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   A 10


    A coulostatic investigation of the hydrogen electrode in molten carbonates [Text] / V. P. Bychin, M. A. Zvezdkin, N. N. Batalov, V. A. Prusov // Melts. - 1992. - V. 6, N 5. - P284-289. - Bibliogr.: 12 ref.

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ХИМИЯ -- ИССЛЕДОВАНИЕ КУЛОНОСТАТИЧЕСКОЕ -- КУЛОНОСТАТИЧЕСКОЕ ИССЛЕДОВАНИЕ -- ЭЛЕКТРОДЫ ЗОЛОТЫЕ -- ЗОЛОТЫЕ ЭЛЕКТРОДЫ -- КАРБОНАТЫ РАСПЛАВЛЕННЫЕ -- РАСПЛАВЛЕННЫЕ КАРБОНАТЫ -- ВОДОРОД -- H2 -- ЭЛЕКТРОДЫ ВОДОРОДНЫЕ -- ВОДОРОДНЫЕ ЭЛЕКТРОДЫ -- РАСПЛАВЫ КАРБОНАТНЫЕ -- КАРБОНАТНЫЕ РАСПЛАВЫ -- КАРБОНАТ ЛИТИЯ -- КАРБОНАТ КАЛИЯ -- КАЛИЙ -- ЛИТИЙ -- K -- Li -- He -- ГЕЛИЙ -- He-H2 -- K2CO3 -- Li2CO3
Аннотация: Some systematic problems are considered for appling the coulostat is given and its operation is shown with an example of calculation of the parameters, viz., resistivity and capacitance of the equivalent electrochemical cel. The transfer current and capacitance are measured at a gold electrode in a eutectic of potassium and lithium carbonates in the temperature range 550-750 C and at hydrogen partial pressures of 0,2-0,8 atm in the starting He-H2 mixture
Рассмотрены некоторые методические проблемы применения кулоностатического метода определения параметров электродного процесса в расплавленных солях. Приведена принципиальная схема кулоностата и показана его работоспособность на примере расчета параметров сопротивления и емкости эквивалента электрохимической ячейки. Измерены токи обмена и емкости на золотом электроде в эвтектике карбонатов калия и лития в интервале 550-750 C и при парциальных давлениях водорода 0,2-0,8 атм в исходной смеси He-H2

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   A 10


    A modifying of a metal surface by high-temperature plasma impulse as a method of improvement of aluminum corrosion resistance in molten salts [Text] / L. A. Yolshina, V. Y. Kudyakov, V. N. Lyashenko, S. S. Tserevitinov // Progress in Molten Salt Chemistry: Proceedings from the EUCHEM 2000 Conference on Molten Salts (Denmark, August 20-25, 2000). - 2000. - V. 1. - P581-585

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
Al2O3 -- ОКСИД АЛЮМИНИЯ -- АЛЮМИНИЙ -- Al -- СОЛИ РАСПЛАВЛЕННЫЕ -- КОРРОЗИЯ АЛЮМИНИЯ -- РАСПЛАВ СОЛЕВОЙ -- CsCl-NaCl-NaNO3 -- Cs -- Na -- CsCl -- NaCl -- NaNO3 -- ХЛОРИД НАТРИЯ -- НАТРИЙ -- ХЛОРИД ЦЕЗИЯ -- ЦЕЗИЙ -- НИТРАТ НАТРИЯ -- НИТРАТ РАСПЛАВЛЕННЫЙ
Аннотация: It has been investigated corrosion and electrochemical behavior of aluminum, which was pretreated by high-temperature impulse plasma in hydrogen, helium and oxygen media. Plasma surfacing in all gaseous atmospheres leads to the formation of a thin adhesive film of amorphous Al2O3. Thus obtained scale is protective in the temperature range 790-830 K as to chloride melt

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   A 67


    Application of Solid oxide proton-conducting electrolytes for amperometric analysis of hydrogen in H2+N2+H2O gas mixtures / A. Kalyakin, G. Fadeyev, A. Demin, E. Gorbova, A. Brouzgou, A. Volkov, P. Tsiakaras // Electrochimica Acta. - 2014. - Vol. 141. - P .120-125. - Bibliogr. : p. 125 (41 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ТВЕРДЫЕ ЭЛЕКТРОЛИТЫ -- ВОДОРОД -- ДАТЧИКИ
Аннотация: Amperometric hydrogen sensors based on proton-conducting solid electrolytes of La0.95Sr0.05YO3, CaTi0.95Sc0.05O3 and CaZr0,9Sc0.1O3 compositions are prepared and investigated in the present work. The influence of the sensor design on its own characteristics is also examined. It is shown that a solid electrolyte used in the form of discs with cavities significantly simplifies the design of this type of sensors. A sensor based on La0.95Sr0.05YO3 electrolyte with fully sealed junction between discs is suitable for the analysis of mixtures with high H2 content. It is found that by increasing H2 content from 10 to 98% the limiting current increases from 0.25 to 2.25 mA (at 750 mV). It is also found that the sensor based on La0.95Sr0.05YO3 with discs sealed in two points as well as the sensor based on CaZr0,9Sc0.1O3 with fully sealed junction are suitable for the analysis of mixtures with low H2 content (0.5-2%). For the above cases, the limiting current at 2% H2 reaches 3.5 and 0.5 mA (at 750 mV), respectively. CaTi0.95Sc0.05O3 is not suitable to be used as a hydrogen sensor. In all the examined systems, steam content does not affect sensors’ behavior and high operating temperatures (850 °C) increase the range of sensors’ hydrogen measuring concentration capacity.

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   C 47


    Characterization of Ni-cermet degradation phenomena I. Long term resistivity monitoring, image processing and X-ray fluorescence analysis / M. V. Ananyev , D. I. Bronin, D. A. Osinkin, V. A. Eremin, R. Steinberger-Wilckens, L. G. J. De Haart, J. Mertens . - [S. l. : s. n.]. - Б. ц.

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ПОРИСТОСТЬ -- УДЕЛЬНОЕ СОПРОТИВЛЕНИЕ -- ОКСИД ИТТРИЯ -- ОКСИД ЦИРКОНИЯ
Аннотация: The present paper is devoted to Ni-cermet degradation phenomena and places emphasis on experimental approaches and data handling. The resistivity of Ni-YSZ cermet (nickel and 8 mol.% yttria stabilized zirconia) anode substrates was monitored during 3000 h at 700 and 800 °C in a gas mixture of 80 vol.% water vapor and 20 vol.% hydrogen. The experimentally evaluated dependence of resistivity of the Ni-YSZ substrates can be well described by exponential decay functions. Post test analysis by image processing and XRF (X-ray fluorescence) analysis for characterization of the microstructure and elemental composition were carried out for virgin samples and after 300, 1000 and 3000 h of exposure time. The 3D-microstructure was reconstructed using an original spheres packing algorithm. Two processes leading to the Ni-YSZ degradation were observed: Ni-phase particle coarsening and volatilization. The effect of these processes on resistivity and such microstructure parameters as porosity, Ni-phase fraction, Ni and YSZ phases particle size distributions, triple phase boundary length, and tortuosity factor are considered in this paper.

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   C 47


    Charge transfer in mixed proton, oxygen ion and electron solid oxide conductor [Текст] / A. K. Demin, E. V. Gorbova, M. V. Glumov, P. E. Tsiakaras // Ionics. - 2005. - Vol. 11, № 3-4. - С. 289-293. - Библиогр. : с. 293 (3 назв.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
MASS TRANSFER -- PROTON-OXYGEN
Аннотация: Analysis of the equivalent scheme of the mixed proton-oxygen ion-electron conductor (MPOEC) allowed to obtain relationships between parameters of the membrane (total conductivity and transfer numbers) and parameters of the charge and mass transfer through the membrane (partial ion and electron currents, the specific flux of hydrogen at the cathode membrane surface) under regime of electrochemical reforming. It was stated that presence of proton conductivity in addition to oxygen ion conductivity led to increase of total flux of produced hydrogen. However, under conditions typical for the electrochemical reforming of methane into hydrogen, the specific hydrogen flux is about four times lower in the case when the membrane has proton-electron conductivity than in the case when the membrane has oxygen ion-electron conductivity.

\\\\Cserver\\dist\\НБО\\Cтатьи БД ИВТЭ\\Ionics\\2005, V. 11, № 3-4, С. 289-293.pdf
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   C 74


    Conductivity of Gd-doped BaCeO3 protonic conductor in Н2–Н2О–О2 atmospheres / D. A. Medvedev, E. V. Gorbova, A. K. Demin, P. Tsiakaras // International Journal of Hydrogen Energy. - 2014. - Vol. 39, № 36. - P21547-21552. - Bibliogr. : p. 21551-21552 (31 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ПРОВОДИМОСТЬ ИОННАЯ -- ПРОВОДИМОСТЬ ПРОТОННАЯ -- МАТЕРИАЛЫ КЕРАМИЧЕСКИЕ -- ТВЕРДЫЕ ЭЛЕКТРОЛИТЫ
Аннотация: In the present investigation, a radically new and simple method of evaluation of the proton conductivity is proposed. This method is based on the conductivity measurement of ceramic materials depending on the oxygen partial pressure (pO2) at a gradual transition from the atmosphere of pure oxygen to one of wet hydrogen: O2 → O2 (H2O) → H2O (O2) → H2O → H2O (H2) → H2 (H2O). Experimental data of total conductivities for the solid electrolyte BaCe0.9Gd0.1O3–δ (BCG) have been fitted with modeling ones in accordance with the defect chemistry model at 600, 750 and 900 °C. Experimental and theoretical relationships correlate well with each other, demonstrating the success of the proposed model description. Analysis of dependences of the total conductivity as a function of pO2 with simultaneous change of pO2 and water partial pressure (pH2O) allows the estimation of the contribution of the partial conductivities (protonic, oxygen ionic, electronic) in the total one and the identification of the areas of purely ionic and purely protonic conductivity. Using the obtained data, some transport phenomena of proton-conducting materials, which were not previously interpreted, are discussed.

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   D 38

    Demin, A.
    Model of a high temperature electrolyzer based onsolid oxide co-ionic electrolyte [] / A. Demin, E. Gorbova, P. Tsiakaras // IHEC 2005 : Proc. of Int.Hydrogen Energy Congr. and Exhibition (Istunbul, Turkey, 13-15 July 2005). - 2005. - Режим доступа : www.ichet.org/ihec2005/oral.php

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
HIGH TEMPERATURE ELECTROLYZER -- SOLID ELECTROLYTE -- OXIDE CO-IONIC ELECTROLYTE

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   D 48


    Deuterium diffusion in proton conductors La0.9Sr0.1ScO3 -δ and BaZr0.9Y0.1O3 -δ at room temperature / V. B. Vykhodets, T. E. Kurennykh, O. A. Nefedova, V. P. Gorelov, A. Yu. Stroeva, V. B. Balakireva, E. V. Vykhodets, S. I. Obukhov // Solid State Ionics. - 2014. - P. 152-156. - Bibliogr. : p. 156 (15 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
КОЭФФИЦИЕНТ АКТИВНОСТИ КИСЛОРОДА -- ПРОТОННЫЕ ПРОВОДНИКИ -- ПАР
Аннотация: Room-temperature measurements of diffusion coefficients for deuterium in proton conductors La0.9Sr0.1ScO3 -δ and BaZr0.9Y0.1O3 -δ which contain dissolved H2O vapor have been performed. The concentration of oxygen structure vacancies in oxides after treatment in vapor was close to zero. A diffusion source of deuterium was created by ion implantation; measurement of the concentration–distance distribution of deuterium in samples was performed in situ during implantation. The NRA technique and 2H(d,p)3H reaction at an energy of the incident beam of 650 keV were used. For the initial and boundary conditions of the diffusion problem which were realized in the work, a solution of the inhomogeneous Fick equation was obtained. Using the technique developed, measurements of the diffusion coefficients for hydrogen in proton conductors were for the first time performed directly. For the BaZr0.9Y0.1O3 -δ oxide, the directly gained values of diffusion coefficients agree rather well with those obtained from the proton conductivity with the use of Nernst–Einstein equation

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   E 43


    Electrical conductivity of CaZr0.9Y0.1O3−δ films deposited from liquid solutions / L. A. Dunyushkina, S. V. Smirnov, V. M. Kuimov, V. P. Gorelov // International Journal of Hydrogen Energy. - 2014. - Vol. 39, № 32. - P18385-18391

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ОСАЖДЕНИЕ ХИМИЧЕСКОЕ -- ТВЕРДОСТЬ ПЛЕНКИ -- ПРОВОДИМОСТЬ ПРОТОННАЯ
Аннотация: CaZr0.9Y0.1O3−δ (CZY) films were fabricated by chemical solution deposition (CSD) from ethanol-based liquid solutions. The films were deposited on single crystals of yttria-stabilized zirconia (YSZ) in (100), (110) and (111) crystallographic orientations. The structural, mechanical and electrical properties of the films have been studied by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), and nanoindentation and impedance spectroscopy methods. XRD and SEM results have shown that the films were polycrystalline. Effect of the substrate orientation on the microstructural, mechanical and electrical properties of CZY films has been examined. The films deposited on (110)-substrates consist of the largest grains; show the highest values of hardness and electrical conductivity. Conductivity of CZY film on (110)-substrates increases with rise in humidity which proves proton transport in the films

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10.

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   E 43


    Electrisity from ethanol fed SOFCs: the expectations for sustainable development and technological benefits [Текст] / S. Douvartzides, F. Coutelieris, A. Demin, P. Tsiakaras // International Journal of Hydrogen Energy. - 2004. - Vol. 29, № 4. - С. 375-379.

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
SUSTAINABLE DEVELOPMENT -- TECHNOLOGICAL BENEFITS -- ETHANOL FED SOFCs

\\\\Cserver\\dist\\НБО\\Cтатьи БД ИВТЭ\\International Journal of Hydrogen Energy\\2004, V. 29, № 4, С. 375-379.pdf
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11.

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   E 43


    Electrochemical properties of ceramic membranes based on SrTi0.5Fe0.5O3−δ in reduced atmosphere / A. Murashkina, V. Maragou, D. Medvedev, V. Sergeeva, A. K. Demin, P. Tsiakaras // International Journal of Hydrogen Energy. - 2012. - Vol. 37, № 19. - С. 14569-14575. - Bibliogr. : p. 14675 (23 ref.) . - ISSN 03060-319

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ТЕМПЕРАТУРА -- СВОЙСТВА -- СОПРОТИВЛЕНИЕ ЭЛЕКТРОННОЕ
Аннотация: The present work aims at the investigation of the electrochemical properties of SrTi0.5Fe0.5O3−δ as a membrane material for hydrogen production via electrochemical reforming. The dependence of the electrical conductivity on the oxygen partial pressure, as well as the oxygen permeability in the range of 10−20 atm ≤ ≤ 10−14 atm is examined. The oxygen permeability is measured by an electrochemical method. The dependences of ion current as a function of the electromotive force (EMF) at various temperatures, oxygen partial pressures and the membrane surface conditions (rough and activated by PrOx) are studied. Finally, the values of hydrogen flux at different temperatures are calculated and a long term investigation during 600 h at = 10−19 atm, T = 1173 K is carried out. According to the present results, the permeation current increases with the increase of temperature, oxygen partial pressure gradient and activation by PrOx. The long term investigation shows that the electrical resistance of the SrTi0.5Fe0.5O3−δ ceramic membrane increases by 10%, possibly due to the formation of micro-domains into the material's volume and the decrease in the grain boundary conductivity, because of the segregation of dopant-rich layers near the grain boundaries.

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12.

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   E 43


    Electrodes for solid electrolyte sensors for the measurement of CO and H2 content in air / G. Fadeyev, A. Kalakin, A. Demin, A. Volkov, A. Brouzgou, P. Tsiakaras // International Journal of Hydrogen Energy. - 2013. - Vol. 38, № 30. - С. 13484-13490.

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ЭЛЕКТРОД -- ТВЕРДЫЕ ЭЛЕКТРОЛИТЫ

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13.

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   E 99

    Ezin, A. N.
    Theoretical underpinnings of a method of reduction of operating temperature of solid oxide fuel cells under resonant light irradiation / A. N. Ezin, A. L. Samgin // International Journal of Hydrogen Energy. - 2015. - Vol. 40, № 29. - P8948-8957. - Bibliogr. : p. 8956-8957 (34 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ТОПЛИВНЫЕ ЭЛЕМЕНТЫ -- ПЕРЕНОС ПРОТОННЫЙ
Аннотация: This study examines potential benefits of adopting ultrashort optical pulses in fuel cell technology. General principles for jumping migration of protons in resonant laser fields have been elaborated. We find that, depending upon the frequency of phonon assistance, the effective activation energy for migration can be strongly diminished when excitation pulses are used. The obtained results indicate that at room temperature the picosecond-laser-induced proton transfer in rutile type oxides is much faster than that for thermal activation. Our estimates are in good agreement with time-resolved measurements for rutile samples excited by infrared light. The fundamentals of this transfer process are briefly analyzed in the light of structure diffusion and vibrational mode models. The most important conclusion to emerge from our work is that the use of the optical stimulation shows considerable promise as a means for decreasing the operating temperature of solid oxide fuel cells based on proton hopping transport.

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14.

Инвентарный номер: нет.

   F 96


    Fuel options for solid oxide fuell cells: a thermodynamic analysis [Текст] / S. L. Douvartzides, F. A. Coutelieris, A. K. Demin, P. Tsiakaras // AIChE Journal. - 2003. - Vol. 49, № 1. - С. 248-257.

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ТЕРМОДИНАМИЧЕСКИЙ АНАЛИЗ
Дескрипторы: FUEL OPTIONS -- SOLID OXIDE FUELL
Аннотация: The eligibility of natural gas (methane), methanol, ethanol, and gasoline as fuels for the generation of electrical power in solid oxide fuel cells (SOFCs) is discussed in terms of efficiency. Each raw fuel was assumed to be processed in a steam reformer to provide a hydrogen-rich gas mixture to the SOFC feedstream. An SOFC system, consisting of an electrochemical section and a reformer, was analyzed thermodynamically assuming initial steam/fuel feed ratios at conditions where carbon deposition is thermodynamically impossible, at atmospheric total pressure, and in the temperature range of 800-1,200 K. Results were obtained in terms of both electromotive force (emf) output and efficiency. Methane seems to be the most appropriate fuel option, with an SOFC system efficiency close to 96%. Furthermore, ethanol and methanol were very promising alternative options (94% and 91%, respectively), while gasoline (83%) utilization requires special reforming conditions.

\\\\Cserver\\dist\\НБО\\Cтатьи БД ИВТЭ\\AIChE Journal\\2003, V. 49, № 1, С. 248-257.pdf
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15.

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    High-performance anode-supported solid oxide fuel cell with impregnated electrodes / D. A. Osinkin, N. M. Bogdanovich, S. M. Beresnev, V. D. Zhuravlev // Journal of Power Sources. - 2015. - Vol. 288. - P20-25
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ТОТЭ -- ПРОПИТКА -- СИНТЕЗ ГОРЕНИЯ -- СеО2
Аннотация: The 61%NiO + 39%Zr0.84Y0.16O1.92 (NiO-YSZ) and 56%NiO + 44%Zr0.83Sc0.16Ce0.01O1.92 (NiO-CeSSZ) composite powders have been prepared using two-steps and one-step combustion synthesis, respectively. The Ni-YSZ anode substrate with a low level of electrical resistance (less than 1 mOhm cm) and porosity of about 53% in the reduced state was fabricated. The functional layer of the anode with the high level of electrochemical activity was made of NiO-CeSSZ. The single anode-supported solid oxide fuel cell with the bi-layer Ni-cermet anode, Zr0.84Sc0.16O1.92 film electrolyte and the Pt + 3% Zr0.84Y0.16O1.92 cathode was fabricated. The power density and the U–I curves of the fuel cell at initial state and after impregnation of the cathode and anode by praseodymium and cerium oxides, respectively, have been measured at different temperatures. The maximum of power density of the initial fuel cell was 0.35 W cm−2 at conditions of wet hydrogen (air) supply to the anode (cathode) at 900 °C. After the electrodes were impregnated, the value of power density increased by seven times and was approximately 2.4 W cm−2 at 0.6 V. It was suggested that after the electrodes impregnation the polarization resistance of the fuel cell was determined by the gas diffusion in the supported anode.

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16.

Инвентарный номер: нет.

   H 99


    Hydrogen isotope exchange in proton-conducting oxides during proton and deuteron irradiation / E. V. Vykhodets, T. E. Kurennykh, S. I. Obukhov, V. P. Gorelov , V. B. Balakireva, E. V. Vykhodets // Journal of Experimental and Theoretical Physics Letters (Jetp Letters). - 2013. - Vol. 97, № 11. - 624-627.

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ВОДОРОД -- ПРОТОННАЯ ПРОВОДИМОСТЬ

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17.

Инвентарный номер: нет.

   H 99


    Hydrogen production aided by new (1−x)SrTi0.5Fe0.5O3–δ–xCe0.8(Sm0.8Sr0.2)0.2O2–δ (MIEC) composite membranes / A. Murashkina, E. Pikalova , D. Medvedev, A. Demin, P. Tsiakaras // International Journal of Hydrogen Energy. - 2014. - Vol. 39, № 24. - P. 12472-12479

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
КОМПОЗИЦИОННЫЕ МАТЕРИАЛЫ -- ПРОИЗВОДСТВО КИСЛОРОДА -- АМБИПОЛЯРНАЯ ПРОВОДИМОСТЬ -- ПРОНИЦАЕМОСТЬ КИСЛОРОДА
Аннотация: In the present work, composite materials of the type (1–x)SrTi0.5Fe0.5O3–δ–xCe0.8(Sm0.8Sr0.2)0.2O2–δ (with х = 0, 0.25, 0.5, 0.75 and 1) are obtained by the two step solid state technique. Their transport properties are investigated in terms of their usage as mixed ionic-electronic conducting (MIEC) membrane materials for hydrogen production. It is found that, in reducing conditions the composites are characterized by mixed conductivity, which level is controlled by the electrical properties of the prevailing phase. Moreover, at 900 °C and pO2 = 10−18 atm, total conductivity, ambipolar conductivity and oxygen permeability of composites dramatically grow (each of about 500%), when the fluorite component content x increases from 0 to 1. High-conducting and strengthened material 0.5SrTi0.5Fe0.5O3–δ–0.5Ce0.8(Sm0.8Sr0.2)0.2O2–δ is chosen for making tube shaped membranes using the tape rolling method, which are successfully applied for hydrogen production in laboratory scale. The hydrogen flux reached 0.176 ml cm−2 min−1 for x = 1, T = 900 °C and emf = 10 mV.

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18.

Инвентарный номер: нет.

   H 99


    Hydrogen production aided solid oxide electrochemical reformer fed with octane: A theoretical analysis [Текст] / A. A. Murashkina, V. I. Maragou, A. K. Demin, E. Yu. Pikalova, P. E. Tsiakaras // Journal of Power Sources. - 2008. - Vol. 181, № 2. - С. 304-312 : рис. - Библиогр.: p. 312 ( 11 ref.) . - ISSN 0378-7753

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
SOLID OXIDE ELECTROCHEMICAL REFORMERS -- STEAM REFORMING -- PARTIAL OXIDATION

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19.

Инвентарный номер: нет.

   I-70


    Investigation of the structural and electrical properties of Co-doped BaCe0.9Gd0.1O3 - дельта [] / D. Medvedev, V. Maragou, T. Zhuravleva, A. Demin, E. Gorbova, P. Tsiakaras // Solid State Ionics. - 2011. - Vol. 182, № 1. - С. 41-46. - Bibliogr. : p. 45-46 (43 ref.) . - ISSN 0167-2738

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ОКСИД КОБАЛЬТА -- ЦЕРАТ БАРИЯ -- ПРОТОННЫЕ ПРОВОДНИКИ -- ДОПИРОВАНИЕ
Аннотация: In the present work the effect of cobalt oxide addition on the density and on the electrical properties of gadolinium-doped barium cerate is investigated. A series of BaCe0.9 б xGd0.1CoxO3 б б (x = 0.00, 0.01, 0.03, 0.05, 0.07, 0.10) samples were prepared according to the conventional solid state reaction synthesis technique. The experimental results indicated that the addition of cobalt oxide leads to the improvement of the sintering properties and the enhancement of the grain dimensions. It was found that the investigated complex oxides crystallize at cubic singony. Moreover, according to the X-ray diffraction (XRD) and the scanning electron microscopy (SEM) analyses, the prepared samples are single-phase in the range of 0.00 x б 0.10, while at compositions of x б 0.03 there is almost no open porosity. According to the four-probe dc electrical conductivity measurements, the conductivity of the BaCe0.9 б xGd0.1CoxO3 б б samples is inferior to the undoped ones (BaCe0.9Gd0.1O3 б б—BCG) in wet air atmosphere. However, the presence of Co in the range of 0.03 б x б 0.10 at higher temperatures (800–900 °C) has smaller impact on the electrical conductivity values. Finally, in wet hydrogen atmosphere the electrical conductivity values of the 1 mol% Co-doped sample were found to be close enough to the ones of the undoped sample, leading to the conclusion that cobalt can be effectively employed as a sintering additive of gadolinium-doped barium cerates.

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20.

Инвентарный номер: нет.

   O-97


    Oxidative desulfurization of diesel fraction with hydrogen peroxide in the presence of catalysts based on transition metals / E. V. Rakhmanov, A. V. Tarakanova, T. Valieva, V. V. Litvinova, A. L. Maksimov, A. A. Anisimov, S. V. Vakarin, O. L. Semerikova, Yu. P. Zaikov // Petroleum Chemistry. - 2014. - Vol. 54, № 1. - С. 48-50

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ВОЛЬФРАМАТ МОЛИБДАТА -- БЕНЗОТИОФЕН
Аннотация: The oxidative desulfurization of a straight-run, nonhydrotreated diesel fraction (boiling range 178–342°C) containing benzothiophene, dibenzothiophene, their alkyl-substituted derivatives, and thioxanthene by the action of hydrogen peroxide in the presence of transition metal compounds (Na2MoO4, Na2WO4, NaVO3, WO3, tungstic acid, and heteropoly tungstate/molybdate H3PMo6W6O40) in a biphasic system followed by the extraction of the oxidation products with dimethylformamide has been studied. The oxidation of the hydrocarbon fraction in the presence of heteropoly tungstate/molybdate under biphasic conditions provides for the removal of up to 82% of total sulfur.

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1-20 21-39

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