Adsorption and inhibitive properties of benzimidazole derivatives in acid mild steel corrosion

Popova, A.; Christov, M.; Raicheva, S.N.; Соколова, Е. И.

doi:10.1016/j.corsci.2003.09.025

Cited by 393 publications

(154 citation statements)

References 24 publications

Supporting

Mentioning

142

Contrasting

Unclassified

Order By: Relevance

“…The value of b, the adsorption coefficient, which is equal to adsorption equilibrium constant (K ads ), for each compound is presented in Table 5. The value of adsorption Gibbs free energy (ΔG 0 ads , in kJ/mol) for each compound, is also presented on Table 5, and can be determined using the following equation [6][7][8]. …”

Section: Figurementioning

confidence: 99%

“…In the simplest form this has a linear relationship between C inh and C inh / θ, according to the following equation [7][8][9] …”

Section: Figurementioning

confidence: 99%

“…Table 4 and Figure 4 represent the corrosion inhibition activities data of compound 1b, 2b and 3b at various concentrations. The analysis of adsorption mechanism of imidazoline derivative compounds towards carbon steel can be derived by the determination of the degree of surface coverage (θ) according to the following equation [7][8][9],…”

Section: Figurementioning

confidence: 99%

“…The measurements of each electrolyte solution should be initiated by the measurement of blank solution. The inhibition activity can be calculated using following equation [6][7][8][9]:…”

Section: The Determination Of Corrosion Inhibition Activitymentioning

confidence: 99%

“…The common organic corrosion inhibitors that widely and commercially used to minimize the corrosion are imidazoline derivative compounds. According to some studies, the corrosion inhibition mechanism on metal surface by imidazoline derivative compounds comprises of three important parts in their structure, that are capable of interacting with the metal surface [5,[7][8][9][10][11][12]. The three important parts of imidazoline derivative compounds are: the 'head', the 'anchor' (or 'pendant'), and the 'tail' parts [5].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

The Synthesis of Imidazoline Derivative Compounds as Corrosion Inhibitor towards Carbon Steel in 1% NaCl Solution

Wahyuningrum¹,

Achmad²,

Syah³

et al. 2008

itbj.sci.

View full text Add to dashboard Cite

Abstract. Oleic imidazoline is one of the nitrogen containing heterocyclic compounds that has been widely used as commercial corrosion inhibitor, especially in minimizing the carbon dioxide induced corrosion process in oilfield mining. In this present work, some imidazoline derivative compounds have been synthesized utilizing both conventional and microwave assisted organic synthesis (MAOS) methods, in order to determine their corrosion inhibition properties on carbon steel surface. The MAOS method is more effective in synthesizing these compounds than the conventional method regarding to the higher chemical yields of products (91% to 94%) and the shorter reaction times (7 to 10 minutes). The characterization of corrosion inhibition activities of the synthesized products towards carbon steel in 1% NaCl solution was determined by the Tafel plot method. The corrosion inhibition activities of compound 1b ((Z)-2-(2-(heptadec-8-enyl)-4,5-dihydroimidazol-1-yl)ethanamine), 2b ((Z)-2-(2-(heptadec-8-enyl)-4,5-dihydroimidazol-1-yl)ethanol) and 3b (2-(2-heptadecyl-4,5-dihydroimidazol-1-yl)ethanamine) at 8 ppm concentration in 1% NaCl solution are, respectively, 32.18%, 39.59% and 12.73%. The heptadec-8-enyl and hydroxyethyl substituents at C(2) and N(1) position of imidazoline ring, respectively, gave the most effective corrosion inhibition activity towards carbon steel compared to the presence of other substituents. The increase in concentrations of compound 1b, 2b and 3b in 1% NaCl solution tends to improve their corrosion inhibition activities. Based on the analysis of the free Gibbs adsorption energy (ΔG 0 ads ) values of compound 1b, 2b and 3b (-32.97, -34.34 and -31.27 kJ/mol, respectively), these compounds have the potential to interact with carbon steel through semi-physiosorption or semi-chemisorption.

show abstract

Section: Figurementioning

confidence: 99%

“…In the simplest form this has a linear relationship between C inh and C inh / θ, according to the following equation [7][8][9] …”

Section: Figurementioning

confidence: 99%

Section: Figurementioning

confidence: 99%

“…The measurements of each electrolyte solution should be initiated by the measurement of blank solution. The inhibition activity can be calculated using following equation [6][7][8][9]:…”

Section: The Determination Of Corrosion Inhibition Activitymentioning

confidence: 99%