Results 41 to 50 of about 196,806 (297)

Revealing the reactivity of the Iridium trioxide intermediate for the oxygen evolution reaction in acidic media

open access: yes, 2019
We report a strategy to isolate IrO3 as an intermediate for the oxygen evolution reaction (OER). Its reactivity is studied using X-ray absorption spectroscopy, X-ray and neutron diffraction and X-ray photoelectron spectroscopy.
Gwenaëlle, Rousse   +10 more
core   +2 more sources

Inhibition Effect of Alkaloids Extract from Annona Squamosa Plant on the Corrosion of C38 Steel in Normal Hydrochloric Acid Medium

open access: yesInternational Journal of Electrochemical Science, 2010
In this work, an alkaloids extract from Annona squamosa plant have been studied as possible corrosion inhibitor for C38 steel in molar hydrochloric acid (1 M HCl). Potentiodynamic polarization and AC impedance methods have been used.
M. Lebrini, F. Robert, C. Roos
doaj   +1 more source

Solubility of Platinum in Acidic Media (I)-in Sulfuric Acid

open access: yesElectrochemistry, 2007
Platinum depositions have been observed in the electrolyte membrane of polymer electrolyte fuel cells (PEFCs) as in other types of fuel cells; PEFCs, MCFCs. The platinum solubility in the membrane must be a key issue to improve and guarantee the durability of PEFCs. In this basic study, the platinum solubility has been determined in an acidic medium as
MITSUSHIMA, Shigenori   +3 more
openaire   +2 more sources

Corrosion Inhibition by Isertia coccinea Plant Extract in Hydrochloric Acid Solution

open access: yesInternational Journal of Electrochemical Science, 2011
The effect of alkaloids extracted from Isertia coccinea plant (AEIC) on the corrosion of C38 steel in 1 M hydrochloric acid was investigated by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization techniques.
M. Lebrini   +3 more
doaj   +1 more source

Electrochemical and Theoretical Studies of Adsorption of Some Indole Derivates at C38 Steel/Sulfuric Acid Interface as Corrosion Inhibitors

open access: yesInternational Journal of Electrochemical Science, 2011
The inhibitive action of 9H-pyrido[3,4-b]indole (norharmane) and 1-Methyl-9H-pyrido[3,4-b]indole (harmane) on corrosion of C38 steel in 0.5 M H2SO4 solution was investigated through electrochemical techniques.
M. Lebrini, C. Roos, H. Vezin, F. Robert
doaj   +1 more source

Alkaloid Extract from Chimarrhis cymosa as a Corrosion Inhibitor for C38 Steel in 1M Hydrochloric Acid: Electrochemical and XPS Studies

open access: yesMetals
The inhibitory effect of the alkaloid extract from Chimarrhis cymosa on C38 steel corrosion in 1M HCl was examined through electrochemical investigations.
Mahado Said-Ahmed, Mounim Lebrini
doaj   +1 more source

Evaluation of Eulychnia acida Phil. (Cactaceae) Extracts as Corrosion Inhibitors for Carbon Steel in Acidic Media.

open access: yesInternational Journal of Electrochemical Science, 2016
The process of pickling to remove corrosion products in metal pipes requires the use of an acidic solution together with corrosion inhibitors to protect the metal. However, the use of synthetic/commercial inhibitors has caused environmental pollution and
R. Venegas   +4 more
doaj   +1 more source

Enteric-coating film effect on the delayed drug release of pantoprazole gastro-resistant generic tablets [version 1; peer review: 2 approved]

open access: yesF1000Research, 2023
Background: Enteric coating films in acidic labile tablets protect the drug molecule from the acidic environment of the stomach. However, variations in the excipients used in the coating formulation may affect their ability to provide adequate protection.
Amal Akour   +8 more
doaj   +1 more source

Corrosion behaviour of quasicrystal Al – Cu – Fe and Al – Ni – Fe alloys in acidic solutions [PDF]

open access: yesМеталознавство та обробка металів, 2018
Due to unique physical and mechanical properties of quasicrystals, the Al – Cu – Fe and Al – Ni – Fe alloys can be applied as coatings for parts working under friction, abrasive wear etc.
Sukhova O. V.   +3 more
doaj   +1 more source

Preparation of PtRu/C Electrocatalysts by Borohydride Reduction for Methanol Oxidation in Acidic and Alkaline Medium

open access: yesInternational Journal of Electrochemical Science, 2017
PtRu/C electrocatalysts were performed according to the borohydride reduction method and characterized by X–ray diffraction (XRD), energy dispersive analysis (EDX), transmission electron microscopy, cyclic voltammetry (CV) and polarization curves in ...
Monique Carolina Lima dos Santos   +4 more
doaj   +1 more source

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