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Water-soluble thiosemicarbazide-imidazole derivative as an efficient inhibitor protecting P110 carbon steel from CO2 corrosion

Yi He (State Key Lab of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan, China and Department of Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan, China)
Ranran Yang (Department of Chemical Engineering, Southwest Petroleum University, Chengdu, China)
Yanqiu Zhou (Department of Chemical Engineering, Southwest Petroleum University, Chengdu, China)
Lan Ma (Department of Chemical Engineering, Southwest Petroleum University, Chengdu, China)
Lei Zhang (Department of Chemical Engineering, Southwest Petroleum University, Chengdu, China)
Zhao Chen (Department of Chemical Engineering, Southwest Petroleum University, Chengdu, China)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Publication date: 7 November 2016

Abstract

Purpose

The purpose of this paper is to adopt both the fragments of imidazole and thiosemicarbazide as reaction centers, to synthesize a water-soluble corrosion inhibitor named as thiosemicarbazide-imidazole derivative (TH-IM).

Design/methodology/approach

This paper presents potentiodynamic polarization tests, electrochemical impedance spectroscopy tests and morphology study of metal surface by scanning electron microscope and thermodynamic study.

Findings

In the aggressive condition of CO2 saturated Wt. NaCl solution at 333 K for 72 h with 400 ppm inhibitor dosage, the efficiency of inhibition increases approximately 98 per cent through the method of weight loss.

Originality/value

This paper finds a new corrosion inhibitor about TH-IM which has a good solubility in water.

Keywords

Acknowledgements

The authors gratefully acknowledge the financial support from Sichuan Province basic research plan project 2013JY0099 and the foundation of State Key Lab of Oil and Gas Reservoir Geology and Exploitation PLN0806.

Citation

He, Y., Yang, R., Zhou, Y., Ma, L., Zhang, L. and Chen, Z. (2016), "Water-soluble thiosemicarbazide-imidazole derivative as an efficient inhibitor protecting P110 carbon steel from CO2 corrosion", Anti-Corrosion Methods and Materials, Vol. 63 No. 6, pp. 437-444. https://doi.org/10.1108/ACMM-01-2015-1485

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Publisher

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Emerald Group Publishing Limited

Copyright © 2016, Emerald Group Publishing Limited

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