Influence of three Organic Phosphonates on Calcite Crystal Growth

被引：6
作者：
Chen, Chunyu [1 ]
Xia, Mingzhu [1 ]
Wang, Fengyun [1 ]
机构：
[1] Nanjing Univ Sci & Technol, Inst Ind Chem, Nanjing 210094, Peoples R China
来源：
MATERIALS PROCESSING TECHNOLOGIES, PTS 1 AND 2 | 2011年 / 154-155卷
关键词：
pH curve method; calcite; phosphonates; molecular dynamic simulation; INORGANIC INTERFACE; FRAMEWORK; CRYSTALLIZATION;
D O I：
10.4028/www.scientific.net/AMR.154-155.437
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Calcite is a common scale in water cooling systems treated and controlled with Organic phosphonates. The effect of three phosphonic acids (ethylene diamine tetra(methylene phosphonic acd), EDTMP; hexamethylene diamine tetra(methylene phosphonic acd), HDTMP; and diethylene triamine penta(methylene phosphonic acd), DTPMP) on the growth of the calcite has been investigated by pH curve method(pHCM). Experimental data obtains by pH value measurement of Ca(HCO3)(2) supersaturated solution before and after precipitation. Besides, molecular dynamic simulations of the interaction of the phosphonic acids with the calcite(104) indicate the inhibitor effectiveness: EDTMP< DTPMP< HDTMP according to the difference in the carbon chain between nitrogen atoms. This is in agreement with the pHCM measurements.
引用
收藏
页码：437 / 442
页数：6
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