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ability of CaTiO3-Fex exhibited a significant increase with increasing Fe content. Photocatalytic degradation of methylene blue over CaTiO3-Fex followed the first-order reaction kinetics. Based on changes of the concentration of methylene blue and its degradation kinetics, CaTiO3-Fe0.474% has shown to have optimal photocatalytic activity. The degradation rate of methylene blue over CaTiO3-Fe0.474......
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的有效方法是改变MnO2 产物层的结构 , 使其多孔疏松 , 以此增大氧气的扩散系数. 关键词: 碳酸锰;热解;动力学; 中图分类号: TF792 收稿日期:1999-05-04 Kinetics of thermal decomposition of MnCO3 Abstract: The kinetics on the thermal decomposition of MnCO 3 was investigated. The parameters in the kinetic equations were worked out. The results showed that the decomposition reaction of MnCO 3 follows......
-phase alloy with large amount of Nb precipitates. On the basis of thermodynamics and kinetics of oxidation, the effect of Nb alloying element on the oxidation behavior of NiTi-based alloys was discussed. Key words: NiTi; NiTiNb; high-temperature oxidation; kinetics 1 Introduction NiTi based intermetallics are attractive functional materials because of their mechanical properties, good corrosion......
; Equilibrium and kinetics... models were applied to describing the equilibrium isotherms, and isotherm constants were determined. The kinetics of the adsorption with respect to the initial Ca(Ⅱ) ions concentration, temperature......
products are mostly reduced iron, rutile, reduced rutiles, Ti3O5 and pseudobrookite solid solution. The reduction kinetics was also discussed. The results show that the reduction temperature is a key factor to control reaction rate. Key words: Bama ilmenite; reduction; thermogravimetry; impurity; kinetics ......
; Abstract: The isothermal oxidation behavior of a Ti3Al-based alloy (Ti-24Al-14Nb-3V-0.5Mo-0.3Si, molar fraction, %) at 700- 1 000 ℃ in air was investigated. The oxidation kinetics... resistance; Ti3Al-based intermetallic alloy; oxidation kinetics ......
-Verlag GmbH Germany, part of Springer Nature 2020 Abstract: Silver ion can be useful in improving chalcopyrite bioleaching efficiency. In this work, leaching kinetics of this process was investigated... potential is much higher than the proposed appropriate range (380-480 mV vs Ag/AgCl) with the solid waste added. There is a positive correlation between temperature and copper extraction rate. The kinetics......
; reduction; kinetics model 冶炼不锈钢时产生大量粉尘,尘中含有多种重金属,若将其填埋弃置会污染环境,而进行固化处理又导致金属资源流失[1,2].采用直接还原新工艺将粉尘与碳粉混合制粒后返回炼钢炉,在不锈钢冶炼过程中,还原尘中有价金属并以合金元素回收于钢液中,同时可有效地保护环境[3-6].采用不锈钢冶炼粉尘直接还原时发现尘中的铁和镍可还原回...-isothermal reduction kinetics of EAF dust-based pellets[J]. CIM Bulletin, 2001, 94(1049): 64-70. [9]彭兵, 张传福, 彭及,等. 电弧炉粉尘等温还原的动力学研究[J]. 安徽工业大学学报, 2001, 18(1): 13-17. PENG Bing, ZHANG Chuan-fu, PENG......
:A Growth kinetics of ZnS particle made by homogeneous precipitation TANG Jian-cheng1, DENG Yi-da2, LI Jun1, LIU Wen-sheng2, HE Yue-hui2 (1.School of Materials Science and Engineering, Nanchang... coefficient depends on temperature, concentration and pH value and increases with the increases of temperature, concentration and pH value. Key words: ZnS; homogeneous precipitation; kinetics ......
