Introducing hydroxyl groups as cellulose-binding sites into polymeric solid acids to improve their catalytic performance in hydrolyzing cellulose

Porous polymeric solid acids bearing hydroxyl and sulfonic acid groups, synthesized from aromatic monomers via the Friedel-Crafts “knitting” polymerization, could efficiently hydrolyze cellulose. • Bifunctional porous were for hydrolyzing polymerization followed by sulfonation was used to synthesize acids. Hydroxyl groups as cellulose-binding sites enhanced catalytic performance of acid. structure (large surface area) is crucial activity Effective hydrolysis cellulose glucose a step produce fuels chemicals lignocellulosic biomass. Solid are promising alternatives cellulases homogenous In this study, fabricated in water through low-cost hydroxyl-containing sulfonation. The bifunctional effectively microcrystalline (Avicel) high 93 % at 120 °C within 48 h ball-milled Avicel 98 24 h. evidence study indicated that outstanding attributed presence (cellulose-binding group)