Investigation of the corrosion inhibition effect of 3-methyl-6-oxo-4-(thiophen-2-yl)-4,5,6,7-tetrahydro-2H-pyrazolo[3,4-b]pyridine-5-carbonitrile (TPP) on mild steel in hydrochloric acid

被引:30
|
作者
Singh, Priyanka [1 ]
Quraishi, M. A. [1 ]
Gupta, S. L. [2 ]
Dandia, A. [2 ]
机构
[1] Banaras Hindu Univ, Indian Inst Technol, Dept Chem, Varanasi 221005, Uttar Pradesh, India
[2] Univ Rajasthan, Dept Chem, Ctr Adv Studies, Jaipur 302004, Rajasthan, India
来源
关键词
Mild steel (MS); Acid solution; Weight loss; Electrochemical measurements; SEM; 1 M HCL; M H2SO4 SOLUTION; CARBON-STEEL; DERIVATIVES; ADSORPTION; BEHAVIOR; POLYMER; MIXTURE; MEDIA; DRUG;
D O I
10.1016/j.jtusci.2015.07.005
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The corrosion inhibition effect of the synthesized compound 3-methyl-6-oxo-4-(thiophen-2-yl)-4,5,6,7-tetrahydro-2H-pyrazolo[3,4-b]pyridine-5-carbonitrile (TPP) on the corrosion of MS in 1 M HCl was investigated using weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) methods. The results obtained for TPP showed a good inhibition effect on the MS in the 1 M HCl solution. The inhibition efficiency was found to increase with a corresponding increase in the TPP concentration, and the best inhibition of 96.83% occurred at a TPP concentration of 200 ppm. The potentiodynamic polarization studies revealed that TPP behaved as mixed-type of inhibitor that predominantly inhibited the cathodic reaction. The impedance parameters were indicative of the high inhibitory efficiency and the adsorption of TPP on MS. Amongst the Frumkin, Temkin and Langmuir isotherms, the studied compound more closely followed the Langmuir adsorption isotherm. The scanning electron microscopy (SEM) examinations of the electrode surface confirmed the existence of such an adsorbed film. (C) 2015 The Authors. Production and hosting by Elsevier B.V. on behalf of Taibah University. This is an open access article under the CC BY-NC-ND license (http:/creativecommons.org/licenses/by-nc-nd/4.0/).
引用
收藏
页码:139 / 147
页数:9
相关论文
共 50 条
  • [1] Synthesis of 4-aryl-3-methyl-6-oxo-4,5,6,7-tetrahydro-2H-pyrazolo[3,4-b]pyridine-5-carbonitrile via a one-pot, three-component reaction
    Rahmati, Abbas
    TETRAHEDRON LETTERS, 2010, 51 (22) : 2967 - 2970
  • [2] 4-(4-Fluorophenyl)-3-methyl-6-oxo-1-phenyl-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-b]pyridine-5-carbonitrile
    Wang, J
    Zhu, SL
    ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS, 2006, 62 : O47 - O48
  • [3] 4-(4-bromophenyl)-4,5,6,7-tetrahydro-3-methyl-6-oxo-1-phenyl-1H-pyrazolo[3,4-b]pyridine-5-carbonitrile ethanol solvate
    Fan, Xue-Sen
    Li, Xiao-Yan
    Wang, Xia
    Li, Dong-Fang
    Zhang, Xin-Ying
    ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE, 2008, 64 : O1925 - U3779
  • [4] Microwave-induced Stereoselectivity in Synthesis of trans-4-Aryl-3-methyl-6-oxo-4,5,6,7-tetrahydro-2H-pyrazolo[3,4-b]pyridine-5-carbonitriles
    Rahmati, Abbas
    Kouzehrash, Alizadeh Meysam
    CHINESE JOURNAL OF CHEMISTRY, 2011, 29 (11) : 2373 - 2378
  • [5] 6,7-dihydro-4-(4-methoxyphenyl)-3-methyl-6-oxo-1-phenyl-1H-pyrazolo[3,4-b]pyridine-5-carbonitrile
    Zhang, Xin-Ying
    Li, Xiao-Yan
    Wang, Xia
    Li, Dong-Fang
    Fan, Xue-Sen
    ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE, 2008, 64 : O1888 - U3435
  • [6] SILICA SULFURIC ACID AS A SOLID ACID CATALYZED SYNTHESIS OF 4,5,6,7-TETRAHYDRO-2H-PYRAZOLO[3,4-b]PYRIDINE-5-CARBONITRILES AND 1,4-DIARYL-4,5-DIHYDRO-3-METHYL-1H-PYRAZOLO[3,4-b]PYRIDINE-6(7H)-ONES
    Mahdavinia, Gholam Hossein
    Rahmati, Abbas
    REVUE ROUMAINE DE CHIMIE, 2015, 60 (11-12) : 1025 - 1032
  • [7] Crystal structure of 3-methyl-1-phenyl-6-propylamino-1H-pyrazolo[3,4-b]-pyridine-5-carbonitrile
    Jasinski, Jerry P.
    Akkurt, Mehmet
    Mohamed, Shaaban K.
    Abdu-Allah, Hajjaj H. M.
    Albayati, Mustafa R.
    ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS, 2015, 71 : O766 - U464
  • [8] 6-Amino-3-methyl-4-(4-nitrophenyl)-1-phenylpyrazolo[3,4-b]pyridine-5-carbonitrile
    Zhang, Xin-Ying
    Li, Xiao-Yan
    Wang, Xia
    Fan, Xue-Sen
    Qu, Gui-Rong
    ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE, 2008, 64 : O689 - U1158
  • [9] Crystal structures of three homologues with increasing ring size: 2-methoxy-4-(thiophen-2-yl)5,6,7,8-tetrahydroquinoline-3-carbonitrile, 2-methoxy-4-(thiophen-2-yl)-6,7,8,9-tetrahydro-5H-cyclo- hepta[b]pyridine-3-carbonitrile and 2-methoxy-4(thiophen-2-yl)-5,6,7,8,9,10-hexahydrocycloocta- [b]pyridine-3-carbonitrile
    Hebishy, Ali M. S.
    Elgemeie, Galal H.
    Gouda, Lobna M.
    Jones, Peter G.
    ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS, 2023, 79 : 335 - +
  • [10] Theoretical and experimental investigations on the structure and vibrational spectra of 6-amino-3-methyl-1-phenyl-1H-pyrazolo-[3,4-b]pyridine-5-carboxylic acid and 6,7-dihydro-3-methyl-6-oxo-1-phenyl-1H-pyrazolo[3,4-b]pyridine-5-carbonitrile
    Bahgat, Khaled
    Jasem, Nazm Al-Den
    El-Emary, Talaat
    JOURNAL OF THE SERBIAN CHEMICAL SOCIETY, 2009, 74 (05) : 555 - 571