Surface acid-base characteristics of natural manganese mineral particles
文献类型：期刊论文
| 作者 | Liu, RX; Tang, HX |
| 刊名 | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
 |
| 出版日期 | 2002 |
| 卷号 | 197期号:2015-01-03页码:47-54 |
| 关键词 | natural manganese mineral acid base characteristic potentiometric titration constant capacitance model |
| 英文摘要 | In this paper, the acid-base characteristics of natural manganese mineral collected from Guangxi Province, China, are investigated by potentiometric titration and solubility experiments. The constant capacitance surface complexation model is used to interpret experimental data, The calculations are performed with the least-squares FITEQL program 2,0. All the model parameters are determined on the base of the experimental data. This study indicates that the proton reactions in the acidic blank can be successfully described by those of Mn2+ in solution. To explain the surface acid-base behavior of manganese mineral particle, two protonation models are proposed Model I: dropMnOH(2)(+) <----> dropMnOH + H+, K-a1(int) = 3.52-3.60 double bondMnOH <----> MnO- + H-4, K-a2(int) = 4.04-4.88 Model II: dropMnOH <----> dropMnO(-) +H+, K-a(int) = 5.06 - 5.62 Optimization results indicate that these two models can simulate the experimental results very well. The applicability of the constant capacitance model (CCM) in describing the surface reaction of natural manganese mineral is further verified. (C) 2002 Elsevier Science B.V. All rights reserved. |
| 研究领域[WOS] | Chemistry |
| WOS记录号 | WOS:000173154500006 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/23942]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Liu, RX,Tang, HX. Surface acid-base characteristics of natural manganese mineral particles[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2002,197(2015-01-03):47-54. |
| APA | Liu, RX,&Tang, HX.(2002).Surface acid-base characteristics of natural manganese mineral particles.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,197(2015-01-03),47-54. |
| MLA | Liu, RX,et al."Surface acid-base characteristics of natural manganese mineral particles".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 197.2015-01-03(2002):47-54. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。