Inhibition of mild steel corrosion in hydrochloric acid using two novel pyridine Schiff base derivatives: a comparative study of experimental and theoretical results

Meng, Yue; Wenbo, Ning; Xu, Bin; Yang, Wu; Zhang, Kegui; Chen, Yun; Li, Lihua; Liu, Xi; Zheng, Jinhong; Zhang, Yimin

doi:10.1039/c7ra08170g

Cited by 108 publications

(41 citation statements)

References 63 publications

(92 reference statements)

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“…The electronic characteristics of organic compounds are important parameters for predicting its reactivity on the carbon steel surface. Generally speaking, the HOMO is usually related to electrons‐donate capacity of the molecular, and the LUMO denotes the ability of electrons accept . The HOMO and LUMO electron density isosurfaces of the unit structure of PASP and PASP‐Thr are shown in Figure .…”

Section: Resultsmentioning

confidence: 99%

Corrosion inhibition performance of threonine‐modified polyaspartic acid for carbon steel in simulated cooling water

Chen

Cai

Han

et al. 2018

J of Applied Polymer Sci

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Green polymers as corrosion inhibitors are gradually used to protect metal in solution environment. A polyaspartic acid threonine derivative (PASP-Thr) was synthesized and its structure was characterized by Fourier transform infrared (FTIR) spectroscopy and nuclear magnetic resonance. The corrosion inhibition effect of polyaspartic acid (PASP) and PASP-Thr on carbon steel in simulated cooling water was investigated by weight loss tests and electrochemical measurements. Experimental results show PASP-Thr as a mixedtype inhibitor exhibits higher corrosion inhibition efficiency than PASP, and the inhibition efficiency of PASP-Thr reached 93.06% at the dosage was 200 mg L −1 . The carbon steel surface in different situations was analyzed using atomic force microscope, scanning electronic microscope/energy dispersive X-ray, and FTIR, demonstrates the formation of a protective film on carbon steel surface. The inhibition effect of PASP-Thr was primarily attributed to the protective film formed on steel surface by physical and chemical adsorption. Moreover, quantum chemical calculation elaborated the relationship between the inhibition efficiency and the PASP-Thr molecular structure.

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Section: Resultsmentioning

confidence: 99%

Corrosion inhibition performance of threonine‐modified polyaspartic acid for carbon steel in simulated cooling water

Chen

Cai

Han

et al. 2018

J of Applied Polymer Sci

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“…A platinum foil was used as the counter electrode, a saturated calomel electrode was the reference electrode, and carbon steel served as the working electrode. The polarization curves were obtained from −1.0 to −0.3 V at a scanning rate of 0.01 V/s at 25 °C . The test concentration of corrosion inhibitors was 30, 60, 90, 120, and 150 mg/L.…”

Section: Methodsmentioning

confidence: 99%

Synthesis and characterization of PBTCA‐modified hyperbranched polyether corrosion and scale inhibitors

Wang

Chen

Zhang

et al. 2019

J of Applied Polymer Sci

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In this study, hyperbranched polyether (HBP) with terminal hydroxyl was synthesized from tetrahydrofuran and glycidol by cationic open-loop polymerization and then modified by 2-phosphono-butane-1,2,4-tricarboxylic acid to introduce carboxyl and phosphorus to improve corrosion and scale inhibition. The structure of the products (HBPs) was determined by FTIR and 1 H-NMR. The scale inhibition efficiency (E) of calcium carbonate and calcium sulfate reached 99.74 and 97.10% at a concentration of 20 mg/L. X-ray diffraction and scanning electron microscopy were used to examine crystal type and morphology. The addition of scale inhibitors can inhibit the growth of the calcium scale crystal and destroy the crystal structure. The corrosion inhibition rate of HBPs can reach 72.98% when dosage was 150 mg/L. Polarization curve showed that HBPs was a kind of mixed corrosion inhibitor. The adsorption of HBPs on the surface of carbon steel conformed to Langmuir adsorption, which formed physical adsorption film and inhibited the corrosion process.

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“…Organic corrosion inhibitors are widely used in industry because of their effectiveness at wide range of temperatures, compatibility with protected materials, good solubility and relatively low toxicity [78,79] This is a very important issue for researchers which is confirmed by an increasing number of papers ( Figure 4). These compounds act as cathodic and anodic inhibitors.…”

Section: Organic Corrosion Inhibitorsmentioning

confidence: 99%

Organic Corrosion Inhibitors

Brycki¹,

Kowalczyk²,

Szulc³

et al. 2018

Corrosion Inhibitors, Principles and Recent Applications

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Organic corrosion inhibitors are one of the five ways, besides material selection, design, cathodic protection and coatings, to protect materials against corrosion. Corrosion is an ubiquitous phenomena that deteriorates all materials, metals, plastics, glass and concrete. The costs of corrosion are tremendous and amounts to 4.0% of gross domestic product (GDP) in USA. The similar losses of GDP are noted in all countries around the world. At this point of time, there is no way to completely stop the corrosion processes. Some new solutions can only slow this process. Organic corrosion inhibitors are widely used in industry because of their effectiveness at wide range of temperatures, compatibility with protected materials, good solubility in water, low costs and relatively low toxicity. Organic corrosion inhibitors adsorb on the surface to form protective film which displace water and protect it against deteriorating. Effective organic corrosion inhibitors contain nitrogen, oxygen, sulfur and phosphorus with lone electron pairs as well can contain structural moieties with π-electrons that interact with metal favoring the adsorption process. This review presents mechanisms and monitoring of corrosion, laboratory methods for corrosion study, relationship between structure and efficacy of corrosion inhibitions, theoretical approach to design new inhibitors and some aspects of biocorrosion.

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Inhibition of mild steel corrosion in hydrochloric acid using two novel pyridine Schiff base derivatives: a comparative study of experimental and theoretical results

Abstract: Herein, we present a comparative study of experimental and theoretical results on the inhibition of mild steel corrosion in hydrochloric acid using two novel pyridine Schiff base derivatives.

Cited by 108 publications

References 63 publications

Corrosion inhibition performance of threonine‐modified polyaspartic acid for carbon steel in simulated cooling water

Corrosion inhibition performance of threonine‐modified polyaspartic acid for carbon steel in simulated cooling water

Synthesis and characterization of PBTCA‐modified hyperbranched polyether corrosion and scale inhibitors

Organic Corrosion Inhibitors

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