Electrochemical and quantum chemical parameters of (-)-(S)-9-fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acidas anti-corrosive agent for API 5L X-52 steel

被引：5

作者：

Abeng, Fidelis E. ^{[1
,2
]}

Ikpi, Magdalene E. ^{[2
]}

Okpashi, Victor E. ^{[3
]}

Ushie, Onumashi A. ^{[4
]}

Obeten, Mbang E. ^{[1
]}

机构：

[1] Cross River Univ Technol, Dept Chem, Mat & Electrochem Res Grp, PMB 1123, Calabar, Nigeria

[2] Univ Calabar, Dept Pure & Appl Chem, Corros & Electrochem Res Lab, PMB 1115, Calabar, Nigeria

[3] Cross River Univ Technol, Dept Biochem, PMB 1123, Calabar, Nigeria

[4] Fed Univ Wukari, Dept Chem Sci, Wukari, Nigeria

来源：

JOURNAL OF ELECTROCHEMICAL SCIENCE AND ENGINEERING | 2020年 / 10卷 / 03期

关键词：

Corrosion; density functional theory; potentiodynamic polarization; organic inhibitor; adsorption; MILD-STEEL; CORROSION-INHIBITORS; LEAF EXTRACT; FLUOROQUINOLONES; CIPROFLOXACIN; NORFLOXACIN; OFLOXACIN; DRUGS;

D O I：

10.5599/jese.744

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The inhibitive action of (-)-(S)-9-fluoro-2,3-dihydro-3-methyl-10-(4-methyl-1-piperazinyl)-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid (Levaquin) on API 5L X-52 steel in 2 M HCl solution was investigated using potentiodynamic polarization method and quantum chemical study. Levaquin drug showed good inhibition efficiency of 88 and 95 % at 303 and 323 K, respectively. The results of experimental measurements revealed that Levaquin drug works as a mixed type inhibitor. Langmuir thermodynamic model was tested to describe the mode of inhibitor adsorption on the steel surface. The quantum chemical calculations confirmed the efficacy of Levaquin drug as a corrosion inhibitor.

引用

页码：235 / 244

页数：10