FT-IR spectroscopy online was used to investigate DECP(Diethyl chlorophosphite)degraded by photocatalytic oxidation on nano-TiO2(P25).GC-MS spectrograph was used to analyze the products.It is possible to predict the m...FT-IR spectroscopy online was used to investigate DECP(Diethyl chlorophosphite)degraded by photocatalytic oxidation on nano-TiO2(P25).GC-MS spectrograph was used to analyze the products.It is possible to predict the mechanism of gas-solid phase photocatalytic degradation of DECP.The reaction may be take place by follow pathway:electron-hole couple was produced in illuminated TiO2 by UV irradiated,and the couple evoke reactions with DECP,H2O,-OH to produce various radicals.DECP can be degraded to inorganic compounds by the chain-reaction of radicals.The products include CO2,H2O,CO,HCl,et al.The chain-reaction will be terminated when radicals vanish,and the intermediates were produced,such as methane,alcohol,ethanal,DEHP(Diethyl hydroxyphosphonate),DEP(Diethyl phosphate),TEP(Triethyl phosphate),et al.展开更多
This study explores the controllable synthesis of CuAlO_(2) using copper hydroxide and pseudo-boehmite powders as raw materials via a simple solid-phase ball milling method,along with its catalytic performance investi...This study explores the controllable synthesis of CuAlO_(2) using copper hydroxide and pseudo-boehmite powders as raw materials via a simple solid-phase ball milling method,along with its catalytic performance investigation in methanol steam reforming(MSR).Various catalysts were prepared under different conditions,such as calcination temperature,calcination atmosphere,and heating rate.Characterization techniques including BET,XRD,XPS,SEM and H2-TPR were employed to analyze the samples.The results revealed significant effects of calcination temperature on the phase compositions,specific surface area,reduction performance,and surface properties of the CA-T catalysts.Based on the findings,a synthesis route of CuAlO_(2) via the solid-phase method was proposed,highlighting the importance of high calcination temperature,nitrogen atmosphere,and low heating rate for CuAlO_(2) formation.Catalytic evaluation data demonstrated that CuAlO_(2) could catalyze MSR without pre-reduction,with the catalytic performance of CA-T catalysts being notably influenced by calcination temperature.Among the prepared catalysts,the CA-1100 catalyst exhibited the highest catalytic activity and stability.The findings of this study might be useful for the further study of the catalytic material for sustained release catalysis,including the synthesis of catalytic materials and the regulation of sustained release catalytic performance.展开更多
文摘FT-IR spectroscopy online was used to investigate DECP(Diethyl chlorophosphite)degraded by photocatalytic oxidation on nano-TiO2(P25).GC-MS spectrograph was used to analyze the products.It is possible to predict the mechanism of gas-solid phase photocatalytic degradation of DECP.The reaction may be take place by follow pathway:electron-hole couple was produced in illuminated TiO2 by UV irradiated,and the couple evoke reactions with DECP,H2O,-OH to produce various radicals.DECP can be degraded to inorganic compounds by the chain-reaction of radicals.The products include CO2,H2O,CO,HCl,et al.The chain-reaction will be terminated when radicals vanish,and the intermediates were produced,such as methane,alcohol,ethanal,DEHP(Diethyl hydroxyphosphonate),DEP(Diethyl phosphate),TEP(Triethyl phosphate),et al.
基金supported by the Scientific Research Foundation for High-level Talents of Anhui University of Science and Technology(2023yjrc51)the National Natural Science Foundation of China(22172184)+2 种基金the Foundation of State Key Laboratory of Coal Conversion(J24-25-603)the Fundamental Research Project of ICC-CAS(SCJC-DT-2023-01)Weiqiao-UCAS Special Projects on Low-Carbon Technology Development(GYY-DTFZ-2022-015)。
文摘This study explores the controllable synthesis of CuAlO_(2) using copper hydroxide and pseudo-boehmite powders as raw materials via a simple solid-phase ball milling method,along with its catalytic performance investigation in methanol steam reforming(MSR).Various catalysts were prepared under different conditions,such as calcination temperature,calcination atmosphere,and heating rate.Characterization techniques including BET,XRD,XPS,SEM and H2-TPR were employed to analyze the samples.The results revealed significant effects of calcination temperature on the phase compositions,specific surface area,reduction performance,and surface properties of the CA-T catalysts.Based on the findings,a synthesis route of CuAlO_(2) via the solid-phase method was proposed,highlighting the importance of high calcination temperature,nitrogen atmosphere,and low heating rate for CuAlO_(2) formation.Catalytic evaluation data demonstrated that CuAlO_(2) could catalyze MSR without pre-reduction,with the catalytic performance of CA-T catalysts being notably influenced by calcination temperature.Among the prepared catalysts,the CA-1100 catalyst exhibited the highest catalytic activity and stability.The findings of this study might be useful for the further study of the catalytic material for sustained release catalysis,including the synthesis of catalytic materials and the regulation of sustained release catalytic performance.
