Scale-Up of production of 5-hydroxymethylfurfural-rich adhesive precursors and structural features of humin side products

Abstract A batch reaction system (volume 1 L) for scaled-up production of 5-HMF-based adhesive precursor solutions from industrially available fructose syrup was developed. The stabilizing effect sodium dithionite addition demonstrated. With this system, no concentration steps are needed in the precursors wood composite board production. optimized a design experiment approach to achieve good conditions and produce with 5-HMF concentrations appropriate synthesis. Only three runs adjusted required enough synthesis 10 kg adhesive, thereby enabling testing systems particle trials. Furthermore, structure humin side products different stages, formed byproducts by condensation, aldol-like reactions attack on furan ring systems, investigated. data were compared information literature possible elements structures proposed.