Over Pd/Fe bimetallic catalyst, o-nitrochlorobenzene（o-NCB）, at a concentration of 20 mg/L in aqueous solutions, is rapidly converted to o-chloroaniline（o-CAN） first, and then quickly dechlorinated to aniline（AN...Over Pd/Fe bimetallic catalyst, o-nitrochlorobenzene（o-NCB）, at a concentration of 20 mg/L in aqueous solutions, is rapidly converted to o-chloroaniline（o-CAN） first, and then quickly dechlorinated to aniline（AN） and Cl^- , without other intermediate reaction products. The aminated and dechlorinated reactions are believed to take place on the surface site of the Pd/Fe. The o-NCB removal efficiency and the next dechlorination rate increase with an increase of bulk loading of palladium and catalysts addition due to the increase of both the surface loading of palladium and the total surface area. These results indicate that reduction, amination and dechlorination of o- NCB by palladium-catalyzed Fe^0 particles, can be designed for remediation of contaminated groundwater.展开更多
We reported the synthesis of [Ni（hmta）][SSP(OC10H7-2)2]2(where hmta is 5,7,7,12,14,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane,and 2-C10H7O-is 2-nathphthyloxy).The complex is characterized by elemental analysis,...We reported the synthesis of [Ni（hmta）][SSP(OC10H7-2)2]2(where hmta is 5,7,7,12,14,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane,and 2-C10H7O-is 2-nathphthyloxy).The complex is characterized by elemental analysis,IR spectra,1HNMR spectra,electronic spectra and TG-DTA thermal analysis,and its crystal structure has been determined.The compound belongs to triclinic system,space group P ī with the following crystallographic parameters:a=7.691（2）,b=10.505（5）,c=17.692（5）,α=105.52（3）°,β=90.09（3）°,γ=103.92（4）°,V=1333.5（8）3,DC=1.377g/cm3,F（000）=582,μ（Mo Kα）=0.631mm-1,Z=1,and final R=0.0752,wR=0.1957 for 2425 observed reflections（I>2σ（I））.The analytical results of crystal structure and spectroscopic properties show that a square planar complex cation [Ni（hmta）]2+ is formed by coordination of four nitrogen atoms of ligand hmta to Ni（Ⅱ）.There isn’t interaction of Ni（Ⅱ） with sulfur atom of (2—C10H7O)2PSS-anion,but there are three N-H…S hydrogen bonds between [Ni（hmta）]2+ complex cation and(2—C10H7O)2PSS-anion in the compound.展开更多
基金The National Natural Science Foundation of China( No. 20407015) and the Science and Technology Project of Zhejiang Province of China( No.2004C34006)
文摘Over Pd/Fe bimetallic catalyst, o-nitrochlorobenzene（o-NCB）, at a concentration of 20 mg/L in aqueous solutions, is rapidly converted to o-chloroaniline（o-CAN） first, and then quickly dechlorinated to aniline（AN） and Cl^- , without other intermediate reaction products. The aminated and dechlorinated reactions are believed to take place on the surface site of the Pd/Fe. The o-NCB removal efficiency and the next dechlorination rate increase with an increase of bulk loading of palladium and catalysts addition due to the increase of both the surface loading of palladium and the total surface area. These results indicate that reduction, amination and dechlorination of o- NCB by palladium-catalyzed Fe^0 particles, can be designed for remediation of contaminated groundwater.
文摘We reported the synthesis of [Ni（hmta）][SSP(OC10H7-2)2]2(where hmta is 5,7,7,12,14,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane,and 2-C10H7O-is 2-nathphthyloxy).The complex is characterized by elemental analysis,IR spectra,1HNMR spectra,electronic spectra and TG-DTA thermal analysis,and its crystal structure has been determined.The compound belongs to triclinic system,space group P ī with the following crystallographic parameters:a=7.691（2）,b=10.505（5）,c=17.692（5）,α=105.52（3）°,β=90.09（3）°,γ=103.92（4）°,V=1333.5（8）3,DC=1.377g/cm3,F（000）=582,μ（Mo Kα）=0.631mm-1,Z=1,and final R=0.0752,wR=0.1957 for 2425 observed reflections（I>2σ（I））.The analytical results of crystal structure and spectroscopic properties show that a square planar complex cation [Ni（hmta）]2+ is formed by coordination of four nitrogen atoms of ligand hmta to Ni（Ⅱ）.There isn’t interaction of Ni（Ⅱ） with sulfur atom of (2—C10H7O)2PSS-anion,but there are three N-H…S hydrogen bonds between [Ni（hmta）]2+ complex cation and(2—C10H7O)2PSS-anion in the compound.
