▎ 摘 要
NOVELTY - An in-situ generated composite catalytic material comprises porous three-dimensional reduced graphene oxide, and iron-based metal organic framework or amine-functionalized iron-based metal organic framework which is uniformly dispersed on the inner folds of porous three-dimensional reduced graphene oxide. The mass ratio of iron-based metal organic framework or amine-functionalized iron-based metal organic framework with respect to porous three-dimensional reduced graphene oxide is 1:1. The composite catalytic material has a microporous structure as a whole. USE - In-situ generated composite catalytic material is used for catalytic degradation of straw extract microcrystalline cellulose (claimed). ADVANTAGE - The in-situ generated composite catalytic material has improved stability, selectivity, catalytic performance and degradation effect with respect to alkaline solution of cellulose. The catalytic material can efficiently degrade cellulose into small-molecule acids under milder catalytic conditions with reduced generation of by-products. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) preparation of in-situ generated composite catalytic material, which involves (i) dispersing iron salt and organic ligand in an organic solvent, stirring to completely dissolve the solid to obtain a suspension, adding porous three-dimensional reduced graphene oxide to the suspension, ultrasonically processing to obtain a homogeneous mixed suspension, transferring the mixed suspension to a reaction kettle, reacting at 100-160 degrees C for 12-24 hours, cooling to room temperature, washing, filtering, and drying to obtain a catalytic material precursor, and (ii) activating the catalytic material precursor under vacuum at 140-160 degrees C for 6-10 hours, and pulverizing the obtained material; and (2) use of in-situ generated composite catalytic material for efficient catalytic degradation of straw extract microcrystalline cellulose by adding the composite catalytic material to the alkaline solution of cellulose at a mass-volume ratio of 0.1:8 and performing catalytic degradation at 50-200 degrees C, preferably 200 degrees C for 1 hour. The cellulose concentration in the alkaline solution of cellulose is 0.06 g/mL.