Furfural acetalization over Keggin heteropolyacid salts at room temperature: effect of cesium doping

  title={Furfural acetalization over Keggin heteropolyacid salts at room temperature: effect of cesium doping},
  author={M{\'a}rcio Jos{\'e} da Silva and Neide Paloma Gonçalves Lopes and Carlos Giovani Oliveira Bruziquesi},
  journal={Reaction Kinetics, Mechanisms and Catalysis},
  pages={913 - 931}
Furfural is a platform-molecule of biorefinery highly valuable due to numerous applications in different industries. Furfural acetals are fuel bioadditives, ingredients of fragrances, solvents, paints, and fine chemicals. The condensation of furfural with alcohols requires the presence of an acid catalyst, which should be desirably active, selective, and recyclable. In this work, Keggin heteropolyacids (i.e., HPAs) were converted to solid salts after the partial exchanges of their protons by… 
1 Citations
Efficient conversion of xylan and rice husk to furfural over immobilized imidazolium acidic ionic liquids
In the present work, three immobilized imidazolium acidic ionic liquid catalysts (ImmHSO4-IL, ImmCH3SO3-IL and ImmH2PO4-IL) were prepared with silica as carrier and modified with H2SO4, CH3SO3H and


Monoterpenes etherification reactions with alkyl alcohols over cesium partially exchanged Keggin heteropoly salts: effects of catalyst composition
In this work, cesium partially exchanged Keggin heteropolyacid (HPA) salts were prepared, characterized, and evaluated as solid catalysts in monoterpenes etherification reactions with alkyl alcohols.
Solvent free heteropolyacid-catalyzed glycerol ketalization at room temperature
Currently, glycerol has been produced in large amounts as a biodiesel co-product. Therefore, developing processes to convert it into more valuable chemicals has attracted significant attention.
Catalytic Conversion of Carbohydrates to Levulinate Ester over Heteropolyanion-Based Ionic Liquids.
High efficiency is ascribed to the reasonably high activity of the ionic liquid (IL) catalyst and reaction coupling with rapid in situ esterification of the generated levulinic acid with the alcohol promoter, which allows the insolubility of cellulose encountered in biomass conversion to be overcome.
Lacunar Keggin Heteropolyacid Salts: Soluble, Solid and Solid-Supported Catalysts
Abstract Polyoxometalates are an important class of environmentally friendly catalysts. The Keggin heteropolyacids containing tungsten or molybdenum addenda atoms have received great attention
Chemoselective Synthesis of Dithioacetals from Bio‐aldehydes with Zeolites under Ambient and Solvent‐free Conditions
Dithioacetals are an important class of versatile compounds extensively applied in pharmaceuticals, separations, electrochemistry, and organic synthesis, but few heterogeneous catalytic systems are