Inhibition of the acid corrosion of iron with triphenyl tetrazolium chloride

Ateya, B. G.; El-Khair, B.M. Abo; AL-QASIMI, R.

doi:10.1016/0010-938x(82)90009-9

Cited by 12 publications

(5 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The activation energy, E*, for the corrosion process in free acid solution is found to be 63.56 KJ mol" 1 . Ateya et al [24] found that the activation energy of 51.4 KJ mol" 1 for iron in 5N H 2 S0 4 solution which was identical to that reported by Hadson et al [25], and by Selim et al [26]. On the other hand, Maitra and Singh [27], found that the activation energy of low carbon steel in IN H2SO4 solution is 4.81 KJ mol' 1 .…”

Section: Fig 1 Weight Loss-time Curves For C-steel In 2mhci In Pressupporting

confidence: 61%

“…Numerous studies on iron and steel were done including the corrosion nature and its mechanism in different media. Corrosion inhibition using different inhibitors and the various factors affecting on it were studied by many authors [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. The object of this work is undertaken to investigate the role played by some 1 -phenylamino-3-(4-phenylthiosemicarbazone)-butan-1,3-dione derivati-ves in retarding the dissolution of C-steel in 2M HC1 and throw some light on their mechanism of inhibition.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Use of 1-Phenylamino-3-(4-Phenylthiosemi carbazone)-Butane-I,3-dione Derivatives as Corrosion Inhibitors for C-Steel in Acidic Chloride Solutions

Mohamed¹,

Mostafa²,

Elewady³

et al. 2000

Port. Electrochim. Acta

View full text Add to dashboard Cite

The corrosion inhibition of nitrogen, oxygen and sulphur containing compounds in acidic chloride solutions was studied by chemical and electrochemical techniques. The percentage inhibition efficiency was calculated from both methods is in good agreement. The corrosion rate was found to be a function of the nature, concentration and temperature of the medium. The increase in temperature was found to increase the corrosion rate. The inhibitors are adsorbed on the C-steel surface according to the Langmuir isotherm. Some themrodynamic functions were computed and discussed. Quantum data were calculated and the results of HOMO and LUMO showed that the increase in energy of HOMO corresponds to an increase in the inhibition efficiency.

show abstract

Section: Fig 1 Weight Loss-time Curves For C-steel In 2mhci In Pressupporting

confidence: 61%

Section: Introductionmentioning

confidence: 99%

Use of 1-Phenylamino-3-(4-Phenylthiosemi carbazone)-Butane-I,3-dione Derivatives as Corrosion Inhibitors for C-Steel in Acidic Chloride Solutions

Mohamed¹,

Mostafa²,

Elewady³

et al. 2000

Port. Electrochim. Acta

View full text Add to dashboard Cite

show abstract

“…The detailed experimental procedure has been given elsewhere. 19 Each run was carried out with a fresh test solution and a newly polished electrode. The results were duplicated and the mean value was computed.…”

Section: Methodsmentioning

confidence: 99%

“…The results were analysed with the aim of determining the inhibition ef®ciency of such compounds at various temperatures and concentrations and to elucidate the mechanism of inhibition. 19 …”

Section: Introductionmentioning

confidence: 99%

Aniline and some of its derivatives as corrosion inhibitors for nickel in 1M HCl solution

Aal¹,

Zakria²,

Diab³

et al. 1999

J. Chem. Technol. Biotechnol.

View full text Add to dashboard Cite

The inhibiting action of aniline and some of its derivatives (o-, m-and p-anisidine) towards the corrosion behaviour of nickel in 1 M HCl solution has been studied using weight loss and polarization techniques. These compounds were found to retard the corrosion rate of nickel. At constant temperature, the corrosion rate decreases with increasing inhibitor concentration. On the other hand, at any inhibitor concentration, the increase in temperature leads to an increase in the corrosion rate. The activation energy, DE a , the equilibrium constant, k, as well as the other thermodynamic parameters (DG o ads , DH o ads and DS o ads ) for inhibitor process were calculated and analysed. The inhibitor ef®ciencies calculated from both weight loss and polarization methods are in good agreement and were found to be in the order: p-anisidine b o-anisidine b m-anisidine b aniline. The inhibitive action of these compounds was attributed to the adsorption of molecular species and their inhibitive ef®ciencies depend on the relative position of the ÐOCH 3 group in the aniline ring.

show abstract

“…Thiourea (TU) has been studied as a corrosion inhibitor by several groups of workers (Ateya et al , 1981, 1984; Hoar, 1948; Inder, 1993) and their reports were conflicting. Some workers findings on the efficiency of TU depended on the concentration of TU (Hoar, 1948; Oakes and West, 1969; Oza et al , 1985) while others have observed the effective inhibition was restricted to a small range of concentrations (Chandrasekhara and Narayan, 1978; Inder et al , 1972; Inder and Banerjee, 1972; Khalil et al , 1990).…”

Section: Introductionmentioning

confidence: 99%

Effect of protonation on the inhibition efficiency of thiourea and its derivatives as corrosion inhibitors

Mahgoub

2008

Anti-Corrosion Methods and Materials

View full text Add to dashboard Cite

PurposeThioureas (TUs) have been studied extensively, but their inhibition mechanism is not fully understood. Experimental results and theoretical calculations were used to investigate the effect of TU and its derivatives on the corrosion reaction of mild steel in 1 M H2SO4 at 40°C. An attempt was made to correlate some molecular parameters of these compounds with their corrosion inhibitor efficiency.Design/methodology/approachThe influence of the additives' N‐substituted derivatives of TU such as methylthiourea (MTU), phenylthiourea (PHTU), thiosemicarbazide (TSC) and thiocarbazide (TC) on the dissolution process of the specimen in sulphuric acid was monitored chemically by hydrogen evolution measurements.FindingsThe results show that inhibitor efficiency increased with increase in inhibitor concentration. The protonation process appeared to be the effective parameter with lowering of the inhibition efficiency. Alkyl N‐substituted TU with the least protonation and with the maximum adsorption was a better inhibitor than TU and aryl N‐substituted TU. The thiocarbazide molecule showed less efficiency with the highest protonation due to high charge density on the sulphur atom as well as lengthening and weakening of the C‐ S bond than the thiosemicarbazide.Originality/valueThe paper provides useful information relative to the corrosion inhibition efficiency of N‐substituted TU. It presents the experimental results and theoretical calculations that were used to investigate the effect of derivatives TU on their inhibition efficiency.

show abstract

Inhibition of the acid corrosion of iron with triphenyl tetrazolium chloride

Cited by 12 publications

References 5 publications

Use of 1-Phenylamino-3-(4-Phenylthiosemi carbazone)-Butane-I,3-dione Derivatives as Corrosion Inhibitors for C-Steel in Acidic Chloride Solutions

Use of 1-Phenylamino-3-(4-Phenylthiosemi carbazone)-Butane-I,3-dione Derivatives as Corrosion Inhibitors for C-Steel in Acidic Chloride Solutions

Aniline and some of its derivatives as corrosion inhibitors for nickel in 1M HCl solution

Effect of protonation on the inhibition efficiency of thiourea and its derivatives as corrosion inhibitors

Contact Info

Product

Resources

About