65 Result(s)
within
A. A. Markov
Chemistry
English
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Article
Evaluation of electrode-oriented properties of BaFe1−xCexO3−δ
The structure, oxygen non-stoichiometry, thermomechanical and electrical properties of perovskite-type BaFe1−xCexO3−δ (x = 0.05, 0.10, 0.15) were studied in the light of the potential use of these oxides as elect...
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Article
Investigation into the significant effect of CuO additive on the synthesis of ZrSiO4: phase formation and crystallization at low temperature
The ZrSiO4 has been synthesized with CuO as mineralizer by sol–gel route at low temperature. The mineralization effect of the CuO on mechanism of zircon formation at low temperature has been studied by high-tempe...
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Article
Synthesis and Compaction of Zirconium Nitride with Use of Zirconium Oxide and Air Supply
A multitemperature model of conjugated heat transfer during the synthesis of zirconium nitride is developed. The model includes the following parameters: the temperature of the solid phase consisting of microm...
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Article
Thermal and Concentration Expansion in the Synthesis of Barium Titanate in a Once-Through Reactor
A two-temperature model has been developed to analyze the thermal and concentration expansion in the carbon combustion synthesis of complex oxides. The determining system of equations included the Navier–Stoke...
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Article
High-temperature transport in perovskite-type Ca0.25Sr0.75Fe0.75Mo0.25O3 − δ
The comparative study of transport characteristics of SrFe0.75Mo0.25O3 − δ and Ca0.25Sr0.75Fe0.75Mo0.25O3 − δ was carried out in order to evaluate calcium substitution usability to improve functional properties o...
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Article
The First Heterometallic Acetate-Bridged Pt(II)–Pd(II) Complex: Synthesis, Structure, and Formation of Bimetallic PtPd2 Nanoparticles
The reaction of platinum acetate blue, empirically described as Pt(OOCMe)2.50, with palladium(II) acetate Pd3(μ-OOCMe)6 gave the first heterometallic acetate-bridged platinum(II) and palladium(II) complex Pd2Pt(μ...
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Article
Oxygen Nonstoichiometry and Transport Properties of Mixed-Conducting Ce0.6–xLa0.4Pr x O2–δ
The oxygen nonstoichiometry and electrical conductivity of fluorite-type solid solutions Ce0.6‒xLa0.4Pr x O2–δ (x = 0.1–0.2) were studied in the oxygen partial pressure range 10–...
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Article
Transport and Electrochemical Properties of SrFe(Al,Mo)O3–δ
In this work, effects of molybdenum do** on the crystal structure, stability, electrical conductivity, oxygen permeability and thermomechanical properties of Sr(Fe,Al)O3–δ-based perovskites, were studied. The e...
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Article
The impact of Ba substitution on high-temperature transport in lanthanum-strontium ferrite
Effect of barium content on structural, thermal, and transport properties of oxides La0.49Sr0.5–x Ba x FeO3–δ (х = 0, 0.25, 0.50) was studied wit...
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Article
Defect formation, ordering, and transport in SrFe1–x Si x O3–δ (x = 0.05–0.20)
Oxygen nonstoichiometry of perovskite-like SrFe1–x Si x O3–δ (x = 0.05–0.20), studied by thermogravimetric analysis and coulometric titration in ...
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Article
Electrical conductivity and carrier mobility in Ca1–x Pr x MnO3–δ manganites
The electrical conductivity (σ) of Ca1–x Pr x MnO3–δ (х = 0–0.15) manganites with a perovskite-like structure has been measured by the four probe ...
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Article
Seebeck coefficient of Ca1–x Pr x MnO3–δ paramagnetic manganites
The Seebeck coefficient (S) of Ca1–x Pr x MnO3–δ (х = 0, 0.05, 0.10, 0.15) manganites with a perovskite-like structure has been measured in air at...
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Article
Modeling of submicron complex oxides synthesis
The results of our studies of the model of synthesis of barium titanate and nickel–zinc ferrite powders including the mutual influence of the micro and macro scales characteristic for the synthesis of submicro...
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Article
Quantum-chemical simulation of the elementary step of the oxidation reactions of styrene and its derivatives involving 1О2 (1Δg)
The results of simulation of the oxidation reaction of styrene and its methyl (two isomers) and phenyl derivatives with molecular oxygen in the excited singlet state (1Δg) have enabled the conclusion that the rea...
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Article
Quantum-chemical simulation of unit process for the oxidation reactions of ethylene and its derivatives invoving 1O2 (1Δg)
The results of simulation of oxidation reactions of ethylene derivatives with different substituents (F atoms, CH3O and CH3 groups) and butadiene molecule with participation of 1O2 (1Δg) have shown the possibilit...
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Article
Palladium acetate complexes in the gas phase
New palladium acetate complexes, Pd2(OOCMe) 4 + , Pd2(OOCMe) 3 + , Pd2(OOCMe) 2 ...
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Article
Oxygen nonstoichiometry and defect equilibrium in Ca1–x Pr x MnO3–δ manganites
The content of oxygen in Ca1−x Pr x MnO3−δ (x = 0.1) material with perovskite-like structure is determined at 750–950°C and oxygen partial pressur...
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Article
Unusual platinum complexes in the gas phase
Previously unknown cationic platinum complexes Pt(C5H4N)(C5H5N)+ and Pt(C5H4N)+, where platinum atom forms an unusual three-membered metallacycle with a deprotonated pyridine molecule, were detected in the gas ph...
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Article
Oxygen non-stoichiometry and mixed conductivity of La0.5Sr0.5Fe1–x Mn x O3–δ
Oxygen non-stoichiometry, thermal expansion, and high-temperature transport properties of perovskite-type La0.5Sr0.5Fe1– x Mn x ...
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Article
Mechanism and energetics of 1,2-addition of dioxygen 1O2(1Δg) to ethylene
The optimal geometry and energy parameters for five electronic states of the {1O2 (1Δg) + C2H4} system that characterize the elementary reactions of two-step 1,2-addition giving the dioxetane molecule were calcul...
