Journal
TOPICS IN CATALYSIS
Volume 53, Issue 3-4, Pages 187-191Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s11244-009-9423-x
Keywords
Thiourea; Mesoporous silica nanoparticle; Heterogeneous catalysis; Surface hydrogen bonding; Diels-Alder reaction
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Funding
- U.S. Department of Energy, Office of Basic Energy Sciences [DE-AC02-07CH11358]
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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.
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