Study of the inhibition of hydrogen sulfide corrosion of steel in synthetic stratum water using the complex method

Application of electrochemical impedance spectroscopy to study hydrogen sulphide corrosion of steel and its inhibition: a review

“…Protective properties of high amines (AMDOR-IK-7), their acetates and PKU-6, a product of condensation of urotropine with alkyl chloride (Table 2), at C in from 5 to 200 mg L −1 were also studied by Professor Tsygankova with colleagues in researches [60][61][62][63][64][65]. The experiments were conducted in media simulating oil-field water, without and with H 2 S (from 50 to 400 mg L −1 ).…”

“…Mixture of 30% amides on basis of etheroaminеs with fatty acid AMDOR IK-3N2 [85] Mixture of 30% diamides on basis of etheroaminеs with fatty acid AMDOR IK-6 [63] Mixture of 10% aminoparafine C 12 -C 18 and 10% imidazoline dissolved in specific mixture of organic solvents AMDOR IK-7 [60][61][62] Mixture of 10% highest aminеs С 10 -С 16 dissolved in specific mixture of organic solvents EM-5 [70] Bis-imidazoline on basis of PEPA and acids C 9 -C 12 EM-6 [70] Imidazoline on basis of PEPA and acids C 9 -C 12 EM-9 [71] Imidazoline on basis of PEPA and acids of tall oil EM-10 [63] Bis-imidazoline on basis of PEPA and acids of tall oil EM-11 [63] Imidazoline on basis of PEPA and acids of coconut oil EM-12 [72] Imidazoline on basis of PEPA and lauric acid EM-13 [72] Imidazoline on basis of PEPA and acids C 10 -C 18 EM-14 [72] Imidazoline on basis of PEPA and acids of vegetable oil EM-20 [72] Bis-imidazoline on basis of PEPA and lauric acid INCORGAS 21T-A [77,85] 20 % solution of tertiary amines and the imidazolines based on PEPA and naphthenic acids in mixed organic solvents INCORGAS 21T-B [77,85] 20 % solution of the imidazolines based on PEPA and C 10 -C 18 fatty acids and quaternary ammonium compounds in mixed organic solvents INKORGAZ-50 [78] 30% solution of the amide based on etheroaminеs and fatty acid in mixed organic solvents INKORGAZ-11TNT [85] Mixture based on imidazolines and amidoamines…”

“…Inhibitor I [79] 10 % solution of higher aliphatic amines C 10 -C 16 in a mixture of aprotic solvents Inhibitor II [79] Mixture of imidazolines and amidoamines obtained in a reaction of PEPA with oleic acid FLEK-IK 201 A [90] Mixture of imidazolines with C 10 -C 14 hydrocarbon chains dissolved in polar organic solvents FLEK-IK 201 B [90] Mixture of imidazolines with C 10 -C 14 hydrocarbon chains, polar organic solvents, light tall oil, and non-ionisable surface-active substance PKU-6 [61,62] Product of hexamine and alkyl chloride condensation was noted to have small effect on the rate of cathodic reaction. We explain it by the fact that the adsorption of surface-active substances affects the mass transfer stage less than the charge transfer stage if diffusion layer thickness is much greater than that of the adsorption layer.…”

“…We explain it by the fact that the adsorption of surface-active substances affects the mass transfer stage less than the charge transfer stage if diffusion layer thickness is much greater than that of the adsorption layer. As a result of analysis of the Warburg impedance values, the authors found that steel surface became more developed and active in the presence of H 2 S because of conductive sulphide layers formation [61]. The calculated EIS parameters ( R D , R a , C dl ) varied according to previously described regularities [63].…”