Chukanovite (Fe2(OH)2CO3) identified as a corrosion product at sand-deposited carbon steel in CO2-saturated brine

Pandarinathan, Vedapriya; Lepková, Kateřina; Bronswijk, Wilhelm van

doi:10.1016/j.corsci.2014.03.032

Cited by 50 publications

(29 citation statements)

References 16 publications

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“…Figure 5 (c). The morphology of Fe2(OH)2CO3 formed in our system is similar to that reported by others in CO2-loaded brine and contaminated groundwater treatment systems [17][18][19]. Also, the disappearance and/or weakening of iron peaks located at approximately 45°, 65°, and 82° indicated that the mixture layer, mostly Fe2(OH)2CO3 (Table S1 in supplementary material), was thick enough that X-rays could not penetrate it to reach the A106 carbon steel substrate.…”

Section: Co2 Effectsupporting

confidence: 89%

CO2 loading-dependent corrosion of carbon steel and formation of corrosion products in anoxic 30 wt.% monoethanolamine-based solutions

et al. 2016

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Corrosion of A106 carbon steel in anoxic 30 wt.% monoethanolamine-based solutions (one example of a corrosive solvent for post-combustion CO2 capture) with CO2 loadings ranging from 0.24 to 0.53 mol CO2/mol amine is investigated. Results show that the corrosion and formation of a protective layer of corrosion products on the A106 surface are strongly CO2 loading-dependent. That is, initial corrosion is accelerated with increased CO2 loading. However, the formation of chukanovite and subsequently siderite, which dramatically inhibits the corrosion, was promoted with increasing CO2 loading. Chukanovite is a metastable intermediate corrosion product which transforms into siderite. Possible mechanisms are discussed.

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Section: Co2 Effectsupporting

confidence: 89%

CO2 loading-dependent corrosion of carbon steel and formation of corrosion products in anoxic 30 wt.% monoethanolamine-based solutions

et al. 2016

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“…It illustrated that silty sand made main contribution on cathodic current inhibition instead of corrosion product. Similar phenomenon was also exhibited in sand-deposited corrosion of carbon steel [23][24][25]. The deposited sand could act as diffusion barrier, blocking active sites on the electrode surface and reducing cathodic reaction [23].…”

Section: Potentiodynamic Polarization Curvesupporting

confidence: 59%

“…It indicated that the sand adsorption layer with few pores blocked the transport of ferrous ions from matrix surface to the bulk. Deposited sand with large size (200-500 lm) also exhibited this blocking effect [31][32][33]. The anodic current densities in 1000, 5000 mesh and sand-free conditions were close, which indicated that the sand adsorption layers with more pores in 1000 and 5000 mesh conditions provided enough transport paths for ferrous ions.…”

Section: Effect Of Silty Sand Adsorption Layer On Corrosion Inhibitionmentioning

confidence: 82%

Corrosion Performance of Carbon Steel in CO2 Aqueous Environment Containing Silty Sand with Different Sizes

Liu

Shi-an

et al. 2017

Acta Metall. Sin. (Engl. Lett.)

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Corrosion performance of carbon steel in CO 2 aqueous environment containing silty sand with different sizes was investigated by immersion tests and electrochemical measurements. Silty sand could form an adsorption layer on steel surface in initial period, and the sand adsorption layer was turned into a mixture film of silty sand with corrosion product in last period. The adsorption layer in 325 mesh condition (large size) had the fewest pores for H 2 CO 3 transport, exhibiting the highest cathodic current inhibition. In spite of little corrosion product, the sand adsorption film formed in 325 mesh condition induced the lowest corrosion rate. For 1000 and 5000 mesh silty sand, the sand adsorption layer had some pores for H 2 CO 3 transport, leading to low cathodic current inhibition and much matrix dissolution. But the adsorption layer for 5000 mesh silty sand (small size) had the largest special surface area to accelerate heterogeneous precipitation of corrosion product FeCO 3 . Therefore, the mixture film in 5000 mesh condition was more compact, exhibiting stronger anodic inhibition and lower corrosion rate than those in 1000 mesh condition.

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“…However, M(4-VP) appears to have a higher affinity for Fe(II) than O(4-VP). Then, Fe(II)-4VP monomer complex is formed preferentially to FeCO 3 or Fe 2 (OH) 2 CO 3 corrosion layer [36][37][38]. The high mobility of the complex due to its small size associated to a strong agitation remove from the surface Fe(II) and subsequent corrosion product that could delete the corrosion kinetic and then let the surface totally active.…”

Section: Linear Polarization Resultsmentioning

confidence: 99%

Synthesis and Characterization of Oligomer 4-Vinylpyridine as A Corrosion Inhibitor for Mild Steel in CO<sub>2</sub> Saturated Brine Solution

Ilim

Jefferson²,

Simanjuntak

et al. 2018

Indones. J. Chem.

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In this work, the oligomer of 4-vinylpyridine designated as O(4-VP) was synthesized by hydrogen peroxide initiated chain growth polymerization and characterized in terms of molecular weight and structure by matrix assisted laser desorption ionization time of flight mass spectroscopy (MALDI-TOF MS). The oligomer was tested as corrosion inhibitor of mild steel in brine solution saturated with carbon dioxide, with the main purpose to investigate the effect of inhibitor concentrations and temperatures on the inhibition activity defined in terms of corrosion rate and percent of protection. The inhibition tests were carried out using the methods of weight loss (WL) and linear polarization (LP). Characterization using MALDI-TOF MS revealed that the oligomer has the mass (m/z) in the range 200-2400, which corresponds to chain length of 2-22 repeating units. The results of corrosion rate measurements show that the corrosion rate with the use of oligomer is significantly lower than that without inhibitor, demonstrating that the oligomer functioned as effective corrosion inhibitor, while the 4-vinyl pyridine monomer was found to promote the corrosion. It was also found that the protection by the oligomer increased with increasing temperature and it was predicted the oligomer was chemically adsorbed by the surface of the metal. Keywords: oligomer 4-vinylpyridine; corrosion inhibitor; CO 2 corrosion; MALDI-TOF MS ABSTRAK Dalam penelitian ini, oligomer 4-vinilpiridin, O(4-VP), disintesis menggunakan inisiator hidrogen peroksida untuk pertumbuhan rantai polimer dan dikarakterisasi berat molekul dan struktur molekulnya menggunakan matrix assisted laser desorpsion ionization time of flight mass spectroscopy (MALDI-TOF MS). Oligomer kemudian diuji sebagai inhibitor korosi baja ringan dalam larutan air garam yang jenuh dengan gas karbon dioksida, dengan tujuan utama untuk menyelidiki efek dari konsentrasi inhibitor dan suhu pada aktivitas inhibisi yang dinyatakan dalam bentuk laju korosi dan persen proteksi. Tes inhibisi dilakukan dengan menggunakan metode kehilangan berat (WL), dan polarisasi linier (LP). Karakterisasi menggunakan MALDI-TOF MS

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Chukanovite (Fe2(OH)2CO3) identified as a corrosion product at sand-deposited carbon steel in CO2-saturated brine

Cited by 50 publications

References 16 publications

CO2 loading-dependent corrosion of carbon steel and formation of corrosion products in anoxic 30 wt.% monoethanolamine-based solutions

CO2 loading-dependent corrosion of carbon steel and formation of corrosion products in anoxic 30 wt.% monoethanolamine-based solutions

Corrosion Performance of Carbon Steel in CO2 Aqueous Environment Containing Silty Sand with Different Sizes

Synthesis and Characterization of Oligomer 4-Vinylpyridine as A Corrosion Inhibitor for Mild Steel in CO<sub>2</sub> Saturated Brine Solution

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