| abstract |
The invention relates to a method for preparing 2,5-dimethylfuran by catalytic hydrogenation of 5-hydroxymethyl furfural, that is, 5-hydroxymethyl furfural is selectively hydrogenated under the action of NiFe and reduced graphene oxide composite material catalyst The reaction generates 2,5-dimethylfuran. The NiFe/rGO catalyst does not need to undergo high temperature pre-reduction treatment before use, and the reaction is carried out under the conditions of 200 °C and 2MPa hydrogen pressure for 3 hours, the conversion rate of 5-hydroxymethylfurfural can reach 100%, and the yield of 2,5-dimethylfuran The rate and selectivity can reach 97%. The NiFe/rGO catalyst without reduction pretreatment has higher catalytic activity and selectivity than Ni/rGO, Fe/rGO catalysts, and NiFe/Al 2 O 3 , NiFe/HY, NiFe/SiO 2 catalysts, and is higher than that of Pt, Pd, etc. Precious metal catalysts are inexpensive and have industrial application value. |