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Polyvinyl amine coated Fe3O4@SiO2 magnetic microspheres for Knoevenagel condensation
Basic magnetic catalyst Fe3O4 nanoparticle Polyvinyl amine Knoevenagel condensation
2014/3/11
Polyvinyl amine coated Fe3O4@SiO2 composite microspheres with a core-shell structure were prepared and employed as a magnetic catalyst for Knoevenagel condensation under mild conditions. The catalyst ...
Synthesis of polyhydroquinoline derivatives via a four-component Hantzsch condensation catalyzed by tin dioxide nanoparticles（图）
Nano tin dioxide catalyst Hantzsch condensation Polyhydroquinoline 1,4-Dihydropyridine
2013/9/27
Tin dioxide (SnO2) nanoparticles efficiently catalyzed unsymmetrical four-component Hantzsch condensations of various aldehydes, dimedone, ethyl acetoacetate, and ammonium acetate to form polyhydroqui...
Solvent-Free Selective Cross-Aldol Condensation of Ketones with Aromatic Aldehydes Efficiently Catalyzed by a Reusable Supported Acidic Ionic Liquid（图）
cross-aldol condensation solvent-free condition supported acidic ionic liquid ketone aromatic aldehyde
2013/10/4
A newly prepared catalyst consisting of acidic ionic liquid 1-(4-sulfonic acid)butylpyridinium hydrogen sulfate supported on silica was used to catalyze the cross-aldol condensation of ketones with ar...
Nano-Fe3O4 Encapsulated-Silica Particles Bearing Sulfonic Acid Groups as a Magnetically Separable Catalyst for Highly Efficient Knoevenagel Condensation and Michael Addition Reactions（图）
magnetic nanoparticle silica Knoevenagel condensation Michael addition cyclic diketone
2013/10/4
Sulfonic acid-functionalized silica-coated nano-Fe3O4 particles (Fe3O4@SiO2-SO3H) have been prepared as a novel heterogeneous acid using a facile process. The material was subsequently identified as a...
Production of Ag Nanopowders by Inert Gas Condensation and Evaluation of Their Properties
Ag Nanoparticles Inert gas condensation method Particle structure Electrical conductivity
2009/10/13
In this study, silver nanopowders were produced by inert gas condensation (IGC) in a reduced helium atmosphere. Helium gas was used as both cooling agent and carrier gas for the nucleating metal parti...