ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Preparation of new nanocomposites and evaluation of their efficiency as corrosion inhibitors in the oil industry

Naeem Abdulsada Basheer, Ali Abdulkhabeer Ali, Raed H. Allawi, and Abdulateef A. Mashaf

Ministry of Education - Thi-Qar General Directorate of Education, Nasiriyah, Iraq

E-mail: r.allawi1308d@coeng.uobaghdad.edu.iq

Received: 29 July 2022  Accepted: 12 November 2022

Abstract:

Corrosion problems in surface facilities are one of the most critical challenges of the oil industry. Recently, there has been an increase in new corrosion inhibitors, particularly nanocomposite inhibitors. This study aims to prepare a novel nanocomposite TiO₂·B₂O₃-[TBID] as a corrosion inhibitor and investigate its effect on carbon steel (CS.45). This type of alloy was chosen, and the environmental conditions are similar to the conditions of the facilities of Halfaya oilfield in southern Iraq. Analytical techniques diagnosed the prepared nanocomposite, including X-ray diffraction, Energy dispersive X-ray atomic force microscopy technique, field emission scanning electron microscope, transmission electron microscope, FT-IR spectra and nuclear magnetic resonance spectroscopy 1H-NMR. The efficiency of the prepared corrosion inhibitor was evaluated using an electrochemical corrosion test cell (Tafel plots), and the working electrode was specimens of carbon steel (CS.45) at different inhibitor concentrations of 100, 200, 300, 400, and 500 ppm in (1 M) HCl solution at temperature 35 °C. The highest inhibition efficiency (IE%), 99.91%, was at a concentration of 100 ppm of TiO₂·B₂O₃-[TBID] inhibitor in an acidic medium.

Keywords: Nanocomposite; Corrosion inhibitor; Electrochemical corrosion test cell; TiO2·B2O3-[TBID]

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-022-02591-5

Chemical Papers 77 (3) 1655–1667 (2023)