Electroreduction of Co(Ⅱ) and La(Ⅲ)in UreaMelt

ＥｌｅｃｔｒｏｒｅｄｕｃｔｉｏｎｏｆＣｏ（Ⅱ）ａｎｄＬａ（Ⅲ）ｉｎＵｒｅａＭｅｌｔＹａｎｇＱｑｉｎ，ＱｉｕＫａｉｒｏｎｇａｎｄＰａｎＳｈｉｊｉａｎ（杨绮琴）（丘开容）（潘仕健）ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｓｔｒｙ，ＺｈｏｎｇｓｈａｎＵｎｉｃｕｅ...     

Electroreduction of Yb(Ⅲ) on Co Cathode in Molten Chloride

ＥｌｅｃｔｒｏｒｅｄｕｃｔｉｏｎｏｆＹｂ（Ⅲ）ｏｎＣｏＣａｔｈｏｄｅｉｎＭｏｌｔｅｎＣｈｌｏｒｉｄｅ①ＬｉｕＧｕａｎｋｕｎ，ＴｏｎｇＹｅｘｉａｎｇ，ＹａｎｇＱｉｑｉｎ，ＨｏｎｇＨｕｉｃｈａｎａｎｄＣｈｅｎＳｈｅｎｇｙａｎｇ（刘冠昆）（童叶翔）（杨绮琴...     

The Property of Alkylthiophosphoric Cobalt and Separation of Co(Ⅱ) and Ni(Ⅱ)

ＴｈｅＰｒｏｐｅｒｔｙｏｆＡｌｋｙｌｔｈｉｏｐｈｏｓｐｈｏｒｉｃＣｏｂａｌｔａｎｄＳｅｐａｒａｔｉｏｎｏｆＣｏ（Ⅱ）ａｎｄＮｉ（Ⅱ）ＬｉｕＸｉｎｇｚｈｉａｎｄＸｕｅＨｏｎｇ（刘兴芝）（薛红）ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｓｔｒｙ，Ｌｉａｏｎｉｎｇ...     

Synthesis and fluorescent properties in complexes of Eu(Ⅲ), Tb(Ⅲ), and Sm(Ⅲ) with β-diketone and 2,2'-bipyridine

Three new rare earth ternary complexes,RE(PB)3bpy (RE-Sm3+,Eu3+,and Tb3+),were synthesized by the reaction of 1-(p-phenylethynyl-phenyl)-1,3-butanedione (HPB) and 2,2'-bipyridine (bpy) with rare earth chloride REC13,respectively,in alcohol solution.The compositions were characterized by means of infrared (IR) spectra,chemical analysis,elemental analysis,and thermodynamic analysis.Luminescent properties of the three complexes were studied.At room temperature,under UV light excitation,the Sm3+,Eu3+,and Tb3+ complexes exhibit characteristic emission of the central ions.The fluorescence spectra show that the fluorescence emission intensity of Eu3+ complex is the strongest.The narrow strongest emission band of Eu3+ complex is considered to be a valuable material with bright red fluorescence.     

Separation of indium(Ⅲ),gallium(Ⅲ),and zinc(Ⅱ) with Levextrel resin containing di(2-ethylhexyl) phosphoric acid (CL-P204):Part Ⅱ.Mechanism and kinetics of adsorbing indium(Ⅲ)

The mechanism of adsorbing indium(Ⅲ) from sulfate solutions with CL-P204 Levextrel resin containing di(-2-ethylhexyl) phosphoric acid was examined by batch operation and infrared spectra. The results showed that the P204 adsorbed on the resin behaved in the similar way to solvent extraction except that it was as a monomer in resin adsorbing but in dimeric form in solvent extraction. Three factors including temperature, indium(Ⅲ) concentration of solution, and the size of resin particles which influence the In3 /H exchange on CL-P204 Levextrel resin were investigated by the modified limited batch technique in order to determine the kinetics of In3 /H exchange. It was found that the rate of ion exchange increased with the temperature and the concentration of solution increasing and with the size of the resin particles decreasing. According to the expression developed by Boyd et al, the controlling factor of In3 /H exchange on CL-P204 Levextrel resin was the diffusion through the resin particles. The     

Electroreduction of Samarium Ion on Co and CuCathodes in Molten Chloride

ＥｌｅｃｔｒｏｒｅｄｕｃｔｉｏｎｏｆＳａｍａｒｉｕｍＩｏｎｏｎＣｏａｎｄＣｕＣａｔｈｏｄｅｓｉｎＭｏｌｔｅｎＣｈｌｏｒｉｄｅＴｏｎｇＹｅｘｉａｎｇ，ＹａｎｇＱｉｑｉｎ，ＬｉｕＧｕａｎｋｕｎａｎｄＺｈｏｎｇＱｉｚｈｉ（童叶翔）（杨绮琴）（刘冠昆）（钟奇...     

Electrochemical and Kinetic Behavior of Ni(Ⅱ)Ion in DMF

１ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅｎｉｃｋｅｌａｌｏｙｓａｎｄｃｏｍｐｌｅｘｅｓａｒｅｗｉｄｅｌｙｕｓｅｄａｓｍａｇｎｅｔｉｃ，ｏｐｔｉｃａｌ，ｎｕｃｌｅａｒａｎｄｓｕｐｅｒｃｏｎｄｕｃｔｉｎｇｍａｔｅｒｉａｌｓ［１，２］．Ｍａｎｙｎｉｃｋｅｌｃｏｍ...     

Separation of indium(Ⅲ),gallium (Ⅲ),and zinc(Ⅱ)with Levextrel resin containing di(2-ethylhexyl)phosphoric acid(CL-P204):Part Ⅰ. Selection of separation conditions

A kind of Levextrel resin separation process was developed for separation of indium (Ⅲ), gallium (Ⅲ), and zinc (Ⅱ) from aqueous sulfate solution with Levextrel resin containing di(2-ethylhexyl) phosphoric acid (CL-P204). The aim of the research is to collect preliminary results for a pilot-scale production. Properties of adsorbing indium (Ⅲ), gallium (Ⅲ),and zinc (Ⅱ) from sulfate solution with the Levextrel resin were first studied by batch operation and column operation. The optimum pH, adsorption capacities and concentrations of stripping agents for indium (Ⅲ), gallim (Ⅲ) were tested. The separation order of indium (Ⅲ), gallim (Ⅲ), and zinc (Ⅱ) from sulfate solution with CL-P204 Levextrel resin was found that indium (Ⅲ) could be first separated by adsorbing at the acidity of 1.0 mol/L whereas gallium (Ⅲ) and zinc (Ⅱ) could not, and they were adsorbed together by adsorbing at pH = 2.8, then separated from each other by stripping with 0.1 and 0.5mol/L hydrochloric acid, respectively. The recoveries of three metal ions were all higher than 99%. The cyclic properties of this resin are well.     

Separation of indium (Ⅲ), gallium (Ⅲ), and zinc (Ⅱ) with Levextrel resin containing di(2-ethylhexyl) phosphoric acid (CL-P204): Part I. Selection of separation conditions

A kind of Levextrel resin separation process was developed for separation of indium (Ⅲ), gallium (Ⅲ), and zinc (Ⅱ) from aqueous sulfate solution with Levextrel resin containing di(2-ethylhexyl) phosphoric acid (CL-P204). The aim of the research is to collect preliminary results for a pilot-scale production. Properties of adsorbing indium (Ⅲ), gallium (Ⅲ), and zinc (Ⅱ) from sulfate solution with the Levextrel resin were first studied by batch operation and column operation. The optimum pH, adsorption capacities and concentrations of stripping agents for indium (Ⅲ), gallium (Ⅲ) were tested. The separation order of indium (Ⅲ), gallium (Ⅲ), and zinc (Ⅱ) from sulfate solution with CL-P204 Levextrel resin was found that indium (Ⅲ) could be first separated by adsorbing at the acidity of 1.0 mol/L whereas gallium (Ⅲ) and zinc (Ⅱ) could not, and they were adsorbed together by adsorbing at pH = 2.8, then separated from each other by stripping with 0.1 and 0.5 mol/L hydrochloric acid, respectively. T     

Thermal Decomposition Kinetics of Ni(Ⅱ) Complex with Norfloxacin

１ＩｎｔｒｏｄｕｃｔｉｏｎＮｏｒｆｌｏｘａｃｉｎｂｅｌｏｎｇｓｔｏｔｈｅｃｏｍｐｏｕｎｄｏｆｔｈｅｓｅｒｉｅｓｏｆｃａｒｂｏｓｔｙｒｉｌｃｏｎｔａｉｎｉｎｇｆｌｕｏｒｉｎｅ．Ｉｔｉｓａｂｒｏａｄｓｐｅｃｔｒｕｍａｎｔｉｍｉｃｒｏｂｉａｌ，ａｎｄ...     

Synthesis and fluorescent properties in complexes of Eu(III), Tb(III), and Sm(III) with β-diketone and 2,2′-bipyridine

Three new rare earth ternary complexes, RE（PB）₃bpy (RE=Sm³⁺ , Eu³⁺ , and Tb³⁺ ), were synthesized by the reaction of 1-（p-phenylethynyl- phenyl）-1,3-butanedione （HPB） and 2,2′-bipyridine （bpy） with rare earth chloride RECl₃ , respectively, in alcohol solution. The compositions were characterized by means of infrared （IR） spectra, chemical analysis, elemental analysis, and thermodynamic analysis. Luminescent properties of the three complexes were studied. At room temperature, under UV light excitation, the Sm³⁺ , Eu³⁺ , and Tb³⁺ complexes exhibit characteristic emission of the central ions. The fluorescence spectra show that the fluorescence emission intensity of Eu³⁺ complex is the strongest. The narrow strongest emission band of Eu³⁺ complex is considered to be a valuable material with bright red fluorescence.     

Formation of Dy－Co Alloy and Preparation in Chloride Melt by Molten Salt Electrolysis

ＦｏｒｍａｔｉｏｎｏｆＤｙ－ＣｏＡｌｌｏｙａｎｄＰｒｅｐａｒａｔｉｏｎｉｎＣｈｌｏｒｉｄｅＭｅｌｔｂｙＭｏｌｔｅｎＳａｌｔＥｌｅｃｔｒｏｌｙｓｉｓＬｉｕＧｕａｎｋｕｎ，ＴｏｎｇＹｅｘｉａｎｇ，ＨｏｎｇＨｕｉｃｈａｎ，ＣｈｅｎＳｈｅｎｇｙａｎｇａｎｄＧ...     

Codepositon of Nanodiamonds with Chromium(Ⅲ)

This paper studied the dispersion of Detonation Nano-diamond(DND)in acid medium,then well dispersed DND suspension with different concentrations were added to the trivalent chromium electrolyte.The chromium and chromium-nanodiamond composite coatings were prepared by composite plating process.Scanning electron microscopy(SEM) confirmed the presence of composite coatings and Energy Dispersive X-ray Analysis(EDX)revealed the composition,the effect of coating time on microhardness of chromium coatings and chromium-nanodiamond coatings were disscussd.It is found that the addition of nanodiamond increases the microhardness of the coatings.When the concentration of DND in electrolyte is 2.0-3.0 g/L,the plating time is about 15-20 min,the maximum hardness is obtained.     

Recovery of Co（Ⅱ） and Ni（ Ⅱ） from hydrochloric acid solution of alloy scrap

A hydrometallurgical process was developed for recovery of nickel and cobalt from the hydrochloric acid leaching solution of alloy scraps. The process consists of five maj or unit operations： 1） leaching with 6 mol/L hydrochloric acid under the L/S ratio of 10：1 at 95 ℃ for 3 h; 2） copper replacement by iron scraps under pH value of 2.0 at 80 ℃, and stirring for 1 h, 3） removal of iron and chromium by chemical precipitation： iron removal under pH value of 2.0 at 90 ℃ by dropwise addition of sodium chlorate and 18% sodium carbonate solution, then chromium removal under pH value of 4.0 at 70 ℃ by addition of nickel carbonate solution, stirred by air flow for 2 h; 4） selective separation of cobalt from nickel by extraction using 30% trialkyl amine＋50% kerosene （volume fraction） and tri-n-butylphosphate （TBP） as a phase modifier with the O/A ratio of 2：1, and stripping of cobalt with 0.01 mol/L HCl; 5） crystallization of nickel chloride and electrodeposition of cobalt. It is found that the nickel recovery of 95% and the cobalt recovery of approximately 60% with purity over 99.9% are obtained by this process.     

Extraction and separation of Ga(Ⅲ) and T1(Ⅰ) or In(Ⅲ) and T1(Ⅰ) from chloride media with CA-12 in sulphonating kerosene

The extraction behavior and mechanism of gallium(Ⅲ) and thallium(Ⅰ) or indium(Ⅲ) and thallium(Ⅰ) with Sec-octylphenoxy acetic acid (CA-12) from hydrochloric acid solution in sulphonating kerosene were studied. Optimum extraction conditions were evaluated from critical study of various experimental parameters and the probable composition of the extracted species is ascertained from lg D-lg C plots. The effects of different ions on the determination of these ions were examined.     

DEHPA在Petrofin中萃取分离La(Ⅲ)和Ni(Ⅱ)的动力学与机理（英文）

采用界面积恒定的连续搅拌萃取池,研究在乳酸存在条件下,以用Petrofin稀释的二-2-乙基己基磷酸(DEHPA)作萃取剂从硝酸盐介质中萃取分离La(Ⅲ)与Ni(Ⅱ)的动力学。考察搅拌速度、界面积、p H值、乳酸浓度、萃取剂浓度、金属离子浓度和温度对萃取速率的影响。结果表明,该萃取体系是受扩散控制的,界面反应为速率控制步骤。两种金属离子的萃取速率均与p H值无关。La(Ⅲ)和Ni(Ⅱ)的萃取速率与乳酸浓度和金属离子(La(Ⅲ)或Ni(Ⅱ))浓度呈线性关系。La(Ⅲ)的萃取速率与DEHPA浓度呈线性关系,而Ni(Ⅱ)的萃取速率则与DEHPA浓度的1.5次方呈线性关系。在低界面积和低搅拌速度的条件下,从硝酸盐溶液中分离La(Ⅲ)和Ni(Ⅱ)是可行的。     

Electrolytic Codeposition of Y(Ⅲ) and Al(Ⅲ) and Surface Metalliding in Molten Fluorides - Oxides Systems

１ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅａｐｐｌｉｃａｔｉｏｎｓｏｆｒａｒｅｅａｒｔｈｍｅｔａｌｓａｎｄｔｈｅｉｒａｌｏｙｓｂｅｃｏｍｅｗｉｄｅｒａｎｄｗｉｄｅｒ．Ｔｈｅｉｒｄｅｍａｎｄｉｓｒｉｓｉｎｇｓｔｅａｄｉｌｙｗｉｔｈｔｈｅｄｅｖｅｌｏｐｍｅｎｔａ...     

Extraction-chromatographic Separation of Microamount of Indium(Ⅲ) with DMH(MP) Resin and Its Analytical Application

The optimum conditions for extraction-chromatography using di-(l-methylheptyl) methylphosphonateresin to separate indium(Ⅲ) from its coexisting metal ions were studied. A procedure for extraction-chromatographic separation and spectrophotometric determination of indium has been developed. This proce-dure gives more clear-cut separation and higher accuracy and reproducibility than ordinarily used separationby solvent extraction with butyl acetate. Besides, it can be used to separate and determine cadmiumsimultaneously.     

Glass formation in La-based La–Al–Ni–Cu–(Co) alloys by Bridgman solidification and their glass forming ability

Six La-based La–Al–Ni–Cu–(Co) alloys were subjected to a systematical study of glass formation by Bridgman unidirectional solidification at growth velocities between 0.1 and 4.82 mm/s at a temperature gradient of 15 K/mm. With increased Cu content the critical growth velocity for glass formation in La₅₅Al₂₅Cu_20−xNi_x (x=0–20) alloys shows a steep minimum at 10 at.% Cu, indicating the largest glass forming ability for the La₅₅Al₂₅Ni₁₀Cu₁₀ alloy. However, replacement of Ni by Co leads to a further decrease in the critical cooling rate for the La₅₅Al₂₅Ni₅Cu₁₀Co₅ alloy. Critical cooling rates for glass formation in the present alloys were also obtained through a study of their melting and solidification behaviours by thermal analytical measurement. The effect of alloying addition and the significance of reduced glass transition temperature for the glass forming ability of these alloys is discussed.