Synergetic Effect of Brønsted/Lewis Acid Sites and Water on the Catalytic Dehydration of Glucose to 5‐Hydroxymethylfurfural by Heteropolyacid‐Based Ionic Hybrids
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DOI: 10.1002/open.201800138
Abstract: Abstract The effective dehydration of glucose to 5‐hydroxymethylfurfural (HMF) has attracted increasing attention. Herein, a series of sulfonic‐acid‐functionalized ionic liquid (IL)–heteropolyacid (HPA) hybrid catalysts are proposed for the conversion of glucose to HMF. A maximum… read more here.
Keywords: lewis acid; nsted lewis; water; dehydration glucose ... See more keywords
Molecular design and experimental study of cellulose conversion to 5-hydroxymethylfurfural catalyzed by different ratios of Brønsted/Lewis acid ionic liquids.
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DOI: 10.1016/j.carbpol.2021.118936
Abstract: Cellulose conversion into 5-hydroxymethylfurfural (5-HMF) is difficult because of the strong hydrogen bonding existed in cellulose chains. Brønsted/Lewis (B/L) biacidic functionalized ionic liquids (ILs) have great advantages in acid-catalyzed tandem reactions, but the catalytic effect… read more here.
Keywords: nsted lewis; ionic liquids; conversion hydroxymethylfurfural; cellulose conversion ... See more keywords
Brønsted–Lewis dual acidic ionic liquid immobilized on mesoporous silica materials as an efficient cooperative catalyst for Mannich reactions
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DOI: 10.1039/c7nj02541f
Abstract: Novel mesoporous silica supported ILs have been prepared and successfully applied as a heterogeneous catalyst in Mannich reactions. The excellent recyclability of the supported catalyst, mild reaction conditions, good to excellent yields, low catalyst loading,… read more here.
Keywords: nsted lewis; mesoporous silica; catalyst mannich; mannich reactions ... See more keywords
Synthesis and Properties of Magnetic Aryl-Imidazolium Ionic Liquids with Dual Brønsted/Lewis Acidity
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DOI: 10.3390/ma11122539
Abstract: A series of unique tunable aryl-imidazolium magnetic ionic liquids (MILs) with dual acidity that contain both Brønsted and Lewis acidic sites (abbreviated as B-L MILs) were synthesized and characterized using nuclear magnetic resonance and mass… read more here.
Keywords: nsted lewis; acidity; aryl imidazolium; ionic liquids ... See more keywords