CORROSION OF CARBON-STEEL ALLOY IN 0.1M NITRIC ACID IN PRESENCE OF PLASTIC WASTE AS CORROSION INHIBITORS | ||||
| Al-Azhar Bulletin of Science | ||||
| Article 19, Volume 19, Issue 1-A, June 2008, Page 283-294 PDF (401.84 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/absb.2008.10102 | ||||
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| Authors | ||||
REDA ABDEL HAMEED  1; H. ISMAIL2
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| 1Chemistry Department, Faculty of Science, Al-Azhar University, Cairo, Egypt. | ||||
| 2Egyptian Petroleum Research Institute, Nasr City 11727, Cairo, Egypt. | ||||
| Abstract | ||||
| Recyclization of poly (ethyleneterphthalate), (PET), with Diethanolamine and Triethanolamine having 1:2 wt% of PET: wt% of DEA or wt% TEA, in presence of manganese acetate as a catalyst. The inhibition action of the prepared compounds (D2 & T2) on the corrosion of carbon-steel which used in the manufacture of petroleum pipelines in nitric acid was evaluated, at different concentrations of inhibitors from (50-250 ppm) at different temperatures, ranged from (303-333 K). The polarization curves indicate that these compounds may act as mixed-type inhibitors. The adsorption of the prepared compounds on C-steel was found to follow the Langmuir adsorption isotherm,they also obey El-Awady isotherm. The values of activation energies (Ea*) and all thermodynamic activation parameters which determined, indicating that the type of adsorption was chemical adsorption. | ||||
| Keywords | ||||
| recycling; Nitric acid; Corrosion; Inhibitor; carbon steel | ||||
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