scholarly journals Progress on pharmaceutical drugs, plant extracts and ionic liquids as corrosion inhibitors

Heliyon ◽  
2019 ◽  
Vol 5 (2) ◽  
pp. e01143 ◽  
Author(s):  
Lekan Taofeek Popoola
Keyword(s):  
Ionic Liquids ◽  
Plant Extracts ◽  
Corrosion Inhibitors ◽  
Pharmaceutical Drugs

Ionic liquids with two typical hydrophobic anions as acidic corrosion inhibitors

2018 ◽  
Vol 269 ◽  
pp. 886-895 ◽  
Author(s):  
Yangyang Guo ◽  
Zhihao Chen ◽  
Yuwei Zuo ◽  
Yun Chen ◽  
Wenzhong Yang ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Corrosion Inhibitors ◽  
Acidic Corrosion

scholarly journals Greener Approach towards Corrosion Inhibition

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Neha Patni ◽  
Shruti Agarwal ◽  
Pallav Shah
Keyword(s):  
Heavy Metals ◽  
Amino Acids ◽  
Plant Extracts ◽  
Corrosion Inhibitors ◽  
Organic Dyes ◽  
Plant Origin ◽  
Toxic Compounds ◽  
Green Inhibitors ◽  
Protective Films ◽  
Organic Corrosion Inhibitors

Corrosion control of metals is technically, economically, environmentally, and aesthetically important. The best option is to use inhibitors for protecting metals and alloys against corrosion. As organic corrosion inhibitors are toxic in nature, so green inhibitors which are biodegradable, without any heavy metals and other toxic compounds, are promoted. Also plant products are inexpensive, renewable, and readily available. Tannins, organic amino acids, alkaloids, and organic dyes of plant origin have good corrosion-inhibiting abilities. Plant extracts contain many organic compounds, having polar atoms such as O, P, S, and N. These are adsorbed on the metal surface by these polar atoms, and protective films are formed, and various adsorption isotherms are obeyed. Various types of green inhibitors and their effect on different metals are mentioned in the paper.

Benzalkoniumchloride ionic liquids as novel corrosion inhibitors for carbon steel in formation water

2021 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
M deyab ◽  
Noha Bagato ◽  
Rafa Mohareb ◽  
Y Moustafa ◽  
R Nessim ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Carbon Steel ◽  
Corrosion Inhibitors ◽  
Formation Water

Versatile 4, 6-dimethyl-2-mercaptopyrimidine based ionic liquids as high-performance corrosion inhibitors and lubricants

2019 ◽  
Vol 284 ◽  
pp. 577-585 ◽  
Author(s):  
Yi Li ◽  
Songwei Zhang ◽  
Qi Ding ◽  
Baofeng Qin ◽  
Litian Hu
Keyword(s):  
Ionic Liquids ◽  
High Performance ◽  
Corrosion Inhibitors

scholarly journals Corrosion Inhibition Performances of Imidazole Derivatives-Based New Ionic Liquids on Carbon Steel in Brackish Water

2020 ◽  
Vol 10 (20) ◽  
pp. 7069
Author(s):  
Megawati Zunita ◽  
Deana Wahyuningrum ◽  
Buchari ◽  
Bunbun Bundjali ◽  
I Gede Wenten ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Carbon Steel ◽  
Corrosion Inhibition ◽  
Brackish Water ◽  
Corrosion Inhibitors ◽  
Electrochemical Impedance ◽  
Nacl Solution ◽  
Adsorption Mechanisms ◽  
Water Media ◽  
Steel Surfaces

In this study, imidazole derivative-based new ionic liquids were investigated as corrosion inhibitors. These new ionic liquids (ILs) are 1,3-dipropyl-2-(2-propoxyphenyl)-4,5-diphenylimidazole iodide (IL1) and 1,3-dibutyl-2-(2-butoxyphenyl)-4,5-diphenylimidazole iodide (IL2). The corrosion inhibition effects of two new ILs were observed on carbon steel in brackish water media (1% NaCl solution). Carbon steel coupons were exposed to 1% NaCl solution with various concentrations of ILs. Corrosion inhibition effects were tested by the electrochemical impedance spectroscopy (EIS) method and the Tafel method at various temperatures ranging from 25 °C to 55 °C. The results showed that ILs have potential as corrosion inhibitors and the adsorption mechanisms of IL1 and IL2 on carbon steel surfaces were also determined, which followed the Langmuir adsorption isotherm model. Acquisition of ∆Gads values of IL1 and IL2 were −35.04 and −34.04 kJ/mol, respectively. The thermodynamic data of the ILs show that semi-chemical and or physical adsorptions occurred on carbon steel surfaces.

Corrosion inhibition characteristics of Thymus vulgaris, Xylopia aethiopica and Zingiber officinale extracts on mild steel in H2SO4 solutions

2014 ◽  
Vol 43 (6) ◽  
pp. 357-364 ◽  
Author(s):  
P.C. Okafor ◽  
E.A. Apebende
Keyword(s):  
Mild Steel ◽  
Plant Extracts ◽  
Corrosion Inhibitors ◽  
Physical Adsorption ◽  
Zingiber Officinale ◽  
Thymus Vulgaris ◽  
Content Type ◽  
Adsorption Sites ◽  
Ethanol Extracts ◽  
Xylopia Aethiopica

Purpose This paper aims to evaluate the inhibitive action of the corrosion of mild steel in sulphuric acid solutions by ethanol extracts of Thymus vulgaris (TYV), Xylopia aethiopica (XYA) and Zingiber officinale (ZGO) as eco-friendly and non-toxic mild-steel corrosion inhibitors in H2SO4 solutions. Design/methodology/approach Ethanol extracts of TYV leaves, XYA fruits and ZGO roots were used as inhibitors in various corrosion tests. Gravimetric and gasometric techniques were used to characterize the mechanism of inhibition. Findings Results indicate that the extracts inhibit the corrosion process efficiently. Inhibition efficiency was found to increase with an increase in extract concentration and decrease with an increase in temperature. Inhibition efficiencies followed the trend TYV > ZGO > XYA. Thermodynamic considerations revealed that the energy of activation increased in the presence of the plant extracts. Adsorption of the plant extracts on mild steel surface occurred spontaneously, and Ea and ΔGads values confirm a physical adsorption processes. Phytochemical studies showed the presence of saponoids, flavonoids and polyphenols whose attachment to adsorption sites on the metal surface is responsible for the inhibition process. Experimental data fit the Langmuir adsorption isotherm. Practical implications The plant extracts can be used in chemical cleaning and picking processes. Originality/value The research provides information on the possible use of the ethanol extracts from TYV leaves, XYA fruits and ZGO roots as sources of cheap, eco-friendly and non-toxic corrosion inhibitors.

Tribological and corrosive properties of ionic liquids containing triazole functional groups

2015 ◽  
Vol 67 (3) ◽  
pp. 210-215 ◽  
Author(s):  
Jinlong Li ◽  
Dongmei Li ◽  
Feng Zhou ◽  
Dapeng Feng ◽  
Yanqiu Xia ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Friction Coefficient ◽  
Corrosion Inhibitors ◽  
Elevated Temperatures ◽  
Single Component ◽  
Wear Volume ◽  
Wear Property ◽  
Content Type ◽  
Base Oils ◽  
Sulfur Containing

Purpose – The aim of this paper was to inhibit the serious corrosion of conventional ionic liquids, a series of new ionic liquids (ILs) containing the triazole functionality, as the anti-corrosion groups were synthesized in this work. Design/methodology/approach – It is well known that nitrogen and sulfur containing organic compounds have been traditionally used as corrosion inhibitors. Among them, triazole derivatives are most often used as corrosion inhibitors. To alleviate the corrosion of the ILs and further improve the anti-wear property, the authors prepared a series of imidazolium ILs modified with the triazole functionality in the present study. Findings – The corrosion behavior of the ILs was evaluated with the iron disk corrosion test and their tribological properties were investigated on an Optimol SRV IV oscillating friction and wear tester at elevated temperatures. The results showed that the ILs with the triazole functionality could effectively reduce the corrosion and exhibit a smaller friction coefficient and wear volume than the unmodified counterpart. The ILs containing the triazole functionality can be used as the single component anti-corrosion base oils even at elevated temperatures. Originality/value – The results showed that the ILs with the triazole functionality could effectively reduce the corrosion and exhibit a smaller friction coefficient and wear volume than the unmodified counterpart. The ILs containing the triazole functionality can be used as the single component anti-corrosion base oils even at elevated temperatures.

scholarly journals Cation Effect in the Corrosion Inhibition Properties of Coumarate Ionic Liquids and Acrylic UV-Coatings

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2611
Author(s):  
Esther Udabe ◽  
Anthony Sommers ◽  
Maria Forsyth ◽  
David Mecerreyes
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Polymer Coating ◽  
Corrosion Inhibitors ◽  
Electrochemical Impedance ◽  
Polymer Coatings

Chromate free corrosion inhibitors are searched for to mitigate the economic loss caused by mid-steel corrosion. Here, we show metal-free organic inhibitors having free coumarate anions that can be used either as direct corrosion inhibitors or incorporated into a polymer coating obtained by UV-curing. Four different ionic liquid monomers and polymer coatings with hexoxycoumarate anion and different polymerizable counter cations were investigated. Potentiodynamic polarization, electrochemical impedance spectroscopy, and surface analyses have verified their corrosion inhibition performance on a mild steel AS1020 surface. In the case of the coumarate ionic liquid monomers, the most promising inhibitor is the one coupled with the ammonium cation, showing an inhibition efficiency of 99.1% in solution followed by the imidazolium, pyridinium, and anilinium. Next, the ionic liquid monomers were covalently integrated into an acrylic polymer coating by UV-photopolymerization. In this case, the barrier effect of the polymer coating is combined with the corrosion inhibitor effect of the pendant coumarate anion. Here, the best polymer coatings are those containing 20% imidazolium and pyridinium cations, presenting a greater impedance in the EIS (Electrochemical Impedance Spectroscopy) measurements and less evidence of corrosion in the scribe tests. This article shows that the cationic moiety of coumarate based ionic liquids and poly(ionic liquid)s has a significant effect on their excellent corrosion inhibition properties for a mild steel surface exposed to aqueous chloride solutions.

scholarly journals Organic green corrosion inhibitors (OGCIs): a critical review

2019 ◽  
Vol 37 (2) ◽  
pp. 71-102 ◽  
Author(s):  
Lekan Taofeek Popoola
Keyword(s):  
Plant Extracts ◽  
Corrosion Inhibitors ◽  
Adsorption Thermodynamics ◽  
Corrosive Media ◽  
Environmental Threat ◽  
Factors Influencing ◽  
Damage Costs ◽  
Future Challenges ◽  
Almost All ◽  
Green Corrosion Inhibitors

AbstractOver the decades, corrosion has resulted in loss of lives accorded with damage costs in almost all engineering fields. Thus, it is seen as an environmental threat with catastrophic attributes, which calls for day-to-day research on its final resolution. Recent studies have proven organic green corrosion inhibitors (OGCIs) from plant extracts with biodegradable, environmentally accommodative, relatively cheap, and nonharmful features as the most perfect approach of tackling the problem. This review gives succinct discussion on the mechanisms, classifications, and active functional groups of OGCIs. Measuring ways and factors influencing their efficiency are presented. Also, various plant extracts used as OGCIs in preventing material corrosion in corrosive media coupled with their respective findings, applied characterization techniques, and future challenges are presented. The significance of values obtained from simulating presented mathematical models governing OGCI kinetics, adsorption isotherm, and adsorption thermodynamics is also included. In conclusion, recommendations that will broaden the usage of OGCIs from plant extracts for inhibiting corrosion of materials are presented for prospective researchers in the field of corrosion.

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