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performance; kinetics 1 Introduction The discovery of rare earth-based AB5-type hydrogen storage alloys makes the Ni-MH batteries commercialized in 1990. Consequently, the rare earth-based AB5-type alloys... of the La/Mg ratio on the diffusion ability of hydrogen atoms and the charge-transfer rate, with the aim of discovering the mechanism that impacts the electrochemical kinetics of the alloy by varying......
, the calculation is difficult to get an analytic solution. Therefore, the theoretical investigation on the hydrogen absorption and desorption of kinetics in MgH2-based alloys is still not satisfactory in comparison... and with a ball to powder mass ratio of 10/1 for 0.25 h. Fig.1 shows the hydrogen desorption kinetics of MgH2 milled with 10% Nb2O5 (nano and micro particles) for 0.25 h at 573 K. Fig.1 Kinetic curves......
better hydriding kinetics than that of the as-cast Mg3La alloy at room temperature. The kinetic curve could be well fitted by Avrami-Erofeev equation. Key words:hydrogen storage; magnesium based...Effect of ball milling on hydrogen storage of Mg3La alloy SUN Tai1,ZHU Min1,DONG Hanwu1,OUYANG Liuzhang1 (1.School of Mechanical Engineering, South China University of Technology, Guangzhou 510641......
and desorption properties for rhenium,while the kinetics and thermodynamics properties of adsorbing rhenium from the rhenium stock solution were systematically investigated.The kinetics investigations...Adsorption and desorption properties for rhenium using a kind of weak-base anion resinHong-Zhao Liu1,2,3,Bo Zhang2,3,Xiao-Jing Jing1,2,3,Wei Wang2,3,Li-Jun Wang11. Rare Metal and Metallurgy Materials......
Kinetics of acid-oxygen leaching of low-sulfur Ni-Cu matte at atmospheric pressure FAN Chuan-lin(范川林), LI Bin-chuan(李斌川), FU Yan(符 岩), ZHAI Xiu-jing(翟秀静) School of Materials... distribution of the matte on the kinetics of nickel extraction is presented in Fig.6. The extraction rate of nickel decreases with increasing the particle size. The faster rate of nickel extraction observed......
,but it significantly enhances the hydrogen absorption and desorption kinetics performance of alloys.Moreover,variation of milling time clearly affects the hydrogen storage properties of alloys.Hydrogen... by mechanical milling.Effects of Ni content and milling time on the gaseous hydrogen storage thermodynamics and dynamics of alloys were systematically investigated.The hydrogen desorption properties......
Hydrogen absorption of NdDyFeCoNbCuB sintered magnets罗建军1,2,De Rango P3,4,梅金娜1,4,胡锐1,李金山1,周廉11. State Key Laboratory of Solidification Processing,Northwestern Polytechnic University摘 要:Hydrogen absorption and desorption characteristics for high coercivity NdDyFeCoNbCuB sintered bulk magnets were studied,by differential scanning calorimetry(DSC......
J. Cent. South Univ. (2019) 26: 2998-3007 DOI: https://doi.org/10.1007/s11771-019-4231-3 Adsorption kinetics and thermodynamics of sodium butyl xanthate onto bornite in flotation SUN Qian-yu(孙乾予)1... was studied by adsorption kinetic and thermodynamic. The flotation results demonstrated that the recovery was the highest when pH was 9 in NaBX solution (4×10-5 mol/L). The adsorption kinetics showed......
kinetics curves. The phase composition was identified by XRD (Rigaku, Japan). The size distribution of the particles after 25 hydrogen absorption/ desorption cycles was investigated with a Malvern..., 2006, 426: 295-303. [6] FENG F, HAN J W, GENG M M, NORTHWOOD D O. Hydrogen desorption kinetics of LaNi4.7Al0.3 metal hydride electrode using potentiostatic measurements [J]. Solar Energy Mater......
Degradation of ethyl xanthate in flotation residues by hydrogen peroxideCHEN Xing-hua(陈兴华)1, HU Yue-hua(胡岳华)1 , PENG Hong(彭宏)2, Cao Xue-feng(曹学锋)1(1. School of Minerals Processing and Bioengineering... (EX) salt was the most widely used collector in sulfide mineral flotation and emission of flotation tailings with residual EX was harmful to environment. In this work, hydrogen peroxide (H2O2......