Use of a Metallic Complex Derived from Curcuma Longa as Green Corrosion Inhibitor for Carbon Steel in Sulfuric Acid

Florez-Frias, E. A.; Barba, Víctor; López-Sesenes, R.; Landeros-Martínez, Linda-Lucila; Ríos, Juan Pablo Flores-De los; Casales, M.

doi:10.1155/2021/6695299

Cited by 20 publications

(6 citation statements)

References 53 publications

(54 reference statements)

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“…However, the combination of AO (500ppm) and Zn 2+ (30ppm) has an IE of 93% and CR of 0.0127, making it the maximum IE for AO-Zn 2+ system. Therefore, the IE is increased and CR is also reduced, when the concentration of combined inhibitor (AO-Zn 2+ ) system is increased (30,40) . https://www.indjst.org/ Anodic reaction (28,41) : Fe → Fe 2+ + 2e − Cathodic reaction (41) :…”

Section: Weight-loss Methods For Ao-zn 2+ Systemmentioning

confidence: 99%

“…Thermodynamic parameters are computed to detemine the type of adsorption on the surface of CS. Adsorption of ethanolic extract of AO leaves has a spontaneous process (40) onto CS surface with physisorption (57) , as evidenced by the free energy of adsorption (∆G ads ) and heat of adsorption (q ads ) negative values (27,53) . ∆G ads have negative values of less than -20KJmol -1 , implying that the nature of adsorption is physisorption (30,53,(56)(57)(58)(59) for the investigative inhibitor system.…”

Section: Thermodynamic Studies On Adsorption Processmentioning

confidence: 99%

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Corrosion inhibition and thermodynamic studies on carbon steel in well water by ethanolic extract of Alpinia officinarum leaves (Lesser galangal)-Zn2+

Thirupathi¹,

Venkatraman²

2021

IJST

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Section: Weight-loss Methods For Ao-zn 2+ Systemmentioning

confidence: 99%

Section: Thermodynamic Studies On Adsorption Processmentioning

confidence: 99%

Corrosion inhibition and thermodynamic studies on carbon steel in well water by ethanolic extract of Alpinia officinarum leaves (Lesser galangal)-Zn2+

Thirupathi¹,

Venkatraman²

2021

IJST

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“…The formulation of various concentration of 500ppm PQ and 30ppm of Zn 2+ system gives the optimum inhibition efficiency from 31% to 92% and also corrosion rate decreased from 0.1249 to 0.0145. Therefore, it is evident that the inhibition efficiency increases with its concentration, which is due to the adsorption of the metallic complex on the carbon steel surface (38) . The fact that the metal surface area covered by the inhibitor surface coverage increases with its concentration supports the idea that the decrease in corrosion rate is due to the inhibitor adsorption on the carbon steel surface to form a protective corrosion product layer due to the existence of hetero cyclic compound is shown in Figure 1 (39) .…”

Section: Weight-loss Measurementmentioning

confidence: 99%

Corrosion inhibition behaviour on carbon steel in well-water by Ethanolic extract of Portulaca quadrifida (Chicken weed) leaves

Thirupathi¹,

Venkatraman²

2021

IJST

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Objectives: To evaluate the corrosion inhibition of an ethanolic extract of Portulaca quadrifida (PQ) leaves on the carbon steel surface in well-water by using a weight-loss study with various immersion periods, temperatures, and pH. The kinetic and thermodynamic parameters are calculated for various temperatures. Methods: The protective film has been analyzed by using SEM, EDX and AFM studies. The inhibition action of PQ extract was analyzed by potentiodynamic polarization study, the electrochemical impedance studies are used to the analysis the protective layer formed on the carbon steel surface. Findings: The maximum inhibition efficiency is found to be 92% for 500ppm of PQ and 30ppm of Zn 2+ ions at 303K. The synergistic effect exists between ethanolic extract of Portulaca quadrifida leaves and Zn 2+ ions by synergistic parameters. The ethanolic extract of PQ leaves acts as a mixed-type inhibitor. The activation energy (E a ) values indicate that the adsorption of PQ leaves extract on the carbon steel surface. The enthalpy of adsorption (∆H) values suggests that the reaction is endothermic. The free energy of adsorption (∆G ads ) values is negative and less than the -20KJmol -1 . The negative values of ∆S ads are confirmed to form an ordered stable layer of the inhibitor molecule on the carbon steel surface as well as a stable equilibrium between the adsorption and desorption processes. The adsorption isotherm is best fitted with the Langmuir model. Novelty: The ∆G ads values indicate that the adsorption of inhibitor on the carbon steel surface belongs to the physisorption as well as the adsorption layer has an electrostatic character. The adsorption process of the inhibitor is spontaneous. The thermodynamic parameters give a strong interaction between the inhibitor molecules and carbon steel surface. Four adsorption isotherms including Langmuir, El-Awady, Flory-Huggins, and Temkin models, investigate the mode of inhibition of PQ leaves extract.

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“…"Schiff bases possess the above features combined with their structure containing heteroatoms which make them effective potential corrosion inhibitors for steel, copper and aluminum" [11,12]. "Schiff bases are synthesized from primary amines and active carbonyl groups by condensation.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization and Electrochemical Studies on the Corrosion Inhibition Properties of Schiff Bases for Mild Steel in 1 M HCl Solution

Ozoemena

Boekom

Inemesit

2023

CSIJ

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Schiff bases (SBL1 and SBL2), non-toxic compounds were synthesized, characterized and investigated as alternative anticorrosive additives for inhibition of mild steel corrosion in I M HCl acid medium. Corrosion of the steel was monitored by Potentiodynamic Polarization (PDP), Linear Polarization Resistance (LPR), Electrochemical Impedance Spectroscopy (EIS) and Weight Loss (WL) techniques. The novel Schiff base ligands obtained were characterized by Ultraviolet-visible and Fourier-Transform Infrared Spectroscopy. The elemental analysis data for the Schiff base ligands were used to confirm the formula of SBL1 as C17H20N2O2 and SBL2 as C24H21N5O2. Fourier-Transform Infrared spectroscopy suggest that the formation of a complex film on the mild steel surface was due to the adsorption of SBL1 and SBL2. The adsorption process was spontaneous and consistent with the mechanism of physical adsorption as best approximated by the Langmuir adsorption isotherm. Maximum inhibition efficiency was obtained at maximum concentration of 100 ppm for both SBL1 and SBL2 with SBL2 possessing the higher inhibition efficiency (86.21%) more than SBL1 (76.92%). Effectiveness of SBL1 and SBL2 reduced with increase in time and progressed with increase in concentration of SBL1 and SBL2. PDP measurements showed that SBL1 and SBL2 acted as a mixed type inhibitor. EIS measurement reveals that the corrosion process was controlled by charge transfer process. Values of the inhibition efficacy obtained from the different techniques were comparable. SEM micrographs of mild steel surface indicated good surface protection of SBL1 and SBL2.

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Use of a Metallic Complex Derived from Curcuma Longa as Green Corrosion Inhibitor for Carbon Steel in Sulfuric Acid

Cited by 20 publications

References 53 publications

Corrosion inhibition and thermodynamic studies on carbon steel in well water by ethanolic extract of Alpinia officinarum leaves (Lesser galangal)-Zn2+

Corrosion inhibition and thermodynamic studies on carbon steel in well water by ethanolic extract of Alpinia officinarum leaves (Lesser galangal)-Zn2+

Corrosion inhibition behaviour on carbon steel in well-water by Ethanolic extract of Portulaca quadrifida (Chicken weed) leaves

Synthesis, Characterization and Electrochemical Studies on the Corrosion Inhibition Properties of Schiff Bases for Mild Steel in 1 M HCl Solution

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