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›› 2012, Vol. 12 ›› Issue (1): 136-141.

• 材料工程专栏 • 上一篇    下一篇

沉淀法制备氧化亚铜颗粒及其在(CH3)2SiCl2单体合成反应中应用

刘杰 王莹利 宋莲英 车红卫 张卫东 苏发兵   

  1. 北京化工大学化学工程学院 中国科学院过程工程研究所多相复杂系统国家重点实验室 中国科学院过程工程研究所多相复杂系统国家重点实验室 中国科学院过程工程研究所多相复杂系统国家重点实验室 北京化工大学化学工程学院 中国科学院过程工程研究所，多相复杂系统国家重点实验室
  • 收稿日期:2011-12-12 修回日期:2012-02-14 出版日期:2012-02-20 发布日期:2012-02-20
  • 通讯作者: 刘杰

Synthesis of Cu2O Microparticles by Precipitation Method and Its Application in (CH3)2SiCl2 Synthesis

LIU Jie WANG Ying-li SONG Lian-ying CHE Hong-wei ZHANG Wei-dong SU Fa-bing   

  1. Beijing Key Laboratory of Membrane Separation Processes and Technology, Beijing University of Chemical Technology State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences Beijing Key Laboratory of Membrane Separation Processes and Technology, Beijing University of Chemical Technology （1. State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences
  • Received:2011-12-12 Revised:2012-02-14 Online:2012-02-20 Published:2012-02-20
  • Contact: LIU Jie

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摘要： 通过调控沉淀法中样品老化时间制备了粒径0.10~0.15, 0.5~1和1~2 mm的球状Cu2O催化剂，研究了其粒径对直接合成(CH3)2SiCl2反应性能的影响. 结果表明，在所制粒径范围内，催化剂粒径对硅粉转化率影响不大，转化率约为12%；目的产物选择性随催化剂粒径增大而逐渐降低，3种粒径的Cu2O催化剂上(CH3)2SiCl2的选择性分别为86.48%, 80.65%和74.31%. 对反应前后触体的表征显示，硅粉表面以催化剂颗粒为中心发生了辐射状刻蚀反应，且随催化剂粒径增大，反应积碳量增加.

关键词: 直接合成反应, 二甲基二氯硅烷, 氧化亚铜, 积碳, 催化

Abstract: Spherical Cu2O particles with three size ranges of 0.10~0.15, 0.5~1 and 1~2 mm were synthesized by precipitation method. The particle samples were characterized. Their catalytic properties in (CH3)2SiCl2 synthesis via Rochow reaction were investigated. The results showed that the size of Cu2O microparticles as model catalyst has a substantial effect on the (CH3)2SiCl2 selectivity, but no obvious effect on the Si conversion rate (about 12%). The (CH3)2SiCl2 selectivity over Cu2O microparticles with the size ranges of 0.10~0.15, 0.5~1 and 1~2 mm were 86.48%, 80.65% and 74.31%, respectively. Surface morphology of Si and contact mass at different stages shows that the carbon deposition is related to the catalyst size. The smaller particles are more effective for (CH3)2SiCl2 synthesis.

Key words: direct synthesis, (CH3)2SiCl2, Cu2O, carbon deposition, catalysis

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