5,10,15,20-Tetra(4-pyridyl)-21H,23H-porphine as an effective corrosion inhibitor for N80 steel in 3.5% NaCl solution
Ambrish SinghDepartment of Chemistry, School of Civil Engineering, LFTS, Lovely Professional University, Phagwara, Punjab 144402, IndiaEno E. EbensoDepartment of Chemistry, School of Mathematical & Physical Sciences, North-West University (Mafikeng Campus), Private Bag X2046, Mmabatho 2735, South AfricaM.A. QuraishiYuanhua LinState Key Laboratory of Oil and Gas Reservoir Geology and Exploitation (Southwest Petroleum University), Chengdu, Sichuan 610500, China
2014en
ABI
Abstract
The inhibition behavior of 5,10,15,20-Tetra(4-pyridyl)-21H,23H-porphine (T4PP) as an environmentbenign corrosion inhibitor for N80 steel was investigated in 3.5 wt.% NaCl solution by means of potentiodynamic polarization, AC impedance, and quantum chemical calculations. The results showed that 5,10,15,20-Tetra(4-pyridyl)-21H,23H-porphine can inhibit the corrosion of N80 steel. The adsorption of T4PP on the N80 steel surface obeyed the Langmuir adsorption isotherm. The quantum chemical calculations were applied to elucidate adsorption pattern of inhibitor molecules on steel surface.
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