Results 21 to 30 of about 415,146 (302)

Fluoroacidity evaluation in molten salts [PDF]

open access: yes, 2011
The fluoroacidity of several alkaline fluoride media was studied by monitoring the concentration of electroactive species which is decreasing versus time due to a gas species release, such as silicon fluorides, as indicated by the reaction: SiF(4+x)x ...
Bieber, Anne-Laure   +5 more
core   +4 more sources

Sphalerite Leaching in Acid Media: a Review

open access: yesMetallurgical and Materials Data, 2023
The reserves of rich ores, from which the production of zinc by the existing conventional roasting-leaching-electrowinning process is technologically possible and economically justified, are decreasing year by year. For this reason, increasing attention has been directed towards researching the possibility of obtaining zinc from complex polymetallic ...
Miroslav D. Sokić   +2 more
openaire   +2 more sources

Electrochemical oxidation of oxalic acid and hydrazinium nitrate on platinum in nitric acid media [PDF]

open access: yes, 2012
Several studies in the literature have investigated the electrochemical effects of oxalic acid and hydrazine on various materials in neutral (pH buffered to 7), basic or weakly acidic media (pH 6).
Féraud, Jean-Pierre   +4 more
core   +2 more sources

Heterogeneous Reactions of Epoxides in Acidic Media [PDF]

open access: yesThe Journal of Physical Chemistry A, 2012
Epoxides have recently been identified as important intermediates in the gas phase oxidation of hydrocarbons, and their hydrolysis products have been observed in ambient aerosols. To evaluate the role of epoxides in the formation of secondary organic aerosols (SOA), the kinetics and mechanism of heterogeneous reactions of two model epoxides, isoprene ...
Vinita, Lal   +5 more
openaire   +2 more sources

Alkaloids Extract from Palicourea guianensis Plant as Corrosion Inhibitor for C38 Steel in 1 M Hydrochloric Acid Medium

open access: yesInternational Journal of Electrochemical Science, 2011
Corrosion inhibition effect of alkaloids extract from Palicourea guianensis plant (AEPG) on C38 steel in 1 M HCl medium has been investigated by potentiodynamic polarization and electrochemical impedance spectroscopy. The polarization studies showed that
M. Lebrini, F. Robert, C. Roos
doaj   +1 more source

Corrosion Studies of C38 Steel by Alkaloids Extract of a Tropical Plant Type

open access: yesInternational Journal of Electrochemical Science, 2011
Alkaloids extract of Aspidosperma album was tested as corrosion inhibitor for C38 steel in 1 M HCl by using polarization and electrochemical impedance spectroscopy (EIS).
M. Faustin   +3 more
doaj   +1 more source

Super-Nernstian Shifts of Interfacial Proton-Coupled Electron Transfers : Origin and Effect of Noncovalent Interactions [PDF]

open access: yes, 2015
The support of the University of Aberdeen is gratefully acknowledged. C.W. acknowledges a summer studentship from the Carnegie Trust for the Universities of Scotland. E.P.M.L.
Andreu, Rafael   +7 more
core   +2 more sources

Natural diatomite (Rudovci, Serbia) as adsorbent for removal Cs from radioactive waste liquids [PDF]

open access: yesScience of Sintering, 2015
The removal of Cs (I) ions from aqueous solution was studied using natural diatomite as adsorption materials originated from Rudovci, Serbia. The microstructure of natural diatomite has been characterized by X-ray diffraction (XRD), scanning ...
Nenadović S.   +6 more
doaj   +1 more source

Investigation on the dynamic behaviour and corrosion characteristics of hexagonal boron nitride (h-BN) and zirconium dioxide (ZrO2) reinforced Al7075 composite

open access: yesJournal of Alloys and Metallurgical Systems, 2023
Stir casting was used to make Al7075 composites with 3% h-BN and different amounts of ZrO2 (2%, 4%, and 6% by weight). Damping behaviour and corrosion resistance corresponding to the reinforcement percentage were investigated. Damping was evaluated using
B. Kuldeep   +5 more
doaj   +1 more source

Restructuring highly electron-deficient metal-metal oxides for boosting stability in acidic oxygen evolution reaction

open access: yesNature Communications, 2021
The poor catalyst stability for oxygen evolution in acidic media has been a long-time issue. Here, authors demonstrate iridium on MoO3 exhibits a low overpotential for oxygen evolution and excellent durability in acidic media due to the high oxidation ...
Xinghui Liu   +11 more
doaj   +1 more source

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