Topics in Catalysis

, Volume 53, Issue 3–4, pp 187–191

Urea and Thiourea-Functionalized Mesoporous Silica Nanoparticle Catalysts with Enhanced Catalytic Activity for Diels–Alder Reaction

  • Hung-Ting Chen
  • Brian G. Trewyn
  • Jerzy W. Wiench
  • Marek Pruski
  • Victor S.-Y. Lin
Original Paper

Abstract

A series of urea- and thiourea-functionalized mesoporous silica nanoparticles (MSN) was synthesized. These materials exhibited a superior catalytic reactivity for Diels–Alder reaction than their homogeneous analogues. The reactivity enhancement was attributed to the site isolation effect induced by the heterogenization of individual catalytic group. The surface hydrogen bonding between the organic catalysts and silanols also improved the catalytic reactivity.

Keywords

Thiourea Mesoporous silica nanoparticle Heterogeneous catalysis Surface hydrogen bonding Diels–Alder reaction 

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Hung-Ting Chen
    • 1
    • 2
  • Brian G. Trewyn
    • 1
  • Jerzy W. Wiench
    • 2
  • Marek Pruski
    • 1
    • 2
  • Victor S.-Y. Lin
    • 1
    • 2
  1. 1.Department of ChemistryIowa State UniversityAmesUSA
  2. 2.U.S. Department of Energy Ames LaboratoryIowa State UniversityAmesUSA

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