中国科学院大连化学物理研究所机构知识库
Advanced  
DICP OpenIR  > 中国科学院大连化学物理研究所  > 会议论文
学科主题: 物理化学
题名: Homogeneous Chiral Catalysis in Heterogeneous Nanoreactors
作者: Li C(李灿)
会议文集: Book of Abstracts XV. International Symposium on Relations between Homogeneous
会议名称: XV. International Symposium on Relations between Homogeneous
会议日期: 2011-9-11
出版日期: 2011
会议地点: Berlin
通讯作者: 李灿
出版者: 待补充
出版地: 待补充
合作性质: 特邀报告
部门归属: 503
主办者: Fritz-Haber-Institut der Max-Planck-Gesellschaft
摘要: The heterogeneous asymmetric catalysis is becoming a fascinating area for both the academic research and the commercial applications. However, the low activity and enantioselectivity of most chiral solids impedes the practical applications of heterogeneous asymmetric catalysis. The transformation of homogeneous asymmetric catalysts into heterogeneous ones would benefit the economic and green process for the production of chiral chemicals. The chiral solid catalysts prepared by immobilization method usually exhibits low efficiency due to the inhomogeneous distribution of the active species and altered microenvironment of the homogeneous asymmetric catalysts. Therefore, new strategies are desired to be developed for the preparation of high‐\performance chiral solids for heterogeneous asymmetric catalysis. In recent years, we investigated the asymmetric catalysis in the nanopore of mesoporous materials and observed the pore confinement effect which could be used to increase the enantioselectivity (ee%) of the solid chiral catalysts [1]. The novel chiral porous materials, the chiral periodic mesoporous organosilicas (chiral PMOs), were synthesized and the relation between the porous structure and the catalytic performance of the chiral PMOs was elucidated [2]. Moreover, we developed an efficient strategy for encapsulation of transition metal complexes in the nanocage of mesoporous silicas [3]. The transition metal complexes encapsulated in the nanocages can move freely during the catalytic process because of no strong interactions between the catalysts and the solid supports. This strategy could be employed for the preparation of chiral solid catalysts with high activity and enantioselectivity owing to the cooperative activation effect. More recently, we extended the asymmetric catalysis to the nanochannels of CNT [4]. Pt nanocatalyst encapsulated inside CNTs modified by CD was found to be more active and enantioselective than Pt nanocatalyst on the outer surface of CNTs for the asymmetric hydrogenation of α‐\ketoesters, which shows the unique effect of nano‐\channels of CNTs as nanoreactors for asymmetric catalysis. The asymmetric catalysis in the nanoreactor opens an opportunity for developing novel, highly active and enantioselective heterogeneous chiral catalysts.
英文摘要: The heterogeneous asymmetric catalysis is becoming a fascinating area for both the academic research and the commercial applications. However, the low activity and enantioselectivity of most chiral solids impedes the practical applications of heterogeneous asymmetric catalysis. The transformation of homogeneous asymmetric catalysts into heterogeneous ones would benefit the economic and green process for the production of chiral chemicals. The chiral solid catalysts prepared by immobilization method usually exhibits low efficiency due to the inhomogeneous distribution of the active species and altered microenvironment of the homogeneous asymmetric catalysts. Therefore, new strategies are desired to be developed for the preparation of high‐\performance chiral solids for heterogeneous asymmetric catalysis. In recent years, we investigated the asymmetric catalysis in the nanopore of mesoporous materials and observed the pore confinement effect which could be used to increase the enantioselectivity (ee%) of the solid chiral catalysts [1]. The novel chiral porous materials, the chiral periodic mesoporous organosilicas (chiral PMOs), were synthesized and the relation between the porous structure and the catalytic performance of the chiral PMOs was elucidated [2]. Moreover, we developed an efficient strategy for encapsulation of transition metal complexes in the nanocage of mesoporous silicas [3]. The transition metal complexes encapsulated in the nanocages can move freely during the catalytic process because of no strong interactions between the catalysts and the solid supports. This strategy could be employed for the preparation of chiral solid catalysts with high activity and enantioselectivity owing to the cooperative activation effect. More recently, we extended the asymmetric catalysis to the nanochannels of CNT [4]. Pt nanocatalyst encapsulated inside CNTs modified by CD was found to be more active and enantioselective than Pt nanocatalyst on the outer surface of CNTs for the asymmetric hydrogenation of α‐\ketoesters, which shows the unique effect of nano‐\channels of CNTs as nanoreactors for asymmetric catalysis. The asymmetric catalysis in the nanoreactor opens an opportunity for developing novel, highly active and enantioselective heterogeneous chiral catalysts.
内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/116092
Appears in Collections:中国科学院大连化学物理研究所_会议论文

Files in This Item:

There are no files associated with this item.


Recommended Citation:
Li C. Homogeneous Chiral Catalysis in Heterogeneous Nanoreactors[C]. 见:XV. International Symposium on Relations between Homogeneous. Berlin. 2011-9-11.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [李灿]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [李灿]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Powered by CSpace