催化学报 ›› 2016, Vol. 37 ›› Issue (8): 1263-1274.DOI: 10.1016/S1872-2067(16)62451-8

• 论文 • 上一篇    下一篇

胺功能化的拟薄水铝石纳米颗粒负载的Mn-V复合物:高效的烯烃环氧化催化剂

Mahdi Mirzaee, Bahram Bahramian, MariehMirebrahimi   

  1. 沙赫鲁德科技大学化学系, 沙赫鲁德, 伊朗
  • 收稿日期:2016-03-26 修回日期:2016-04-30 出版日期:2016-07-29 发布日期:2016-08-01
  • 通讯作者: Mahdi Mirzaee

Amine-functionalized boehmite nanoparticle-supported molybdenum and vanadium complexes: Efficient catalysts for epoxidation of alkenes

Mahdi Mirzaee, Bahram Bahramian, Marieh Mirebrahimi   

  1. Department of Chemistry, Shahrood University of Technology, Shahrood, Iran
  • Received:2016-03-26 Revised:2016-04-30 Online:2016-07-29 Published:2016-08-01
  • Contact: Mahdi Mirzaee

摘要:

将具有高比表面积和表面高度羟基化的拟薄水铝石纳米颗粒与3-(3甲氧基硅烷)-正丙胺进行共价结合而官能团化,再用于负载硫酸氧钒和六羰基钼络合物。所得样品采用红外光谱、粉末X射线衍射、热重-差热分析、X射线光电子能谱、元素分析、电感耦合等离子体和透射电镜等技术进行了表征,并用于顺-环辛烯的环氧化反应中,优化了诸如溶剂和氧化剂等反应条件.反应过程采用气-液色谱进行监测.重复使用实验表明,该纳米催化剂可重复使用多次,并保持顺-环辛烯接近完全环氧化.所得到的优化反应条件也成功用于其它的取代烯烃的环氧化反应中.

关键词: 拟薄水铝石纳米颗粒, 多相催化剂, 六羰基钼, 硫酸氧钒, 环氧化

Abstract:

Boehmite nanoparticles with a high surface area and a high degree of surface hydroxyl groups were covalently functionalized by 3-(trimethoxysilyl)-propylamine to support vanadium-oxo-sulfate and molybdenum hexacarbonyl complexes. These supported catalysts were then characterized by Fourier-transform infrared spectroscopy, powder X-ray diffraction, thermogravimetry and differential thermal analysis, X-ray-photoelectron spectroscopy, elemental analysis, inductively coupled plasma, and transmission electron microscopy techniques. The catalysts were subsequently used for the epoxidation of cis-cyclooctene, and the experimental procedures were optimized. The progress of the reactions was investigated by gas-liquid chromatography. Recycling experiments revealed that these nanocatalysts could be repeatedly used several times for a nearly complete epoxidation of cis-cyclooctene. The optimized experimental conditions were also used successfully for the epoxidation of some other substituted alkenes.

Key words: Boehmite nanoparticles, Heterogeneous catalysts, Hexa-carbonyl molybdenum, Oxo-sulfate vanadium, Epoxidation