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Title:Inhibition properties of TRITON-X-100 on ferritic stainless steel in sulphuricacid at increasing temperature
Authors:Fuchs-Godec, Regina (Author)
Žerjav, Gregor (Author)
Files:.pdf Acta_Chimica_Slovenica_2009_Fuchs-Godec,_Zerjav_Inhibition_properties_of_triton-x-100_on_ferritic_stainless_steel_in_sulphuric_acid_at_i.pdf (332,60 KB)
MD5: 62412842F8A5306DDEA5BB8A08753568
URL http://acta-arhiv.chem-soc.si/56/56-1-78.pdf
Work type:Scientific work (r2)
Typology:1.01 - Original Scientific Article
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:The inhibiting action of a non-ionic surfactant of the TRITON-X series (TRITON-X-100) on stainless steel type X4Cr13 in 1.0 M H2SO4 solution at five different temperatures was investigated by the potentiodynamic polarisation measurements. The inhibition efficiency has been calculated in the presence and in the absence of the inhibitor. The experimental data suggest that the inhibition efficiency increases with increasing concentration of the TRITON-X-100, and decreases with the increasing temperature. Adsorption of the non-ionic surfactant used here obeys the Flory- Huggins isotherm. The thermodynamic parameters, such as, the heat of adsorption, adsorption entropy, and the adsorption free energy, have been calculated by employing thermodynamic equations. Kinetic parameters, also been evaluated.
Keywords:non-ionic surfactants, corrosion inhibitors, sulphuric acid, Flory-Huggins adsorption isotherm
Year of publishing:2009
Number of pages:str. 78-85
Numbering:št. 1, Letn. 56
ISSN on article:1318-0207
COBISS_ID:13053718 New window
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Record is a part of a journal

Title:Acta Chimica Slovenica
Shortened title:Acta Chim. Slov.
Publisher:Slovensko kemijsko društvo
COBISS.SI-ID:14086149 New window


License:CC BY 4.0, Creative Commons Attribution 4.0 International
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:31.05.2012

Secondary language

Abstract:S klasično potenciodinamsko metodo smo proučevali inhibitorski vpliv neionskega surfaktanta iz serije TRITON-X (TRITON-X-100) na feritno nerjavno jeklo X4Cr13 v 1 M raztopini žveplove VI. kisline pri temperaturah 25, 30, 35, 40, in 50 °C. Eksperimentalni podatki kažejo, da inhibicijska učinkovitost sicer narašča z naraščajočo koncentracijo, istočasno pa se začne zniževati z naraščajočo temperaturo. Izbrani neionski surfaktant se na površino kovine adsorbira v skladu s Flory–Huggins-ovo adsorpcijsko izotermo. Ocenili smo kinetične parametre, z uporabo termodinamskih enačb pa smo izračunali še klasične termodinamske parametre (∆G$_{ads}$, ∆H$_{ads}$ in ∆S$_{ads}$).
Keywords:fizikalna kemija, neionske površinsko aktivne snovi, inhibitorji korozije, žveplova kislina, adsorpcijska izoterma Flory-Huggins


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