Carboxylic acids dendrimer functionalized magnetic nanoparticles for carbohydrates conversion to 5-hydroxymethylfurfural.

ABSTRACT: In present study, covalently bonded second generation of amine-terminated polyamidoamine dendrimer to silica coated magnetic nanoparticles (G2-PAMAM@SMNPs) was synthesized through step-by-step growth chemical grafting approach. Then, terminal amine groups of G2-PAMAM@SMNPs were carboxylated with bromoacetic acid to obtain a solid acid catalyst. Subsequent to the prepared weakly acidic catalyst characterization, its catalytic efficiency was evaluated for the conversion of fructose to 5-hydroxymethylfurfural (5-HMF). Reaction conditions for gaining an optimum yield of 5-HMF from fructose were assumed and an outstanding 5-HMF yield of 87% was afforded in dimethyl sulfoxide (DMSO)/H₂O (v/v: 2/1) media at 140 ºC within 3 h. Interestingly, the presence of amine groups with basicity ch

SUBMITTER: Delshad Y 

PROVIDER: S-EPMC11958825 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature