Ceramic Membrane Immobilized Salen Catalysts and Their Use in Asymmetric Catalytic Reactions
- DOI
- 10.2991/cmfe-15.2015.9How to use a DOI?
- Keywords
- salen-Mn catalyst; immobilization; membrane reactor; epoxidation; Hydrolytic kinetic resolution
- Abstract
Three kinds of salen catalysts, mono-chloromethyl-salen-Mn, tetra-tert-butyl-salen-Mn and mono-chloromethyl-slaen-Co, were synthesized and then immobilized onto ceramic membranes by two steps. First, 3-aminopropyltriethoxysilane (APTES) was grafted on ceramic membranes in order to introduce amino groups onto the membranes. Second, catalysts were immobilized onto the membranes through chemical bonding of active groups of the catalysts and amino groups on the membranes. And three membrane reactors corresponding to the three catalysts were constructed. The catalytic performances of the reactors were investigated by catalyzing the epoxidation of indene and hydrolytic kinetic resolution (HKR) of racemic epichlorohydrin. The conversion rates (Conv.) and ee values of mono-chloromethyl-salen-Mn and tetra-tert-butyl-salen-Mn membrane reactors were 31.1%/28.9% (Conv.) and 76.1%/74.3% (ee) respectively in catalyzing epoxidation of indene. The Conv. and ee values of mono-chloromethyl-salen-Co membrane reactor were 39.4% and 24.5% respectively in catalyzing HKR reaction of epichlorohydrin. The salen membrane reactors showed comparable or even higher catalytic efficiency with the corresponding homogeneous catalysts. And all the reactors can reuse the catalysts directly without separation stage.
- Copyright
- © 2015, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Min Liu AU - Zhi-Ping Zhao AU - Jian-Hui Li PY - 2015/07 DA - 2015/07 TI - Ceramic Membrane Immobilized Salen Catalysts and Their Use in Asymmetric Catalytic Reactions BT - Proceedings of the International Conference on Chemical, Material and Food Engineering PB - Atlantis Press SP - 35 EP - 38 SN - 2352-5401 UR - https://doi.org/10.2991/cmfe-15.2015.9 DO - 10.2991/cmfe-15.2015.9 ID - Liu2015/07 ER -