Some natural aqueous extracts of plants as green inhibitor for carbon steel corrosion in 0.5 M sulfuric acid

Eco-friendly biodegradable Rhododendron schlippenbachii (R. schlippenbachii) green inhibitors, R. schlippenbachii methanolic (RSMeOH) extract, which can effectively reduce low carbon steel corrosion rate, were investigated using weight-loss and electrochemical (electrochemical impedance spectroscopy) techniques. The inhibitors exhibited higher efficiency by retarding the corrosion process in 1[Formula: see text]M H2SO4 and the inhibition efficiency is found to be concentration dependent. The reactivity of the predominant phytochemical components of the extract are analyzed. The adsorption of inhibitors on low carbon steel is followed the Langmuir adsorption. The protective inhibitor film formed on the metal surface was confirmed by SEM and AFM techniques.

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An investigation of carbon steel corrosion inhibition in hydrochloric acid medium by an environmentally friendly green inhibitor

Research on Chemical Intermediates ◽

10.1007/s11164-012-0788-2 ◽

2012 ◽

Vol 39 (6) ◽

pp. 2663-2677 ◽

Cited By ~ 13

Author(s):

M. Larif ◽

A. Elmidaoui ◽

A. Zarrouk ◽

H. Zarrok ◽

R. Salghi ◽

...

Keyword(s):

Carbon Steel ◽

Hydrochloric Acid ◽

Acid Medium ◽

Corrosion Inhibition ◽

Environmentally Friendly ◽

Steel Corrosion ◽

Green Inhibitor ◽

Hydrochloric Acid Medium

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Experimental and theoretical studies of benzalkonium chloride as an inhibitor for carbon steel corrosion in sulfuric acid

Journal of Industrial and Engineering Chemistry ◽

10.1016/j.jiec.2014.09.026 ◽

2015 ◽

Vol 24 ◽

pp. 174-180 ◽

Cited By ~ 42

Author(s):

Lei Guo ◽

Shanhong Zhu ◽

Shengtao Zhang

Keyword(s):

Sulfuric Acid ◽

Carbon Steel ◽

Benzalkonium Chloride ◽

Steel Corrosion ◽

Theoretical Studies ◽

Experimental And Theoretical Studies

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The Oil fromMentha rotundifoliaas Green Inhibitor of Carbon Steel Corrosion in Hydrochloric Acid

Chemical Engineering Communications ◽

10.1080/00986445.2014.993469 ◽

2014 ◽

Vol 203 (2) ◽

pp. 270-277 ◽

Cited By ~ 12

Author(s):

Abdelkader Khadraoui ◽

Abdellah Khelifa ◽

Hocine Boutoumi ◽

Yasser Karzazi ◽

Belkheir Hammouti ◽

...

Keyword(s):

Carbon Steel ◽

Hydrochloric Acid ◽

Steel Corrosion ◽

Green Inhibitor

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Corrosion Inhibition of Carbon Steel in 0.5 M H2SO4 by Phtalocyanine Blue

ISRN Corrosion ◽

10.1155/2014/945645 ◽

2014 ◽

Vol 2014 ◽

pp. 1-8 ◽

Cited By ~ 4

Author(s):

J. C. Valle-Quitana ◽

G. F. Dominguez-Patiño ◽

J. G. Gonzalez-Rodriguez

Keyword(s):

Sulfuric Acid ◽

Carbon Steel ◽

Corrosion Inhibitor ◽

Electrochemical Impedance ◽

Steel Corrosion ◽

Corrosion Process ◽

Blue Dye ◽

Protective Film ◽

Film Properties ◽

Adsorption Desorption

Phthalocyanine blue dye has been investigated as a carbon steel corrosion inhibitor in 0.5 M sulfuric acid by using polarization curves, electrochemical impedance spectroscopy, and gravimetric tests. Dye concentrations included 0, 100, 200, 400, 600, 800, and 1000 ppm, whereas testing temperatures were 25, 40, and 60°C. Results indicated that phtalocyanine blue is a good corrosion inhibitor with its efficiency increasing with the concentration up to 40°C, but it increases at 60°C. Inhibitor improves the passive film properties and it forms an adherent, compact, protective film, acting, therefore, as an anodic-type inhibitor. At 25 and 40°C the corrosion process was under charge transfer, whereas at 60°C the adsorption/desorption of some species from the metal surface controlled the corrosion process.

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