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Preparation and Investigation of Some New Pyrazole Derivatives as Corrosion Inhibitors for Mild Steel in Acidic Media | ||
| Journal of Al-Nahrain University - Science | ||
| Article 1, Volume 19, Issue 2, 2016, Pages 33-42 | ||
| Authors | ||
| Zahraa Talib Khudhair; Mehdi Salih Shihab | ||
| Abstract | ||
| Preparation of some new pyrazole derivatives by using a few steps starting from 4-acetylaniline to prepare azo compound (3). Chalcone derivatives (A1-A3) were obtained by reaction compound (3) with a proper aldehyde(benzaldehyde,4-(N,N-dimethylamino) benzaldehyde, terephalaldehyde). Chalcone derivatives (A1-A3) reacted with a proper hydrazine (hydrazine hydrate, phenyl hydrazine) to yield pyrazole derivatives (B1, B2, B3, B4, B5, B6). All prepared structure compounds were confirmed using spectroscopic and1H-NMR techniques. Prepared compounds (B1, B2, B3, B4, B5, B6) were successfully applied as organic corrosion inhibitors for mild steel in 1M H2SO4 solution at 30oC by using a weight loss method. The results of weight loss measurements showed that corrosion inhibition efficiency by increasing the concentration of organic inhibitors for mild steel in 1M H2SO4 solution at 30oC. | ||
| Keywords | ||
| Pyrazole derivatives; weight loss method; corrosion inhibition efficiency | ||
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