The design of Co-Mn composite oxides catalysts derived from MOF is significant for catalytic combustion of toluene.Here,a series of M-CoaMnfbOx,with enhanced catalytic properties compared with that of MCo_(3)O_(4),wer...The design of Co-Mn composite oxides catalysts derived from MOF is significant for catalytic combustion of toluene.Here,a series of M-CoaMnfbOx,with enhanced catalytic properties compared with that of MCo_(3)O_(4),were successfully prepared through pyrolysis of Mn-doped Co-MOF.The as-synthesized MCo1Mn1Ox(Co:Mn=1:1)exhibits an optimal catalytic activity with 90%toluene conversion reached at227℃,which benefits from the increase of Co^(3+),Oadsand the synergistic effect between Mn and Co.According to the analysis of the in situ diffuse reflectance infrared Fourier transform spectroscopy,toluene could be degraded easier on M-Co1Mn1Oxwith lower activation energy than M-Co_(3)O_(4).The main intermediate products are benzaldehyde,benzoic acid,anhydride,and maleate species.Those findings reveal the value of Mn doping for improved activity of toluene oxidation on MOF derived Co_(3)O_(4),which provide a feasible method for the construction of toluene-oxidation catalysts.展开更多
基金financial support of National Natural Science Foundation of China(Nos.22078215,21671147)Natural Science Foundation of Shanxi Province(No.201901D211117)+4 种基金Coal Bed Methane Joint Foundation of Shanxi(No.2016012004)Science and Technology Innovation Project of Higher Education Department of Shanxi Province(No.2020L0632)Young Academic Leaders Funding Program of Taiyuan Institute of Technology(No.2020×S03)the Shanxi Province Natural Science Foundation for Youths(202103021223347)the Taiyuan Institute of Technology Scientific Research Initial Funding(2022KJ010)。
文摘The design of Co-Mn composite oxides catalysts derived from MOF is significant for catalytic combustion of toluene.Here,a series of M-CoaMnfbOx,with enhanced catalytic properties compared with that of MCo_(3)O_(4),were successfully prepared through pyrolysis of Mn-doped Co-MOF.The as-synthesized MCo1Mn1Ox(Co:Mn=1:1)exhibits an optimal catalytic activity with 90%toluene conversion reached at227℃,which benefits from the increase of Co^(3+),Oadsand the synergistic effect between Mn and Co.According to the analysis of the in situ diffuse reflectance infrared Fourier transform spectroscopy,toluene could be degraded easier on M-Co1Mn1Oxwith lower activation energy than M-Co_(3)O_(4).The main intermediate products are benzaldehyde,benzoic acid,anhydride,and maleate species.Those findings reveal the value of Mn doping for improved activity of toluene oxidation on MOF derived Co_(3)O_(4),which provide a feasible method for the construction of toluene-oxidation catalysts.
