Enhancing the inhibition and adsorption performance of SABIC iron corrosion in sulfuric acid by expired vitamins. Experimental and computational approach

Abstract

The inhibition potency of expired thiamine or vitamin B1 (VB1) and riboflavin or vitamin B2 (VB2) against SABIC iron corrosion in 0.5 M H2SO4 solutions was investigated using chemical and electrochemical techniques.

Efficient corrosion inhibition by sugarcane purple rind extract for carbon steel in HCl solution: mechanism analyses by experimental and in silico insights

“…12a , the regression coefficients ( r 2 ) close to unity imply the validity and feasibility of the Langmuir isotherm. 35 Furthermore, the best fit of the Langmuir model also reveals that the active sites on the metal surface are energetically equivalent, and the adsorption of SPRE follows monolayer adsorption. 47 K ads provides the adsorption strength for the inhibitor on the metal surface, which can be derived from the intercept of the fitted lines in Fig.…”

“…5a , all the Nyquist curves exhibit an irregular semicircle in the high frequency domain, which can be assigned to the heterogeneous nature of the solid/liquid interface. 35 Besides, the single suppressed capacitive loop also indicates that the corrosion of C-steel in HCl solution is principally governed by the charge transfer mechanism without and with SPRE. This is supported by the single maximum of the phase angle presented in Fig.…”

Appraisal of synthetic cationic Gemini surfactants as highly efficient inhibitors for carbon steel in the acidization of oil and gas wells: an experimental and computational approach

“… 53 In this new research, the local selectivity of cationic Gemini surfactant was calculated using the Fukui functions (( f i − ; electrophilic attack) and ( f i + ; nucleophilic attack)) with the most condensed functions present at the most active sites (atoms). 54 Table 7 groups the various local activity sites represented by the most appropriate atoms that have the highest density representing the nucleophilic (acceptor) and electrophilic (donor) electron centers. As displayed in Table 7 , the molecule investigated under the cationic form shows a more outstanding attractive character.…”

Investigation of the anticorrosion and adsorption properties of two polymer compounds on the corrosion of SABIC iron in 1 M HCl solution by practical and computational approaches

“…Generally, organic compounds, especially those containing some hetero atoms in their structure are most commonly utilized as corrosion inhibitors for iron and steels in acidic media. [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] The inhibition efficiency of these compounds relies on the concentration of the acidic solution, the nature of the metal or alloy used, the chemical composition of the additives and the capability to adsorb on the metal surface.…”