The adsorption-desorption behavior of the mixed rare earth elements(RE)on the main types of soils of China,kaolinite and synthetic oxides was studied.The isothermal adsorption of RE was fitted to Langmuir.Freundlich a...The adsorption-desorption behavior of the mixed rare earth elements(RE)on the main types of soils of China,kaolinite and synthetic oxides was studied.The isothermal adsorption of RE was fitted to Langmuir.Freundlich and Temkin equations.The main factors determining the RE adsorption capacity of the soils are the type of clay mineral and the content of amorphous iron oxide in the soils.The above two fac- tors and the pH of soil determine the RE adsorption ability of the soils.The soil and synthetic iron,manga- nese oxides strongly adsorb RE specifically.展开更多
A convenient,efficient and practical metal-free method for the synthesis of substituted phenols from arylboronic acids has been developed.The protocol uses hydrogen peroxide as a hydroxylating agent ammonium bicarbona...A convenient,efficient and practical metal-free method for the synthesis of substituted phenols from arylboronic acids has been developed.The protocol uses hydrogen peroxide as a hydroxylating agent ammonium bicarbonate as an additive,and the reactions were conveniently performed in water at room temperature.The method shows an excellent tolerance of functional groups,so it will find a wide variety of applications in academic and industrial research.展开更多
文摘The adsorption-desorption behavior of the mixed rare earth elements(RE)on the main types of soils of China,kaolinite and synthetic oxides was studied.The isothermal adsorption of RE was fitted to Langmuir.Freundlich and Temkin equations.The main factors determining the RE adsorption capacity of the soils are the type of clay mineral and the content of amorphous iron oxide in the soils.The above two fac- tors and the pH of soil determine the RE adsorption ability of the soils.The soil and synthetic iron,manga- nese oxides strongly adsorb RE specifically.
基金the National Natural Science Foundation of China (No. 21105054) for financial support
文摘A convenient,efficient and practical metal-free method for the synthesis of substituted phenols from arylboronic acids has been developed.The protocol uses hydrogen peroxide as a hydroxylating agent ammonium bicarbonate as an additive,and the reactions were conveniently performed in water at room temperature.The method shows an excellent tolerance of functional groups,so it will find a wide variety of applications in academic and industrial research.
