL OF SOLID STATE CHEMISTRY,304,10. |
| MLA | Su, Kai,et al."Use of the active-phase Cu3Si alloy as superior catalyst to direct synthesis of trichlorosilane via silicon hydrochlorination".JOURNAL OF SOLID STATE CHEMISTRY 304(2021):10. |
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