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Journal of China University of Mining and Technology 2008年第1期18卷 112-115页

作者： ZHAO Wei YAO Li-ping LIN Juan ZONG Zhi-min School of Chemical Engineering China University of Mining ＆ Technology Xuzhou Jiangsu 221008 China

electrolytic reductions of oxygenic functional groups （OFGs） on coal surface and coal model compounds with OFGs in an aqueous NaCl solution are studied by electrochemical methods combined with GC/MS, GC and FFIR analyses. Different electrode reactions, their corresponding potentials and dynamic equations during the processes are investigated. The results show that benzoic acid, benzaldehyde, benzalcohol and hypnone are reduced to benzaldehyde and benzalcohol, methoxybenzene and benzal- cohol, toluene and styrene, respectively, at the cathode. The corresponding electrode potentials and dynamic equations are deter- mined. *** reduction also leads to an increase in the contents of hydroxyl groups and aliphatic moieties and a corresponding decrease in those of carboxyl and carbonyl groups in Nantong coal, a high-sulfur coal, an enhancement in the flotation desulfurization of the coal. ER also reduces organic sulfur and FeS2 in the coal.

关键词： coal model compounds electrolytic reduction dynamic equations

Electrode Effect on Separation of Yb/Tm, Lu by an electrolytic reduction Process in Sulphate Medium

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Journal of Rare Earths 2005年第5期23卷 645-645页

作者： Zhang Bo Jia Jiangtao Liao Chunsheng Yan Chunhua Deng Guangming Dai Zhidong Xue Jihui State Key Lab of Rare Earth Materials Chemistry and Applications Beijing100871 China Belting Institute of Founder Rare Earth Science and Technology Beijing100085 China Liyang Rhodia-Founder Rare Earths New Materials Co. Ltd. Liyang213300 China

YbSO4 purification by an electrolytic reduction method from Tm-Yb-Lu concentrates in sulphate medium was studied, in which Ru-Ir-Ti alloy nets and mercury were used as anode and cathode respectively under normal atmosphere without nitrogen or argon gas protection. The parameters of the electrodes, such as their areas, positions, and the distance between the anode and cathode were optimized for the electrolytic reduction process. By the optimal process, the product YbSO4 is purified to 99. 5% with recovery of 80%. Meanwhile, Lu is also concentrated into 50%, which is beneficial to its further purification.

关键词： ytterbium thulium lutetium electrolytic reduction electrode sulphate rare earths

Effect of temperature on corrosion behavior of 3003 aluminum alloy in ethylene glycol–water solution

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Chinese Journal of Aeronautics 2016年第4期29卷 1142-1150页

作者： Chen Xin Tian Wenming Li Songmei Yu Mei Liu Jianhua School of Material Science and Technology Beihang University

The effect of temperature on the corrosion behavior of 3003 aluminum alloy in ethylene glycol–water solution was investigated by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques. The surface characterization was observed and determined by scanning electron microscopy (SEM), atomic force microscopy (AFM) and energy dispersive spectrometer (EDS). The results demonstrate that the anodic aluminum dissolution and the cathodic oxygen reduction were accelerated by the increased temperature. However, as temperature was over 60 °C, the solubility and concentration of oxygen decreased, resulting in the inhibition of cathodic reaction. The cathodic reaction rate of 3003 aluminum alloy rose to the maximum at 60 °C. The Warburg impedance in Nyquist diagram diminished and then was replaced by a negative capacitance caused by the absorption of intermediate corrosion product on electrode. On the other hand, after potentiodynamic measurements, 3003 aluminum alloy suffered pitting corrosion. The dissolution of aluminum alloy around secondary phase particles expanded both horizontally and vertically. © 2016 The Authors

关键词： Aluminum Atomic force microscopy Corrosion Corrosive effects Dissolution Electrochemical corrosion Electrochemical impedance spectroscopy electrolytic reduction Ethylene Ethylene glycol Pitting Polyols Scanning electron microscopy Spectrometers Temperature

Nanocarbons and their hybrids as catalysts for non-aqueous lithium–oxygen batteries

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Journal of Energy Chemistry 2016年第6期25卷 957-966页

作者： Yunchuan Tu Dehui Deng Xinhe Bao State Key Laboratory of Catalysis iChEM Dalian Institute of Chemical Physics Chinese Academy of Sciences Collaborative Innovation Center of Chemistry for Energy Materials College of Chemistry and Chemical Engineering Xiamen University University of Chinese Academy of Sciences

Rechargeable lithium-oxygen (Li–O2) batteries have been considered as the most promising candidates for energy storage and conversion devices because of their ultra high energy density. Until now, the critical scientific challenges facing Li–O2batteries are the absence of advanced electrode architectures and highly efficient electrocatalysts for both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), which seriously hinder the commercialization of this technology. In the last few years, a number of strategies have been devoted to exploring new catalysts with novel structures to enhance the battery performance. Among various of oxygen electrode catalysts, carbon-based materials have triggered tremendous attention as suitable cathode catalysts for Li–O2batteries due to the reasonable structures and the balance of catalytic activity, durability and cost. In this review, we summarize the recent advances and basic understandings related to the carbon-based oxygen electrode catalytic materials, including nanostructured carbon materials (one-dimensional (1D) carbon nanotubes and carbon nanofibers, 2D graphene nanosheets, 3D hierarchical architectures and their doped structures), and metal/metal oxide-nanocarbon hybrid materials (nanocarbon supporting metal/metal oxide and nanocarbon encapsulating metal/metal oxide). Finally, several key points and research directions of the future design for highly efficient catalysts for practical Li–O2batteries are proposed based on the fundamental understandings and achievements of this battery field. © 2016 Science Press

关键词： Carbon nanofibers Catalyst activity Catalysts Electric batteries Electrocatalysis Electrocatalysts Electrodes electrolytic reduction Lithium Lithium batteries Oxygen Secondary batteries Yarn

Study on Electrochemical Formation of Neodymium-Iron Alloy

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Rare Metals 1989年第3期9卷 9-14页

作者： Yang, Qiqin Liu, Guankun Fang, Zhongan Sha, Lichang Zhongshan Univ China

The cyclic voltammetry was used to investigate the electrode processes of Nd(III) reduced on iron electrode and Nd(III),Fe(II) reduced on molybdenum electrode in molten chlorides. The Nd-Fe and Nd-rich RE-Fe alloys contained rare earth up to 90wt% were prepared by consumable cathode and electrolytic codeposition. The mechanism of electrochemical formation of Nd-Fe alloy had been discussed.

关键词： electrolytic Analysis Magnets Manufacture Neodymium Compounds electrolytic reduction Neodymium Iron Boron Alloys Magnetic Properties Salts Molten

Electroreduction of Samarium Ion on Co and CuCathodes in Molten Chloride

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Rare Metals 1995年第2期14卷 127-130页

作者：童叶翔杨绮琴刘冠昆钟奇志中山大学广东广州

The cyclic voltammetry was used to study the electrochemical reaction of Sm(III) in NaCl-KCl equimolar mixture on the Co and Cu cathodes. It is reasonable to presume that the reduction of Sm(III) to Sm(II) was realized on Co and Cu electrodes respectively at first step. Sm(II) was subject to the reduction and formed alloys with Co and Cu on the electrode surface.

关键词： Cathodes Copper electrolytic reduction Ions Metallurgy

Desulfurization of coal by an electrochemical-reduction flotation technique

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Journal of China University of Mining and Technology 2008年第4期18卷 571-574页

作者： ZHAO Wei XU Wen-juan ZHONG Shi-teng ZONG Zhi-min School of Chemical Engineering and Technology China University of Mining ＆ Technology Xuzhou Jiangsu 221116 China

The optimum conditions for sulfur removal from coal by electrochemical reduction flotation in an aqueous NaCl solution were determined from orthogonal experiments. The effect of electrolytic conditions on the desulfurization ratio was also studied. The electrochemical-reduction processed coal was examined by X-ray diffraction, Fourier transform infrared spectroscopy and wet chemical analysis. The results show that electrochemical reduction converts hydrophobic pyrite in Nantong coal into hydrophilic FeS and S2- and leads to an increase in the concentration of hydroxyl groups and aliphatic moieties and a corresponding decrease in carboxyl and carbonyl groups, which enhances the flotation desulfurization of the coal.

关键词： desulfurization coal electrolytic reduction flotation

A Study on the Kinetics of the Europium Electrochemistry reduction (Ⅱ)——The Europium Electroreduction Kinetic Properties

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Journal of Rare Earths 1993年第2期11卷 124-129页

作者：邰德荣凌小平马栩泉 Institute of Nuclear Energy Technology Tsinghua UniversityBeijing 102201China

This article studied the europium electroreduction kinetic properties in the Sm-Eu-Gd chloride system by using an electrolytic cell with membrane and constant potential *** results indicate that within the parameter range of this study the europium reduction speed up with the increase of the system's temperature,the stirring intensity,feed concentration and the cathod area,and with the decrease of the cathodic *** the feed acidity increases,the reduction rate *** empirical formula for europium's electroreduction kinetics in this experimental condition is also given.

关键词： Sm-Eu-Gd chloride electrolytic reduction Constant potential reduction efficiency Kinetics