Chemically modifiedguargumandethylacrylate composite asanewcorrosioninhibitorfor reduction inhydrogenevolutionandtubularsteel corrosion protectioninacidicenvironment
Citation
AmbrishSinghaK.R.AnsaribM.A.QuraishibSavaşKayacSultanErkand a School of New Energy and Materials, Southwest Petroleum University, Chengdu, Sichuan, 610500, PR China b Center of Research Excellence in Corrosion, Research Institute, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia c Sivas Cumhuriyet University, Health Services Vocational School, Department of Pharmacy, Sivas, 58140, Turkey d Yıldızeli Vocational School, Chemical and Chemical Company Technology, Cumhuriyet University, Sivas, TurkeyAbstract
The paper deals with the synthesis of Guar gum and ethyl acrylate (GG-EEA) composite. The synthesized natural polysaccharide composite was used as a corrosion inhibitor to reduce hydrogen evolution and P110 steel corrosion protection in 15% HCl (Hydrochloric acid). The primary corrosion techniques like weight loss, electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization (PDP) was used to analyze the corrosion inhibition process. The PDP proposed that GG-EEA composite is a mixed-type corrosion inhibitor and inhibits corrosion by blocking the active sites presenting over the metal surface. The corrosion inhibition performance of GG alone is 77.5%, and that of GG-EEA is 92.3% at 500 mg/L. The adsorption of GG-EEA onto P110 steel is spontaneous and mixed type, i.e., both physical and chemical. The conformation of GG-EEA molecule adsorption was done using a scanning electron microscope (SEM), Energy dispersive x-ray spectroscopy (EDX), Atomic force microscopy (AFM), and X-ray photoelectron spectroscopy studies. Density functional theory (DFT) analysis was done to explore the active sites over the inhibitor in metal-inhibitor interaction. Molecular dynamic simulation (MD) simulations study reveals that GG-EEA has more adsorption capacity than GG alone.
Source
international journal of hydrogen energyVolume
46Issue
14URI
https://www.sciencedirect.com/science/article/pii/S0360319920346978https://hdl.handle.net/20.500.12418/13045