Mechanism and Phenomenology of Organic Inhibitors

Trabanelli, G.; Carassiti, V.

doi:10.1007/978-1-4615-8252-6_3

Cited by 101 publications

(43 citation statements)

References 48 publications

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“…From the Table-2, it can be observed that with increase in immersion period the inhibition efficiency of gum exudates of Azadirachta indica increased upto 4 h which is indicative of strong adsorption of gum exudates of Azadirachta indica upon the carbon steel surface ensuing shielding deposit. It is suggestive of chemical adsorption when there is increase in inhibition efficiency with increase in time [28]. In the present case, efficiency of the inhibitor rises until 4 h. The efficiency of the inhibitor first increases with the immersion time, reaching a maximum at 4 h and showed a decrease with further increase in immersion time.…”

Section: Weight Loss Measurementssupporting

confidence: 49%

Mitigation of Acid Corrosion on Carbon Steel by Naturally Occurring Gum Exudate

Manickam¹,

Dheenadhayalan²,

Jaganathan³

2018

Asian J. Chem.

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Gum exudates of Azadirachta indica (GAI) was tested as corrosion inhibitor for carbon steel in 1 N H2SO4 by means of different techniques viz., gravimetric experiments, electrochemical polarization and impedance studies, IR and SEM techniques. Nature of adsorption is reported and it follows Langmuir isotherm. Polarization method indicated mixed mode behaviour of the inhibitor. AC impedance studies supported mitigation effects of gum exudates of Azadirachta indica. IR and SEM studies reveal the protection of carbon steel through adsorption.

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Section: Weight Loss Measurementssupporting

confidence: 49%

Mitigation of Acid Corrosion on Carbon Steel by Naturally Occurring Gum Exudate

Manickam¹,

Dheenadhayalan²,

Jaganathan³

2018

Asian J. Chem.

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“…Chemical adsorption has a higher adsorption energy than physical adsorption and, hence, usually is irreversible. It takes place more slowly than physisorption and the temperature dependence shows higher inhibition efficiencies at higher temperatures [32][33][34][35]. where v is the size ratio representing the number of water molecules replaced by one molecule of organic adsorbate.…”

Section: Introductionmentioning

confidence: 99%

Inhibitive action of gramine towards corrosion of mild steel in deaerated 1.0M hydrochloric acid solutions

et al. 2012

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a b s t r a c tThe effect of addition of gramine on mild steel dissolution in deaerated 1.0 M hydrochloric acid was studied through potentiodynamic polarisation curves, electrochemical impedance spectroscopy and gravimetric measurements in the temperature range from 25°C to 55°C. Gramine was found to shift the corrosion potentials towards less noble values and decrease both dissolution of mild steel and hydrogen evolution reaction. Gramine did not affect the corrosion reaction mechanism (blocking effect). Results obtained from the several measurement techniques were in good agreement and revealed good inhibition efficiencies in the concentration range (0.75 mM Ä 7.5 mM) particularly at higher concentrations.

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“…In acidic solution it exists predominantly in the thione [35,36] form. This is supported by the presence of a band at 3113 cm MBTH is known to form a thin polymeric film [37] on Cu forming a complex of the type [Cu (1) BTH] n thus yielding high inhibitor efficiency [38].…”

Section: Volume 14mentioning

confidence: 96%

Inhibition of Brass Corrosion in Acid Medium Using Thiazoles

Taha

Mohamed

Khalil

et al. 2013

ILCPA

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Brass as an alloy composed mainly of copper is great industrial uses such as heat exchangers and similar other facility due to its good thermal properties. Due to the presence of the considerable ratio of zinc the alloy suffers from zinc dissolution or dezincification. Dezincification rate increases with the increase in the ratio of zinc in the alloy. In this study benzothiazole (BTH) and its substituent's 2-methylbenzothiazole (MeBTH), 2-aminobenzothiazole (ABTH), 2-mercaptobenzothiazole (MBTH) and 2-phenylbenzothiazole (PhBTH) have been used as corrosion inhibitors for α-brass in stirred 0.1 M HClO 4 . The methods of investigation include weight loss, Tafel and linear polarizations and electrochemical impedance spectroscopy. The order of inhibition efficiency (% E) was calculated and the values obtained has indicated the sequence of inhibition efficiency was found to be BTH < MeBTH < ABTH < PhBTH < MBTH. The calculated values of thermodynamic parameters support this order. The inhibitors were found to suppress the corrosion rate by the formation of films which were identified by IR, SEM and EDAX techniques.

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Mechanism and Phenomenology of Organic Inhibitors

Cited by 101 publications

References 48 publications

Mitigation of Acid Corrosion on Carbon Steel by Naturally Occurring Gum Exudate

Mitigation of Acid Corrosion on Carbon Steel by Naturally Occurring Gum Exudate

Inhibitive action of gramine towards corrosion of mild steel in deaerated 1.0M hydrochloric acid solutions

Inhibition of Brass Corrosion in Acid Medium Using Thiazoles

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