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Artículos de revistas sobre el tema "KNO3/Al2O3"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 14 de febrero de 2022

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1

Milinskii, A. Yu, and S. V. Baryshnikov. "Phase transitions in KNO3/Al2O3 ferroelectric nanocomposites." Izvestiya vysshikh uchebnykh zavedenii. Fizika, no. 2 (February 1, 2021): 69–75. http://dx.doi.org/10.17223/00213411/64/2/69.

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2

Атаев, М. Б., М. М. Гафуров, Р. М. Эмиров, К. Ш. Рабаданов та А. М. Амиров. "Исследование фазового состава и структуры нанокомпозитов (1-x)KNO-=SUB=-3-=/SUB=-+xAl-=SUB=-2-=/SUB=-O-=SUB=-3-=/SUB=- методом рентгеновской дифракции". Физика твердого тела 58, № 12 (2016): 2336. http://dx.doi.org/10.21883/ftt.2016.12.43850.191.

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Методом рентгеновской дифракции исследованы фазовый состав и структурные свойства нитрата калия KNO3 и его гетерогенных композитов с наноразмерным порошком оксида алюминия Al2O3 при различных концентрациях нанопорошка Al2O3. Установлено, что в композитах (1+x)KNO3+xAl2O3 образуется дополнительная, высокотемпературная, ромбоэдрическая фаза нитрата калия (фаза III) с параметрами решетки a=5.4644 Angstrem, c=9.0842 Angstrem. Обнаружено, что с увеличением концентрации нанопорошка Al2O3 содержание основной фазы нитрата калия (фаза II) значительно уменьшается, при этом растет относительная доля фазы
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3

Milinskiy, Alexey Y., and Sergey V. Baryshnikov. "Phase Transitions in Nanocomposites Obtained by Introducing KNO3 into the Pores of Nanosized Al2O3 Films." Nanoscience &Nanotechnology-Asia 9, no. 1 (2018): 128–32. http://dx.doi.org/10.2174/2210681208666180403112631.

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Introduction: Comparative studies of phase transitions in nanocomposites on the base of KNO3 and Al2O3 films with pores of 240 and 45 nm were carried out. Experiment: The temperature dependences of the linear dielectric constant and the amplitude of the third harmonic were measured. The measurements were carried out in the heating and cooling regime in the range from room temperature to 463 K. Anomalies, corresponding to structural phase transitions, were observed. Results & Conclusion: A considerable expansion of the temperature range of the potassium nitrate ferroelectric phase III was o
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4

Alekseeva, O. A., A. A. Naberezhnov, and E. V. Stukova. "NEUTRON DIFFRACTION STUDIES OF STRUCTURE TEMPERATURE EVOLUTION OF NANOCOMPOSITE «KNO3 + POROUS ALUMINA»." Messenger AmSU, no. 89 (2020): 40–45. http://dx.doi.org/10.22250/jasu.89.10.

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5

Amirov, A. M., M. M. Gafurov, and K. Sh Rabadanov. "Study of the KNO3–Al2O3 system by differential scanning calorimetry." Physics of the Solid State 58, no. 9 (2016): 1930–32. http://dx.doi.org/10.1134/s1063783416090067.

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6

Rabadanov, K. Sh, M. M. Gafurov, Z. Yu Kubataev, et al. "Ion Conductivity and Vibrational Spectra of LiNO3–KNO3 + Al2O3 Composites." Russian Journal of Electrochemistry 55, no. 6 (2019): 573–78. http://dx.doi.org/10.1134/s1023193519060168.

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7

ГАФУРОВ, М. М., К. Ш. РАБАДАНОВ, З. Ю. КУБАТАЕВ та ін. "КОЛЕБАТЕЛЬНАЯ И ОРИЕНТАЦИОННАЯ РЕЛАКСАЦИЯ НИТРАТ-ИОНА В СИСТЕМЕ LINO3-KNO3 + AL2O3". РАСПЛАВЫ, № 5 (2019): 434–43. http://dx.doi.org/10.1134/s0235010619050050.

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8

Reddy, V. Madhusudhana, N. Kundana, and T. Sreekanth. "Investigation of XRD and Transport Properties of (PEO+KNO3+Nano Al2O3) Composite Polymer Electrolyte." Material Science Research India 15, no. 1 (2018): 23–27. http://dx.doi.org/10.13005/msri/150103.

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(PEO+KNO3+Nano Al2O3) based Composite Polymer Electrolytes (CPE) has been prepared by using solution casting technique. In this technique, Poly (ethylene oxide) (PEO) and KNO3salt were dissolved separately in methanol and they were mixed together. Nano alumina (Al2O3) (particle size ~10nm) was doped to mixed solution and stirred for 24hrs. X-ray diffraction (XRD) technique has been obtained to determine complexation of salt and polymer in composite polymer electrolytes. Ionic and electronic transference numbers of these composite polymer electrolytes has been calculated by using Wagner’s polar
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9

Xiao, Xin, Gan Zhang, Yulong Ding, and Dongsheng Wen. "Rheological Characteristics of Molten Salt Seeded with Al2O3 Nanopowder and Graphene for Concentrated Solar Power." Energies 12, no. 3 (2019): 467. http://dx.doi.org/10.3390/en12030467.

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HITEC salt (NaNO2-NaO3-KNO3) and solar salt (NaO3-KNO3) are typical molten salts used in concentrated solar power. Adding nanoparticles is an effective method to improve the thermo-physical properties of pure salt. It is indispensable to experimentally study the rheological behaviours of salt seeded with nanoparticles, which can increase the specific heat capacity of pure salt. In this work, the viscosities of HITEC salt were measured with different shear rates in the temperature range of 200 °C to 450 °C firstly, while those of solar salt were measured in the temperature range of 250 °C to 50
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10

Vyas, Amish P., N. Subrahmanyam, and Payal A. Patel. "Production of biodiesel through transesterification of Jatropha oil using KNO3/Al2O3 solid catalyst." Fuel 88, no. 4 (2009): 625–28. http://dx.doi.org/10.1016/j.fuel.2008.10.033.

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11

Raja Jeyaseelan, T., N. Azhagesan, and Vignesh Pethurajan. "Thermal characterization of NaNO3/KNO3 with different concentrations of Al2O3 and TiO2 nanoparticles." Journal of Thermal Analysis and Calorimetry 136, no. 1 (2019): 235–42. http://dx.doi.org/10.1007/s10973-018-7980-6.

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12

Аmirov, A. M., M. M. Gafurov, and S. I. Suleymanov. "Study of the influence of nanosized oxides MgO, Al2O3 and SiO2 on phase transitions in LiNO3–KNO3 using the DSC method." Herald of Dagestan State University 34, no. 2 (2019): 105–10. http://dx.doi.org/10.21779/2542-0321-2019-34-2-105-110.

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13

Song, Menglu, Xiangui Yang та Gongying Wang. "Preparation of polycarbonate diols (PCDLs) from dimethyl carbonate (DMC) and diols catalyzed by KNO3/γ-Al2O3". RSC Advances 8, № 61 (2018): 35014–22. http://dx.doi.org/10.1039/c8ra07141a.

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γ-Al<sub>2</sub>O<sub>3</sub> loaded with potassium nitrate (KNO<sub>3</sub>/Al<sub>2</sub>O<sub>3</sub>) catalysts were prepared, characterized and employed as a type of heterogenous solid base catalyst in the synthesis of polycarbonate (1,4-butane carbonate)-diol (PBC–OH) via the transesterification of dimethyl carbonate (DMC) and 1,4-butanediol (BD).
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14

da Silva, Júlio César Teixeira, Amanda Duarte Gondim, Luzia Patrícia Fernandes Carvalho Galvão, João Paulo da Costa Evangelista, Antonio S. Araujo, and Valter José Fernandes. "Thermal stability evaluation of biodiesel derived from sunflower oil obtained through heterogeneous catalysis (KNO3/Al2O3) by thermogravimetry." Journal of Thermal Analysis and Calorimetry 119, no. 1 (2014): 715–20. http://dx.doi.org/10.1007/s10973-014-4145-0.

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15

Kim, Sun Woog, Hyeon-Tae Im, Jung Eun Lee, Hong Seok Kim, Jin Ho Kim, and Jonghee Hwang. "Physical properties of chemically strengthened thin glass prepared by the spray method using an original KNO3–Al2O3 slurry." Materials Chemistry and Physics 259 (February 2021): 123942. http://dx.doi.org/10.1016/j.matchemphys.2020.123942.

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16

Kim, Geun Hee, Jae Hwan Pee, Jin Ho Kim, Woo Seok Cho, Hyung Tae Kim, and Kyung Ja Kim. "Strength Improvement of Porous Ceramics by the Surface Infiltration of Strengthening Materials." Key Engineering Materials 608 (April 2014): 26–30. http://dx.doi.org/10.4028/www.scientific.net/kem.608.26.

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One method of improving the strength of porous ceramics is to add Al2O3 in ceramic raw materials and then they must be sintered at high temperature for densification. However, the non-plastic property of Al2O3 leads to a decline in plasticity of clay body, thus severely interfering with forming process. Besides porous ceramics have fine cracks and pores distributed within porous ceramics, these fine cracks on the surface also result in weakening of the sintered body. In this study, we attempted to improve the strength while compensating for the weakness of porous ceramics by the surface infilt
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17

Alekseeva, O. A., A. A. Naberezhnov, E. V. Stukova, A. Franz, and S. V. Baryshnikov. "Temperature range broadening of the ferroelectric phase in KNO3 nanoparticles embedded in the pores of the nanoporous Al2O3 matrix." Ferroelectrics 574, no. 1 (2021): 8–15. http://dx.doi.org/10.1080/00150193.2021.1888043.

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18

Singh, N. B., and A. K. Ojha. "Coprecipitation of mixture of CuO and Al2O3 through NaNO3-KNO3 eutectic mixture and its catalytic activity during the decomposition of Hydroxy terminated poly-butadiene (HTPB)." Progress in Crystal Growth and Characterization of Materials 45, no. 1-2 (2002): 1–7. http://dx.doi.org/10.1016/s0960-8974(02)00020-7.

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19

Kim, Do Heui, Kumudu Mudiyanselage, János Szanyi, Jonathan C. Hanson, and Charles H. F. Peden. "Effect of H2O on the Morphological Changes of KNO3 Formed on K2O/Al2O3 NOx Storage Materials: Fourier Transform Infrared and Time-Resolved X-ray Diffraction Studies." Journal of Physical Chemistry C 118, no. 8 (2014): 4189–97. http://dx.doi.org/10.1021/jp410816r.

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20

Milinskiy, A. Yu, and S. V. Baryshnikov. "Phase Transitions in Ferroelectric KNO3/Al2O3 Nanocomposites." Russian Physics Journal, June 2, 2021. http://dx.doi.org/10.1007/s11182-021-02325-2.

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21

Daw, C. Stuart, Katey E. Lenox, Kalyana Chakravarthy, William E. Epling, and Greg Campbell. "Phenomenology of NOx Adsorber Catalysts." International Journal of Chemical Reactor Engineering 1, no. 1 (2003). http://dx.doi.org/10.2202/1542-6580.1087.

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Lean phase operation of lean NOx adsorbers or lean NOx traps (LNTs) is analyzed using data from highly controlled isothermal bench-flow experiments on Pt/K/Al2O3 catalysts. Simulated diesel exhaust was used for inflow in the experiments. Pt promotes the oxidation of NO, the primary component of engine-out NOx, to NO2 which is more easily adsorbed and stored as KNO3. While the presence of Pt was found to be essential for capturing the NOx from the exhaust, it was seen that the NOx storage efficiency did not increase indefinitely with increasing Pt loading. Pt loading at a given temperature of o
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