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Inhibicijske lastnosti neionskega surfaktanta triton-x-405 v kislem mediju pri povišani temperaturi [Elektronski vir] = Inhibition properties of triton-x-405 on ferritic stainless steel in acid media at increasing temperature
Fuchs-Godec, Regina ; Pavlović, Miomir ; Tomić, Milorad V.
S klasično potenciodinamsko metodo smo proučevali inhibitorski vpliv neionskega surfaktanta, TRITON-X-405 na feritno nerjavno jeklo X4Cr13 v 1 mol L-1 raztopini žveplove VI. Kisline v temperaturnem ...območju 25 oC do 45 oC. Na podlagi meritev ugotavljamo, da učinkovitost inhibicije raste z večanjem koncentracije surfaktanta TRITON-X-405, medtem ko z naraščanjem temperature le-ta upada. Adsorpcija surfaktanta TRITON-X-405 sledi Flory- Hugginsovi adsorpcijski izotermi. Z uporabo termodinamskih enačb smo izračunali termodinamske količine (.Gads,, .Hads , .Sads). Nenazadnje smo izračunali tudi arrheniusov parameter in aktivacijsko energijo. Spreminjanje vrednosti aktivacijske energije v odvisnosti od koncentracije surfaktanta kaže na spremembo mehanizma adsorpcije surfaktanta TRITON-X-405 na površino jekla in sicer iz fizikalne adsorpcije do kemisorpcije.
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