Facile synthesis of highly efficient and recyclable magnetic solid acid from biomass waste.
In this work, sawdust, a biomass waste, is converted into a magnetic porous carbonaceous (MPC) solid acid catalyst by an integrated fast pyrolysis-sulfonation process. The resultant magnetic solid acid has a porous structure with high surface area of 296.4 m(2) g(-1), which can be attributed to the catalytic effect of Fe. The catalytic activity and recyclability of the solid acid catalyst are evaluated during three typical acid-catalyzed reactions: esterification, dehydration, and hydrolysis. The favorable catalytic performance in all three reactions is attributed to the acid's high strength with 2.57 mmol g(-1) of total acid sites. Moreover, the solid acid can be reused five times without a noticeable decrease in catalytic activity, indicating the stability of the porous carbon (PC)-sulfonic acid group structure. The findings in the present work offer effective alternatives for environmentally friendly utilization of abundant biomass waste.
Department of Chemistry, University of Science and Technology of China, Hefei, China.
Wu-Jun
WJ
Liu
Ke
K
Tian
Hong
H
Jiang
Han-Qing
HQ
Yu
D000143:Acids / Q000138:chemical synthesis*; D000476:Alkanesulfonates / Q000737:chemistry; D017554:Carbon Compounds, Inorganic / Q000138:chemical synthesis*; D002384:Catalysis; D006361:Heating / Q000379:methods*; D007220:Industrial Waste / Q000517:prevention & control*; D059027:Recycling / Q000379:methods*; D012037:Refuse Disposal / Q000379:methods*; D014934:Wood / Q000737:chemistry*
D000143:Acids; D000476:Alkanesulfonates; D017554:Carbon Compounds, Inorganic; D007220:Industrial Waste