| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 50888 | Catalysis Communications | 2011 | 5 Pages |
A new type of acid-base bifunctional mesoporous catalyst is prepared by the modification of Al-MCM-41 surfaces with organic amine functional groups. The ratio of acidic and basic sites on the solid surface can be adjusted by varying the amount of 3-aminopropyl-triethoxysilane (APTES) in the reaction medium (toluene). The acid-base bifunctional catalysts show high catalytic activities and selectivities in one-pot deacetalization–Knoevenagel and deacetalization–nitroaldol (Henry) reactions. The cohabiting of acidic and basic sites in the materials acting in a cooperative way to catalyze nitroaldol (Henry) reaction is also demonstrated.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch Highlights► Acid-base bifunctional hexagonal mesoporous silica catalysts. ► Synthesized by simply grafting. ► Possess high activity for One-pot cascade reactions. ► An acid-base cooperative manner to catalyze nitroaldol reaction.
