Articles with "hydrochloric acid" as a keyword



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Microwave-assisted synthesis of malic acid involving hydrochloric acid as catalyst

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Published in 2017 at "Reaction Kinetics, Mechanisms and Catalysis"

DOI: 10.1007/s11144-017-1287-7

Abstract: The competing acid catalyzed reactions of fumaric acid (F) isomerization to form maleic acid (Mx) (reaction R1), and the hydration of F to malic acid (M) (reaction R2) were investigated under microwave heating. The kinetic experiments were… read more here.

Keywords: malic acid; microwave assisted; hydrochloric acid; reaction ... See more keywords
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Preparation and characterization of PVDF/CaCO3 composite membranes etched by hydrochloric acid

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Published in 2019 at "Environmental Science and Pollution Research"

DOI: 10.1007/s11356-019-06402-5

Abstract: This study aimed to improve the pore size, porosity, and hydrophobicity of polyvinylidene fluoride (PVDF) membranes for desalination by vacuum membrane distillation (VMD). New membranes were prepared via etching PVDF/calcium carbonate (CaCO3) composite membranes using… read more here.

Keywords: composite membranes; etched membranes; caco3 composite; membranes etched ... See more keywords
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Aluminum leaching from water treatment sludge using hydrochloric acid and kinetic study

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Published in 2020 at "Environmental Science and Pollution Research"

DOI: 10.1007/s11356-020-08922-x

Abstract: Water treatment sludge (WTS) is abundantly produced in the world; the waste contributes to the environmental problems. Therefore, for WTS utilization, aluminum leaching was employed using hydrochloric acid in this study. Al leaching efficiency increased… read more here.

Keywords: using hydrochloric; water treatment; treatment sludge; hydrochloric acid ... See more keywords
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Rare Earth Recovery from Fluoride Molten-Salt Electrolytic Slag by Borax Roasting-Hydrochloric Acid Leaching

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Published in 2019 at "JOM"

DOI: 10.1007/s11837-019-03732-0

Abstract: Fluoride molten-salt electrolytic slag is an important secondary resource for recovery of rare earth elements. In this study, the recovery of rare earths from this source was systemically investigated using borax roasting followed by hydrochloric… read more here.

Keywords: slag; recovery; earth recovery; rare earth ... See more keywords
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Electrochemical measurements for the corrosion inhibition of mild steel in 1 M hydrochloric acid by using an aromatic hydrazide derivative

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Published in 2017 at "Arabian Journal of Chemistry"

DOI: 10.1016/j.arabjc.2014.09.005

Abstract: Abstract The influence of an aromatic hydrazide derivative, 2-(3,4,5-trimethoxybenzylidene) hydrazinecarbothioamide (TMBHC) as corrosion inhibitor on mild steel in 1 M hydrochloric acid was studied by Tafel polarization and electrochemical impedance spectroscopy (EIS) technique. The results showed… read more here.

Keywords: mild steel; steel hydrochloric; hydrazide derivative; hydrochloric acid ... See more keywords
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Selective recovery of vanadium and scandium by ion exchange with D201 and solvent extraction using P507 from hydrochloric acid leaching solution of red mud.

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Published in 2017 at "Chemosphere"

DOI: 10.1016/j.chemosphere.2017.02.083

Abstract: D201 resin and P507 extractant diluted with sulfonated kerosene were used to respectively separate vanadium and scandium, and impurity ions from hydrochloric acid leaching solution of red mud. More than 99% of vanadium was selectively… read more here.

Keywords: acid leaching; leaching solution; solution; hydrochloric acid ... See more keywords

Localized oxidation of Zr-2.5Nb alloy in high temperature carbon dioxide environment containing hydrochloric acid

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Published in 2020 at "Corrosion Science"

DOI: 10.1016/j.corsci.2019.108236

Abstract: Abstract Zr-2.5Nb pressure tube alloy with uniform oxide layer was shown to undergo extensive nodular corrosion when exposed to a gas mixture of CO2 and O2 at high temperature in presence of hydrochloric acid. Substantial… read more here.

Keywords: nodular corrosion; alloy; high temperature; hydrochloric acid ... See more keywords
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Corrosion protection of mild steel in hydrochloric acid solution through the synergistic of alkylbenzimidazoles and semicarbazide pair – Electroanalytical and computational studies

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Published in 2017 at "Egyptian Journal of Petroleum"

DOI: 10.1016/j.ejpe.2016.06.001

Abstract: Abstract Hydrogen bonded interaction and synergistic effect on the corrosion protection properties of alkyl benzimidazoles and semicarbazide pair on mild steel in hydrochloric acid at 303, 308 and 313 K have been studied by polarization, electrochemical… read more here.

Keywords: mild steel; corrosion protection; hydrochloric acid; steel hydrochloric ... See more keywords
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Separation of Au(III) from other precious and base metals using 1-methoxy-2-octoxybenzene in acidic chloride media

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Published in 2018 at "Hydrometallurgy"

DOI: 10.1016/j.hydromet.2018.04.014

Abstract: Abstract Ethereal compounds act as good extractants for Au(III) from hydrochloric-acid media. We developed a novel aromatic ethereal compound 1-methoxy-2-octoxybenzene (o-MOB) as an extractant for Au(III). Au(III) extraction using o-MOB in hydrochloric-acid media reached equilibrium… read more here.

Keywords: precious base; iii; hydrochloric acid; methoxy octoxybenzene ... See more keywords
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The comprehensive utilization of oxidative hydrochloric acid leaching of anode slime bearing fluorine, arsenic and antimony

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Published in 2019 at "Hydrometallurgy"

DOI: 10.1016/j.hydromet.2018.11.006

Abstract: Abstract This work presented a new strategy to comprehensive utilization of hydrochloric acid leaching solution of anode slime bearing fluorine, arsenic, and antimony. Firstly, the fluorosilicic acid and fluorosilicates in the leaching solution were removed… read more here.

Keywords: arsenic antimony; comprehensive utilization; hydrochloric acid; acid ... See more keywords
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Preparation of LiNi0.8Co0.1Mn0.1O2 cathode materials from the hydrochloric acid leaching of laterite: A short and low-cost process

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Published in 2020 at "Hydrometallurgy"

DOI: 10.1016/j.hydromet.2020.105370

Abstract: Abstract The direct preparation of LiNi0.8Co0.1Mn0.1O2 (LNCM811) cathode materials from the hydrochloric acid leaching of laterite are promising; however, there are Cl− ions and other impurities in the hydrochloric acid leaching solution, thereby limiting the… read more here.

Keywords: acid leaching; cathode materials; process; solution ... See more keywords