摘要
Efficient conversion of straw cellulose to chemicals or fuels is an attracting topic today for the utiliza-tion of biomass to substitute for fossil resources.The development of catalysts is of vital importance.In this work,a composite catalyst metal-organic frameworks(MOFs)immobilized on three-dimensional reduced graphene oxide(3D-rGO)were synthesized by in situ growth of the MIL-101(Cr)within the 3D-rGO matrix.The supporting of 3D-rGO guaranteed the dispersion and acid site density of MIL-101(Cr).The MIL-101(Cr)@3D-rGO nanocomposite possesses excellent catalytic activity,stability,recyclability and is an idea catalyst for the efficient degradation of straw cellulose into formic acid(FA),acetic acid(AA)and oxalic acid(OA).A maximum FA conversion rates of 95.36%was obtained by using MIL-101(Cr)@3D-rGO(1:1)as catalyst and hydrothermal reaction at mild conditions of 200°C for 1h in alkaline aqueous medium.The MIL-101(Cr)@3D-rGO nanocomposite can be reused with high catalytic activity without any collapse of structure or leaching of chromium.
基金
supported by the National Natural Science Foun-dation of China(Nos.U1906221 and 52070121)
supported by grants from the Major Program of Shandong Province Technological Innovation Project(No.2020CXGC011403).
作者简介
Corresponding authors:Xing Xu.E-mail addresses:xuxing@sdu.edu.cn(X.Xu);Corresponding authors:Qian Li.qianli@sdu.edu.cn(Q.Li).
