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Synergic Mechanism of an Organic Corrosion Inhibitor for Preventing Carbon Steel Corrosion in Chloride Solution刘志勇1,YU Lei1,LI Qingzhong21. School of Civil Engineering, Yantai University2. School.... The synergic mechanism of the organic corrosion inhibitors(OCIs) was studied with quantum chemical calculations. It is found that the DMEA forms a quaternary ammonium salt with the proton in carboxylic acid......
Chloride diffusivity in flexural cracked Portland cement concrete and fly ash concrete beamsLU Chun-hua(陆春华), CUI Zhao-wei(崔钊玮), LIU Rong-gui(刘荣桂), LIU Qi-dong(刘奇东) (Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang 212013, China)Abstract:In order to examine the effect of load-induced transverse cracks on the chloride penetration in flexural concrete beams, two different......
Thermodynamics of solubility of Cu2(OH)2CO3in ammonia-ammonium chloride-ethylenediamine(En)-water system LIU Wei(刘 维), TANG Mo-tang(唐谟堂), TANG Chao-bo(唐朝波), HE Jing(何 静), YANG Sheng... the evaporating rate of ammonia and increase the solubility of copper in the solution, ethylenediamine was added into the ammonia-ammonium chloride system to leach the copper-containing oxide ores......
A mathematical model for electrochemical chloride removal from marine cast iron artifacts Weizhen OUYANG1,Ning WANG2,Xia CAO2 (1.Guilin Air Force Academy,Guilin 541003,China;2.Beijing University of Aeronautics and Astronautics,Beijing 100083,China) Abstract:The aim of this article was to theoretically study diffusion and migration of chlo-ride ions during electrochemical chloride removal......
.当氯 化铵浓度超过3 mol/L时,所有金属离子的浸出率没有显著的提高.综合考虑,氯化铵的浓度为3 mol/L为宜. 图5 氯化铵浓度对金属浸出率的影响 Fig. 5 Influence of ammonium chloride concentration on leaching rate of metals 采用盐酸-氯化铵溶液体系浸出红土镍矿...), 2010, 41(5): 1691-1697. Selectively leaching valuable metals from laterite nickel ore by ammonium chloride LI Jin-hui1, XU Zhi-feng1, GAO Yan2, LI De-shun1, LIU Ye1, ZHAO Chun-die1 (1. School......
Preparation of Fine Spherical Particle Sized Ceria by Precipitation Method with Ammonium Bicarbonate Cui Dali1,Zhang Guocheng1,Zhu Zhaowu1,Zhang Shunli1,Long Zhiqi1 (1.Advanced Materials Co. Ltd., Beijing General Research Institute of Nonferrous Metals, Beijing 100088, China) Abstract:Fine spherical particle sized ceria (CeO2) was prepared by homogeneous precipitation method with ammonium......
One-pot synthesis of cyclic aldol tetramer and a, β-unsaturated aldol from linear aldehydes using quaternary ammonium combined with sodium hydroxide as catalystsXU Hai-feng(许海峰)1, 2, ZHONG Hong(钟宏)1...-transfer catalyst (PTC), quaternary ammonium, combined with sodium hydroxide as catalysts was investigated. Butanal was subjected for detail investigations to study the effect of parameters......
聚合硅酸解聚-硅钼蓝分光光度法测定矿石中二氧化硅张建珍1,王锦荣1,刘家齐1(1.山西省太原市冶金地质总局第三地质中心实验室)摘 要:针对矿石中的二氧化硅通常含量较高,制取母液时大量硅酸产生聚合的问题,建立了以氟化铵-氯化铝作为聚合硅酸(nH4SiO4)解聚剂,钼酸铵作为显色剂和抗坏血酸-盐酸羟胺作为还原剂测定高含量二氧化硅的的分光光度法.实验表明,室温25℃时,在HCl浓度为0.25~0.35 mol/L,氟化铵-氯化铝混合液体积为10 mL,反应时间为25 min时,聚合硅酸(nH4SiO4)可被完全解聚生......
, YANG Jian-guang. Thermodynamics of solubility of Cu2(OH)2CO3 in ammonia-ammonium chloride-ethylene- diamine(En)-water system [J]. Transactions of Nonferrous Metals Society of China, 2010, 20(2... of Technology, 2009, 16(6): 936-941. [18] LIU Wei, TANG Mo-tang, TANG Chao-bo, HE Jing, YANG Sheng-hai, YANG Jian-guang. Dissolution kinetics of low grade complex copper ore in ammonia-ammonium chloride......
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