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Catalyzing a cycloaddition with molecularly imprinted polymers obtained via immobilized templates

Visnjevski, A; Yilmaz, Ecevit LU and Bruggemann, O (2004) In Applied Catalysis A: General 260(2). p.169-174
Abstract
Polymeric catalysts to be applied in the Diels-Alder cycloaddition of hexachlorocyclopentadiene and maleic acid have been prepared via molecular imprinting with template molecules immobilized on silica particles. These enzyme mimicking polymers exhibit specific catalytic effects compared to non-imprinted control polymers or polymer-free solutions. It could be demonstrated that the activity of the molecularly imprinted material rises when increasing the temperature. By this means, the reduction of the activation energy (as expected for catalysts) from 63 to 55 kJ mol(-1) could be observed. Furthermore, the reaction was characterized based on the Michaelis-Menten model. For the diene compound a Michaelis constant of K-M = 5.8 mmol l(-1) and... (More)
Polymeric catalysts to be applied in the Diels-Alder cycloaddition of hexachlorocyclopentadiene and maleic acid have been prepared via molecular imprinting with template molecules immobilized on silica particles. These enzyme mimicking polymers exhibit specific catalytic effects compared to non-imprinted control polymers or polymer-free solutions. It could be demonstrated that the activity of the molecularly imprinted material rises when increasing the temperature. By this means, the reduction of the activation energy (as expected for catalysts) from 63 to 55 kJ mol(-1) could be observed. Furthermore, the reaction was characterized based on the Michaelis-Menten model. For the diene compound a Michaelis constant of K-M = 5.8 mmol l(-1) and an effective reaction rate of r(max,eff) = 0.41 mumol l(-1) s(-1), leading to a reaction rate constant k(eff) = 1.1 x 10(-3) s(-1), were determined. (C) 2003 Elsevier B.V. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
reaction, cycloaddition, catalysis, molecular imprinting, polymers, engineering, immobilized templates
in
Applied Catalysis A: General
volume
260
issue
2
pages
169 - 174
publisher
Elsevier
external identifiers
  • wos:000220956400004
  • scopus:1842509708
ISSN
0926-860X
DOI
10.1016/j.apcata.2003.10.015
language
English
LU publication?
yes
id
fe848330-7472-4498-894f-735cee883a1a (old id 281073)
date added to LUP
2007-11-05 07:19:02
date last changed
2017-04-16 04:06:14
@article{fe848330-7472-4498-894f-735cee883a1a,
  abstract     = {Polymeric catalysts to be applied in the Diels-Alder cycloaddition of hexachlorocyclopentadiene and maleic acid have been prepared via molecular imprinting with template molecules immobilized on silica particles. These enzyme mimicking polymers exhibit specific catalytic effects compared to non-imprinted control polymers or polymer-free solutions. It could be demonstrated that the activity of the molecularly imprinted material rises when increasing the temperature. By this means, the reduction of the activation energy (as expected for catalysts) from 63 to 55 kJ mol(-1) could be observed. Furthermore, the reaction was characterized based on the Michaelis-Menten model. For the diene compound a Michaelis constant of K-M = 5.8 mmol l(-1) and an effective reaction rate of r(max,eff) = 0.41 mumol l(-1) s(-1), leading to a reaction rate constant k(eff) = 1.1 x 10(-3) s(-1), were determined. (C) 2003 Elsevier B.V. All rights reserved.},
  author       = {Visnjevski, A and Yilmaz, Ecevit and Bruggemann, O},
  issn         = {0926-860X},
  keyword      = {reaction,cycloaddition,catalysis,molecular imprinting,polymers,engineering,immobilized templates},
  language     = {eng},
  number       = {2},
  pages        = {169--174},
  publisher    = {Elsevier},
  series       = {Applied Catalysis A: General},
  title        = {Catalyzing a cycloaddition with molecularly imprinted polymers obtained via immobilized templates},
  url          = {http://dx.doi.org/10.1016/j.apcata.2003.10.015},
  volume       = {260},
  year         = {2004},
}