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Citation: GAO Yan-Min, CHEN Jia-Jian, LEI Liang-Cai, YANG Huai-Yu, CAO Dian-Zhen, ZHU Ying-Jian, WU Wei-Tao. Evaluation of Corrosion Inhibitors Used in HighTemperature Naphthenic Acid Environment[J]. Chinese Journal of Applied Chemistry, ;2000, 17(1): 63-65. shu

Evaluation of Corrosion Inhibitors Used in HighTemperature Naphthenic Acid Environment

1.
1. State Key Laboratory of Corrosion and Protection of Metal, Institute of Corrosion and Protection of Metal, Chinese Academy of Sciences, Shenyang 110015;
2.
2. Petrochemical Department, Fushun Petroleum Institute, Fushun

Received Date: 14 June 1999
Available Online: 20 October 1999

Five corrosion inhibitors have been evaluated in high-temperature naphthenic acid environment: triethyl phosphate(A), dioctylphosphoric acid (B), tripheny lphosphate (C), tetraethylenepentamine(D)and 1-aminoethyl-2-dodecylimidazoline(E). It is found that A, B and C have good inhibitory property and the corrosion inhibitory efficiency increases linearly with the hydrophilicity of inhibitor molecule; poly amine compound, being a corrosion inhibitor, reacts also with naphthenic acid to produce azole or amide compounds, which also behave as inhibitors.
- naphthenic acid,
- high temperature corrosion inhibitor,
- organic phosphate,
- polyamine compound
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