Atom economy of the process of rare earth separation by using fluoride was discussed in this paper.We compared the atomic economic characters between the processes of vitriolic composite salt and fluoride,then stated ...Atom economy of the process of rare earth separation by using fluoride was discussed in this paper.We compared the atomic economic characters between the processes of vitriolic composite salt and fluoride,then stated that changing present rare earth producing process by green chemistry and technology transformation was the best way to make our rare earth manufacture prosperous.展开更多
Degraded chitosan, with highly water-solubility, was obtained by the oxidation of chitosan with H2O2, and then reacted with furrural. The final product coordinated with the rare earth ions （RE^3＋ = Sm^3＋, Eu^3＋）,...Degraded chitosan, with highly water-solubility, was obtained by the oxidation of chitosan with H2O2, and then reacted with furrural. The final product coordinated with the rare earth ions （RE^3＋ = Sm^3＋, Eu^3＋）, which led to the formation of the complexes. The prepared complexes were characterized with Infrared Spectroscopy （IR）, Ultra Violet （UV）, fluorescence, X-Ray Diffraction （XRD）, and Thermogravimetric-Differential Scanning Calorimetry （TG-DSC） measurements.展开更多
文摘Atom economy of the process of rare earth separation by using fluoride was discussed in this paper.We compared the atomic economic characters between the processes of vitriolic composite salt and fluoride,then stated that changing present rare earth producing process by green chemistry and technology transformation was the best way to make our rare earth manufacture prosperous.
基金Project supported by the Natural Science Foundation of Education Department of Jiangsu Province (07KJA108017)Jiangsu Provincial Key Laboratory of Coastal Wetland Bioresources and Environmental Protection (JLCBE07028)
文摘Degraded chitosan, with highly water-solubility, was obtained by the oxidation of chitosan with H2O2, and then reacted with furrural. The final product coordinated with the rare earth ions （RE^3＋ = Sm^3＋, Eu^3＋）, which led to the formation of the complexes. The prepared complexes were characterized with Infrared Spectroscopy （IR）, Ultra Violet （UV）, fluorescence, X-Ray Diffraction （XRD）, and Thermogravimetric-Differential Scanning Calorimetry （TG-DSC） measurements.
