FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2226804939> ?p ?o ?g. }

• W2226804939 abstract "In this work, the some necessary conditions for using Electrochemical Impedance Spectroscopy (EIS) to study glassy carbon (GC), carbon steel, copper, brass and zinc/biodiesel systems were evaluated. On the best knowledge of the authors, only one study of biodiesel, which was produced via ethylic route, using EIS has been previously developed [1]. Soybean biodiesel produced via methylic route was used for electrochemical studies. The biodiesel physical parameters and composition obey the ANP recommendation [2]. Two electrodes identical as possible and parallel positioned to expose 1 cm to the biodiesel were used. To retain the biodiesel between the electrodes and prevent its leakage, a porous membrane (non-textured cloth, NTC) soaked in biodiesel was used. EIS measurements were performed using a two-electrode electrochemical cell setup in biodiesel by applying different AC potential perturbations. The following AC potential values were applied after 1 min of contact of electrodes with biodiesel: 0.05, 0.10, 0.20, 0.50, 1.00 and 1.20 V(rms) for all studied materials; for carbon steel 1.50 and 3.00 V(rms) were also applied. Five sequential replicates impedance diagrams were recorded with 12 points / frequency decade for each AC potential perturbation. The consistency of the electrochemical impedance data to the Kramers-Kronig Transform was checked using a measurement model based on Voight circuit according to [3] and the Kramers-Kronig Transform from the GAMRY ECHEM ANALYST software. All impedance data were consistent with the KK relations until at least 100 mHz. For the different AC potential amplitude used, the linearity of the impedance response was analyzed determining, for frequencies around 10000, 1000, 100, 37, 10 and 1 Hz, the ratio of | Z |new / | Z | ampl = 50 mV (rms) for each new AC potential applied, and plotted against the amplitude (rms) values according to [4]. For all systems studied the response obtained by applying the smaller amplitude (0.05 V(rms)), except zinc for which 0.10 V(rms) was chosen, was considered linear and taking as valid for further linear behavior investigation. The ratio values versus the AC potential perturbation applied were near 1 indicating a linear behavior (Table 1). Each average value was obtained as the average of 5 replicates for each sample and perturbation mentioned above, which means that it is the average of at least 30 impedance diagrams. The same comprehension is valid for the standard deviation. Figure 1 depicts EIS diagrams for all systems studied by applying 0.20 V(rms). The electrical resistance of biodiesel seems to dominate the response at least at high and middle frequency regions (Table 2). At low frequencies (below 100 mHz) it is possible some contribution of the adsorption/desorption and charge transfer processes. For instance, carbon steel showed low corrosion, which was confirmed by chemical tests performed in the NTC membrane. Tests of immersion for days showed that copper, zinc and brass had the surface color changed, probably due to some reaction of their oxides with fatty acid residues present in biodiesel [5]. Table 1: Linearity tests for all systems analyzed. | Z |new / | Z | ampl = 50 mV (rms) SYSTEM AVERAGE STAND. DEV. GG 1.00 0.02 Steel 0.98 0.01 Copper 1.10 0.03 Brass 0.97 0.02 Zinc* 1.03 0.01 * modulus of impedance used as valid was 0.10 V(rms)." @default.
• W2226804939 created "2016-06-24" @default.
• W2226804939 date "2012-01-01" @default.
• W2226804939 modified "2023-09-26" @default.
• W2226804939 title "Electrochemical Impedance Spectroscopy to Characterize Different Materials in Soybean Biodiesel Medium" @default.
• W2226804939 doi "https://doi.org/10.1149/ma2012-02/20/2130" @default.
• W2226804939 hasPublicationYear "2012" @default.
• W2226804939 type Work @default.
• W2226804939 sameAs 2226804939 @default.
• W2226804939 citedByCount "0" @default.
• W2226804939 crossrefType "journal-article" @default.
• W2226804939 hasBestOaLocation W22268049391 @default.
• W2226804939 hasConcept C119599485 @default.
• W2226804939 hasConcept C121332964 @default.
• W2226804939 hasConcept C127413603 @default.
• W2226804939 hasConcept C147789679 @default.
• W2226804939 hasConcept C161790260 @default.
• W2226804939 hasConcept C17525397 @default.
• W2226804939 hasConcept C17829176 @default.
• W2226804939 hasConcept C178790620 @default.
• W2226804939 hasConcept C185592680 @default.
• W2226804939 hasConcept C192562407 @default.
• W2226804939 hasConcept C32891209 @default.
• W2226804939 hasConcept C42360764 @default.
• W2226804939 hasConcept C52859227 @default.
• W2226804939 hasConcept C52896960 @default.
• W2226804939 hasConcept C62520636 @default.
• W2226804939 hasConcept C7040849 @default.
• W2226804939 hasConceptScore W2226804939C119599485 @default.
• W2226804939 hasConceptScore W2226804939C121332964 @default.
• W2226804939 hasConceptScore W2226804939C127413603 @default.
• W2226804939 hasConceptScore W2226804939C147789679 @default.
• W2226804939 hasConceptScore W2226804939C161790260 @default.
• W2226804939 hasConceptScore W2226804939C17525397 @default.
• W2226804939 hasConceptScore W2226804939C17829176 @default.
• W2226804939 hasConceptScore W2226804939C178790620 @default.
• W2226804939 hasConceptScore W2226804939C185592680 @default.
• W2226804939 hasConceptScore W2226804939C192562407 @default.
• W2226804939 hasConceptScore W2226804939C32891209 @default.
• W2226804939 hasConceptScore W2226804939C42360764 @default.
• W2226804939 hasConceptScore W2226804939C52859227 @default.
• W2226804939 hasConceptScore W2226804939C52896960 @default.
• W2226804939 hasConceptScore W2226804939C62520636 @default.
• W2226804939 hasConceptScore W2226804939C7040849 @default.
• W2226804939 hasLocation W22268049391 @default.
• W2226804939 hasOpenAccess W2226804939 @default.
• W2226804939 hasPrimaryLocation W22268049391 @default.
• W2226804939 hasRelatedWork W2016492651 @default.
• W2226804939 hasRelatedWork W2036471634 @default.
• W2226804939 hasRelatedWork W2095415143 @default.
• W2226804939 hasRelatedWork W2226804939 @default.
• W2226804939 hasRelatedWork W2400160189 @default.
• W2226804939 hasRelatedWork W2407199796 @default.
• W2226804939 hasRelatedWork W2784974900 @default.
• W2226804939 hasRelatedWork W2982202431 @default.
• W2226804939 hasRelatedWork W3009464499 @default.
• W2226804939 hasRelatedWork W3085192578 @default.
• W2226804939 isParatext "false" @default.
• W2226804939 isRetracted "false" @default.
• W2226804939 magId "2226804939" @default.
• W2226804939 workType "article" @default.