The kinetics of ion exchange between Ca2+, Mg2+, Co(Ⅱ), Cu(Ⅱ),Ni(Ⅱ), Fe(Ⅲ), y3+ or Sm3+ , respectively, in 0.50 mol/L HC1 and H+ on macrorecticular sulfonic ion exchange resin and the kinetics of the same reaction...The kinetics of ion exchange between Ca2+, Mg2+, Co(Ⅱ), Cu(Ⅱ),Ni(Ⅱ), Fe(Ⅲ), y3+ or Sm3+ , respectively, in 0.50 mol/L HC1 and H+ on macrorecticular sulfonic ion exchange resin and the kinetics of the same reactions (M -H exchange) when Mn(Ⅱ) coexisted in resin phase as accelerating ion were studied. The accelerating effect manifested and its rule are consistent with the accelerating effect theory based on the concept concerned with adsorption electrical double layer which has been suggested in a previous paper published.展开更多
The transfer of trivalent europium ion in a liquid surfactant membrane system is investigated in order toclarify the characteristics of liquid membrane separation process and the availability of this technique forreco...The transfer of trivalent europium ion in a liquid surfactant membrane system is investigated in order toclarify the characteristics of liquid membrane separation process and the availability of this technique forrecovering trivalent lanthanides and actinides.A layered structure model for the emulsion globule is sug-gested.The equations describing the relationship among the effective membrane thickness,the time andother factors are derived and verified experimentally.Results show that under certain conditions the decreas-ing concentration of europium ion in the external phase is proportional to the square root of the time,the acidity of the internal phase and the carrier concentration in the membrane phase.The membrane phase consists of kerosene（solvent）,Span-80（surfactant）and di-（2-ethylhexyl） phosphoricacid（HDEHP,carrier）.The internal phase is dilute nitric acid and the external phase is aqueous solu-tion containing Eu（NO3）3.The mass transfer rate of europium in this system is high and the recovery ofeuropium may be more than 99%.展开更多
The mass of <sup>168</sup>Dy is measured for the first time,using the two-proton pick-up reaction <sup>170</sup>Er(<sup>18</sup>O,<sup>20</sup>Ne)at an <sup>18<...The mass of <sup>168</sup>Dy is measured for the first time,using the two-proton pick-up reaction <sup>170</sup>Er(<sup>18</sup>O,<sup>20</sup>Ne)at an <sup>18</sup>O energy of 104 MeV.The products of the reaction are detected at the focal plane ofthe Q3D spectrometer.The mass excess of <sup>168</sup>Dy is found to be -58.56±0.14 MeV.展开更多
The mass transfer of thiophene through pervaporation(PV)membranes could be facilitated by certain transitional metal ions like Ag^+,Mn^2+,and Cr^3+thanks to their p complexation with thiophene.In this study,Ag^+,Mn^2+...The mass transfer of thiophene through pervaporation(PV)membranes could be facilitated by certain transitional metal ions like Ag^+,Mn^2+,and Cr^3+thanks to their p complexation with thiophene.In this study,Ag^+,Mn^2+,and Cr^3+ions were loaded onto the polyether block amide(PEBAX)/PAN composite membranes and were tested on the performance for separation of thiophene/n-heptane mixture.Pervaporation test results showed that the pervaporative separation index increased significantly to 73.1%,75.5%,and 97.2%at 30℃for the Ag^+-,Mn2^+-,Cr3^+-loaded PEBAX membranes,respectively,as compared to the pristine PEBAX/PAN composite membrane.展开更多
In this research, an innovative cylindrical automatic battery core oven was designed to avoid the structural deformation that frequently occurs in traditional ovens. The oven could be automatically connected with the ...In this research, an innovative cylindrical automatic battery core oven was designed to avoid the structural deformation that frequently occurs in traditional ovens. The oven could be automatically connected with the electrolyte injection process after baking, achieving improvement in a battery's baking consistency. This contributed to the feasibility of studying the internal heat conduction process of batch battery cores during actual baking processes. A mathematical model of a certain plate battery cell during the baking process was established. The simulation results of the temperature change inside the battery core during the baking process were consistent with the calculation results of the mathematical model. The temperature distribution at each point inside the battery core could be fitted through the thermal conductivity at different temperatures and the temperature distribution between the layers of the battery core.Finally, based on the thermodynamic balance energy conservation method, the relationship between the temperature change inside the battery core and the entire baking process was established. A feasible algorithm for studying the thermal conduction of complex material and internal structure objects in the baking process was obtained.展开更多
文摘The kinetics of ion exchange between Ca2+, Mg2+, Co(Ⅱ), Cu(Ⅱ),Ni(Ⅱ), Fe(Ⅲ), y3+ or Sm3+ , respectively, in 0.50 mol/L HC1 and H+ on macrorecticular sulfonic ion exchange resin and the kinetics of the same reactions (M -H exchange) when Mn(Ⅱ) coexisted in resin phase as accelerating ion were studied. The accelerating effect manifested and its rule are consistent with the accelerating effect theory based on the concept concerned with adsorption electrical double layer which has been suggested in a previous paper published.
文摘The transfer of trivalent europium ion in a liquid surfactant membrane system is investigated in order toclarify the characteristics of liquid membrane separation process and the availability of this technique forrecovering trivalent lanthanides and actinides.A layered structure model for the emulsion globule is sug-gested.The equations describing the relationship among the effective membrane thickness,the time andother factors are derived and verified experimentally.Results show that under certain conditions the decreas-ing concentration of europium ion in the external phase is proportional to the square root of the time,the acidity of the internal phase and the carrier concentration in the membrane phase.The membrane phase consists of kerosene（solvent）,Span-80（surfactant）and di-（2-ethylhexyl） phosphoricacid（HDEHP,carrier）.The internal phase is dilute nitric acid and the external phase is aqueous solu-tion containing Eu（NO3）3.The mass transfer rate of europium in this system is high and the recovery ofeuropium may be more than 99%.
基金The project supported by the Nuclear Industry Science Foundation of China
文摘The mass of <sup>168</sup>Dy is measured for the first time,using the two-proton pick-up reaction <sup>170</sup>Er(<sup>18</sup>O,<sup>20</sup>Ne)at an <sup>18</sup>O energy of 104 MeV.The products of the reaction are detected at the focal plane ofthe Q3D spectrometer.The mass excess of <sup>168</sup>Dy is found to be -58.56±0.14 MeV.
基金The financial support from the Dean Project of Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology (2013Z009)the Guangxi Natural Science Fund (2014jjAA20079)the Guangdong Province of Quality and Technical Supervision Bureau (2018ZZ01) is greatly appreciated
文摘The mass transfer of thiophene through pervaporation(PV)membranes could be facilitated by certain transitional metal ions like Ag^+,Mn^2+,and Cr^3+thanks to their p complexation with thiophene.In this study,Ag^+,Mn^2+,and Cr^3+ions were loaded onto the polyether block amide(PEBAX)/PAN composite membranes and were tested on the performance for separation of thiophene/n-heptane mixture.Pervaporation test results showed that the pervaporative separation index increased significantly to 73.1%,75.5%,and 97.2%at 30℃for the Ag^+-,Mn2^+-,Cr3^+-loaded PEBAX membranes,respectively,as compared to the pristine PEBAX/PAN composite membrane.
基金supported by Tianjin Science and Technology Support Project of China(Grant 14JCTPJC00532)
文摘In this research, an innovative cylindrical automatic battery core oven was designed to avoid the structural deformation that frequently occurs in traditional ovens. The oven could be automatically connected with the electrolyte injection process after baking, achieving improvement in a battery's baking consistency. This contributed to the feasibility of studying the internal heat conduction process of batch battery cores during actual baking processes. A mathematical model of a certain plate battery cell during the baking process was established. The simulation results of the temperature change inside the battery core during the baking process were consistent with the calculation results of the mathematical model. The temperature distribution at each point inside the battery core could be fitted through the thermal conductivity at different temperatures and the temperature distribution between the layers of the battery core.Finally, based on the thermodynamic balance energy conservation method, the relationship between the temperature change inside the battery core and the entire baking process was established. A feasible algorithm for studying the thermal conduction of complex material and internal structure objects in the baking process was obtained.
