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| Compounding of Cu-MOF Corrosion Inhibitor |
| Received:December 15, 2021 Revised:January 07, 2022 |
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| DOI：10.7643/issn.1672-9242.2022.03.012 |
| KeyWord:Cu-MOF compound thiourea hexamethylenetetramine |
| Author | Institution |
| ZHANG Xing |
Petroleum Engineering Technology Institute of Sinopec Shengli Oilfield, Dongying, , China |
| LIU Wei |
Petroleum Engineering Technology Institute of Sinopec Shengli Oilfield, Dongying, , China |
| LI Xia-qing |
Petroleum Engineering Technology Institute of Sinopec Shengli Oilfield, Dongying, , China |
| ZHANG Quan-sheng |
Petroleum Engineering Technology Institute of Sinopec Shengli Oilfield, Dongying, , China |
| FENG Lei-lei |
Petroleum Engineering Technology Institute of Sinopec Shengli Oilfield, Dongying, , China |
| GUAN Qing-qing |
Petroleum Engineering Technology Institute of Sinopec Shengli Oilfield, Dongying, , China |
| CHANG Feng |
Engineering Technology Management Center of Sinopec Shengli Oilfield, Dongying, , China |
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| Abstract: |
| Thepurpose of this paper is to explored the optimal compounding ratio by compounding Cu-MOF,thereby obtain better corrosion inhibition effects of Cu-MOF. The corrosion inhibition behavior change of Cu-MOF before and after compounded with thiourea and hexamethylenetetramine on Q235 carbon steel in 1 mol/L HCl medium was investigated by the means of static weight-loss coupon test, electrochemical measurements and surface morphology analysis. When 50 mg/L Cu-MOF was used alone, the corrosion rate of carbon steel was 2.83 g/(m2.h). After using thiourea and hexamethylenetetramine with Cu-MOF for compounding, the weight-loss corrosion rate of carbon steel in hydrochloric acid solution has decreased with varying degrees, to 1.28 and 1.14 g/(m2.h) respectively. The compounding of thiourea and hexamethylenetetramine with Cu-MOF showed good synergistic effect. The protective film formed on the surface of carbon steel was denser and the corrosion inhibition efficiency was significantly improved. |
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