| Influence of Mg^2＋ on Initial Stages of CaCO3 Scale Formed on Metal Surface |
| |
| 作者姓名： | CHENTao AnneNeville YUANMing-dong |
| |
| 作者单位： | [1]SchoolofMechanicalEngineering,UniversityofLeeds,Leeds,LS29,1T,UK [2]BakerPetrolite,12645W.AirportBoulevard,Sugarland,Texas,77478,USA |
| |
| 基金项目： | Supported by Baker Petrolite U SA |
| |
| 摘 要： | Magnesium ions, which exist in formation water and injection water under downhole conditions in the oil and gas production industry, are a key determinant in the CaCO3 scale formation. Many studies have focused their attention on the effect of magnesium on the kinetics, the morphology and the content of Mg in the Ca-CO3 scale. Little attention has been paid to the effect of Mg^2 on the initial stages of CaCO3 formation on a metal surface. In this study, an electrochemical technique was used to study the influence of Mg^2 on the ini-tial stages of CaCO3 scale formed on a metal surface. With this electrochemical technique, the reduction of the dissolved oxygen in an analysis solution is considered on the surface of a rotating disk electrode (RDE) un-der potentiostatic control. The rate of oxygen reduction on the surface of the RDE enables the extent of sur-face coverage of scale to be assessed. With this electrochemical technique, a new insight into the effect of Mg^2 on CaCO3 scale formed on a metal surface is given.
|
| 关 键 词： | 镁离子 碳酸钙 旋转圆盘电极 表面化学 |
| 收稿时间： | 2004-06-03 |
Influence of Mg2+ on Initial Stages of CaCO3 Scale Formed on Metal Surface |
| |
| CHENTao AnneNeville YUANMing-dong.Influence of Mg2+ on Initial Stages of CaCO3 Scale Formed on Metal Surface[J].Chemical Research in Chinese University,2004,20(4):381-385. |
| |
| Authors: | CHEN Tao Anne Neville YUAN Ming-dong |
| |
| Institution: | 1. School of Mechanical Engineering, University of Leeds, Leeds, LS2 9JT, UK;
2. Baker Petrolite, 12645 W. Airport Boulevard, Sugarland, Texas, 77478, USA |
| |
| Abstract: | Magnesium ions, which exist in formation water and injection water under downhole conditions in the oil and gas production industry, are a key determinant in the CaCO3 scale formation. Many studies have focused their attention on the effect of magnesium on the kinetics, the morphology and the content of Mg in the CaCOs scale. Little attention has been paid to the effect of Mg2 on the initial stages of CaCO3 formation on a metal surface. In this study, an electrochemical technique was used to study the influence of Mg2 on the initial stages of CaCO3 scale formed on a metal surface. With this electrochemical technique, the reduction of the dissolved oxygen in an analysis solution is considered on the surface of a rotating disk electrode (RDE) under potentiostatic control. The rate of oxygen reduction on the surface of the RDE enables the extent of surface coverage of scale to be assessed. With this electrochemical technique, a new insight into the effect of Mg2 on CaCO3 scale formed on a metal surface is given. |
| |
| Keywords: | Calcium carbonate Magnesium Scale Levich analysis Rotating disk electrode |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《高等学校化学研究》浏览原始摘要信息 |
| 点击此处可从《高等学校化学研究》下载免费的PDF全文 |
|
