Hydrazine and substituted hydrazines as corrosion inhibitors for lead in acetic acid

Sankarapapavinasam, S.; Pushpanaden, F.; Ahmed, M.F.

doi:10.1179/000705989798270351

Cited by 16 publications

(4 citation statements)

References 7 publications

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“…21 Recent efforts to find suitable protective coatings for lead in corrosive solutions have investigated the influence of several organic compounds containing functional groups with polar atoms such as nitrogen, oxygen, phosphorous or sulfur. [22][23][24][25][26][27][28][29][30][31] An interesting class of the surfactant inhibitor coatings has been found through the deposition of non-toxic saturated linear monocarboxylates of the type CH 3 (CH 2 ) n-2 COONa with n = 7-12. 6,26 An initial study by our group 32,33 showed that the immersion of lead metal substrates in a solution of a monocarboxylate of this type (n = 12) results in their protection due to the growth of a coating consisting of a crystalline lead monocarboxylate complex, (CH 3 (CH 2 ) 10 COO) 2 Pb.…”

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confidence: 99%

Hydrogenated Dimer Acid as a Corrosion Inhibitor for Lead Metal Substrates in Acetic Acid

Keersmaecker

Berg

Verbeken

et al. 2015

J. Electrochem. Soc.

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The surface characteristics of a lead carboxylate coating induced on a lead substrate using a dimer acid are discussed together with its effectiveness against acetic acid corrosion. Thermogravimetric analysis and differential scanning calorimetry were used to examine the thermal properties of the hydrogenated dimer acid and its corresponding sodium salt. Scanning electron microscopy with energy-dispersive spectroscopy, X-ray photoelectron spectroscopy and infrared spectroscopy were used to visualize and characterize the deposited coatings on the lead substrate. Both the free dimer acid and the corresponding sodium salt formed a protective layer of lead carboxylate complexes through a reaction with the lead substrate. Single-sine electrochemical impedance spectroscopy and potentiodynamic polarization measurements of the bare and coated samples assessed the corrosion resistance of the coatings. Under the corrosive acetic acid test conditions, the lead-dimer-coated samples corroded more slowly than the bare lead.

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confidence: 99%

Hydrogenated Dimer Acid as a Corrosion Inhibitor for Lead Metal Substrates in Acetic Acid

Keersmaecker

Berg

Verbeken

et al. 2015

J. Electrochem. Soc.

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“…Sodium benzoate, cyclohexylamine carbonate and/or cyclohexylamine nitrate are usually used as corrosion inhibitors for lead in atmospheric conditions. Whereas thiourea, phosphates, chromates, amines, benzotriazole or hydrazines are usually used as corrosion inhibitors for lead in organic acids condition [32][33][34][35][36][37]. In this paper, sodium salts of carboxylic acids, which are in literature discussed periodically, will be examined.…”

Section: The Principle Of This Corrosion Protection Is a Creation Of mentioning

confidence: 99%

Inhibition efficiency of sodium salts of carboxylic acids on corrosion of lead in archive environment

Strachotová

Kouřil

Kuchťáková

et al. 2019

Koroze a Ochrana Materialu

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Lead in archive environment suffers from severe corrosion attack caused by the organic acids’ vapours usually presented in such an environment. One of possible ways of corrosion protection of lead is its surface treatment by solutions of sodium salts of monocarboxylic acids (general formula CH3(CH2)n-2COONa, noted NaCn, n = 10, 11, 12). The principle of this corrosion protection is a creation of conversion coating on the lead’s surface, which decreases corrosion rate of lead in the atmospheric environment polluted by organic acids’ vapour. Our research aims at the selection of a suitable protection system that would be applicable to conservation of historical lead in archives and museums. This paper evaluates the corrosion behaviour of treated lead based on the values of polarisation resistance and shape of potentiodynamic curves in simulated corrosive environment (0.01 mol l−1 solution of acetic acid). The lead samples with different state of surface (pure, corroded and electrochemically cleaned) were treated with sodium salts of monocarboxylic acids NaCn (n = 10, 11, 12) having concentration of 0.01 and 0.05 mol l−1. In simulated corrosive atmosphere (above 0.001 mol l−1 acetic acid solution vapours), corrosion rate was measured by means of electrical resistance technique. The inhibition efficiency of monocarboxylic acids is dependent on their carbon chain length and their concentration. The greatest inhibiting efficiency in corrosive atmospheres and for all lead samples was observed for the sodium salt of dodecanoic acid having concentration of 0.05 mol l−1. Artificially created corrosion products and salt coatings were analysed by X-ray diffraction analysis and their surface morphology was observed by scanning electron microscopy. A protective salt coatings are mainly composed of metallic soaps in dimer form.

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“…Its main applications are in the production of polymers, food, pharmaceuticals, fibres, biodegradable solvents, lubricating oils, cosmetics, agriculture, alkyd resins and coatings (known as succinates) [5]. In recent years there has been a substantial research effort in the corrosion field focussed on developing "green" corrosion inhibitors, which are protective and environmentally friendly [5][6][7][8][9][10]. Some studies have investigated the influence of organic compounds on the corrosion of metal substrates in acid.…”

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confidence: 99%

“…Most organic inhibitors form a protective coating by adsorption to the metal surface. The use of butanedioic acid for the passivation of different metal substrates has been little explored, indicating an opportunity for new developments in this area [6][7][8][9][10].In order to understand the interaction between dicarboxylic acids and metallic substrates, characterisation of the pure compounds is required. The present work presents X-ray photoelectron spectra of a butanedioic acid standard powder.…”

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Dicarboxylic acids analysed by x-ray photoelectron spectroscopy, Part II - butanedioic acid anhydrous

Ferreira

Trindade

Tshulu

et al. 2017

Surface Science Spectra

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SECTION A -OverviewA-3. Abstract: X-ray photoelectron spectroscopy (XPS) was carried out to analyse a commercially available butanenedioic acid (succinic acid) powder. XPS spectra were obtained using incident monochromatic Al Ka radiation at 1486.6 eV. A survey spectrum together with O 1s and C 1s core level spectra are presented. The presence of characteristic carbon and oxygen photoelectrons peaks allows the use these results as a reference for dicarboxylic acids.A-3a. Introduction: Butanedioic acid (succinic acid) is considered one of the most promising compounds for chemical production purposes as it is derived from renewable resources. It can be used to produce biopolymers such as polyesters, polyamides, and poly (ester amides). However, in order to make the industrial use of butanedioic acid economically favourable, it is still necessary to improve its purification through fermentation methods [1][2][3][4]. The potential of butanedioic acid for the production of bio-based polymers has been reported by the U.S. Department of Energy in 2004, which established butanedioic acid as one of the top 12 building block chemicals derived from renewable resources [4]. Its main applications are in the production of polymers, food, pharmaceuticals, fibres, biodegradable solvents, lubricating oils, cosmetics, agriculture, alkyd resins and coatings (known as succinates) [5]. In recent years there has been a substantial research effort in the corrosion field focussed on developing "green" corrosion inhibitors, which are protective and environmentally friendly [5][6][7][8][9][10]. Some studies have investigated the influence of organic compounds on the corrosion of metal substrates in acid. Most organic inhibitors form a protective coating by adsorption to the metal surface. The use of butanedioic acid for the passivation of different metal substrates has been little explored, indicating an opportunity for new developments in this area [6][7][8][9][10].In order to understand the interaction between dicarboxylic acids and metallic substrates, characterisation of the pure compounds is required. The present work presents X-ray photoelectron spectra of a butanedioic acid standard powder. It is the second part of a series of three papers presenting results for standard dicarboxylic acids with varying chain lengths: propanedioic, butanedioic and pentanedioic.Dicarboxylic acids and their respective salts are rather unstable and known to undergo damage when exposed to X-rays, hence there was always a compromise between quality of spectra and level of damage, as reported for calcium oxalate by Salvi et. al [11]. The use of a 50 eV pass energy required a lower acquisition time to achieve a reasonable signal-to-noise ratio. For the same reason, the channel width was chosen to be 0.2 eV rather than the typical value of 0.1 eV. The acquisition time was 101 s.In addition to the spectra recorded under standard acquisition conditions, 'snapshot' spectra (acquistion time 1 s) of the C 1s and O 1s peaks are also presented to give an indicati...

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Hydrazine and substituted hydrazines as corrosion inhibitors for lead in acetic acid

Abstract: S. SANKARAP AP AVINASAM

Cited by 16 publications

References 7 publications

Hydrogenated Dimer Acid as a Corrosion Inhibitor for Lead Metal Substrates in Acetic Acid

Hydrogenated Dimer Acid as a Corrosion Inhibitor for Lead Metal Substrates in Acetic Acid

Inhibition efficiency of sodium salts of carboxylic acids on corrosion of lead in archive environment

Dicarboxylic acids analysed by x-ray photoelectron spectroscopy, Part II - butanedioic acid anhydrous

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