Gotowe bibliografie tematyczne / La2Ce2O7

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Gotowa bibliografia na temat „La2Ce2O7”

Autor: Grafiati

Data publikacji: 2 czerwca 2025

Data aktualizacji: 31 lipca 2025

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Artykuły w czasopismach na temat "La2Ce2O7"

Chao, Jiameng, Hui Lin, Dechao Yu, et al. "Optical Temperature-Sensing Performance of La2Ce2O7:Ho3+ Yb3+ Powders." Materials 17, no. 7 (2024): 1692. http://dx.doi.org/10.3390/ma17071692.

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In this paper, La2Ce2O7 powders co-activated by Ho3+ and Yb3+ were synthesized by a high temperature solid-state reaction. Both Ho3+ and Yb3+ substitute the La3+ sites in the La2Ce2O7 lattice, where the Ho3+ concentration is 0.5 at.% and the Yb3+ concentration varies in the range of 10~18% at.%. Pumped by a 980 nm laser, the up-conversion (UC) green emission peak at 547 nm and the red emission at 661 nm were detected. When the doping concentration of Ho3+ and Yb3+ are 0.5 at.% and 14% at.%, respectively, the UC emission reaches the strongest intensity. The temperature-sensing performance of La

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Zhou, Zeling, Chao Li, Junfeng Zhang, et al. "Dry Reforming of Methane over Pyrochlore-Type La2Ce2O7-Supported Ni Catalyst: Effect of Particle Size of Support." Molecules 29, no. 8 (2024): 1871. http://dx.doi.org/10.3390/molecules29081871.

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The properties of supports (such as oxygen vacancies, oxygen species properties, etc.) significantly impact the anti-carbon ability due to their promotional effect on the activation of CO2 in dry reforming of methane (DRM). Herein, pyrochlore-type La2Ce2O7 compounds prepared using co-precipitation (CP), glycine nitrate combustion (GNC) and sol–gel (S-G) methods, which have highly thermal stability and unique oxygen mobility, are applied as supports to prepare Ni-based catalysts for DRM. The effect of the calcining temperature (500, 600 and 700 °C) on La2Ce2O7(CP) has also been investigated. Ba

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Fung, Kuan-Zong, and Shu-Yi Tsai. "Evaluation of La2Ce2O7 (LCO) Protection Layer for Proton Conducting Electrolyte." ECS Meeting Abstracts MA2022-02, no. 47 (2022): 1787. http://dx.doi.org/10.1149/ma2022-02471787mtgabs.

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Due to the susceptible reaction BaCeO3-based proton-conductors toward steam and carbon dioxide, La2Ce2O7(LCO) is proposed as a protect layer on top of solid electrolyte since LCO has shown high proton conductivity with adequate stability against steam. In the study, La(NO3)3·6H₂O and Ce(NO3)3·6H₂O were used as precursors to obtain La2Ce2O7(LCO). Particle size analyzer and XRD are applied to analysis this result. From the XRD analysis, it can be seen at the temperature range above 900°C, the reflections representing fluorite-structured LCO appeared with other reflections from BaCe0.5Zr0.3Y0.2O3

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Wang, Xue Ying, Yong Ping Zhu, and Wei Gang Zhang. "Preparation of La₂Ce₂O₇ Nano-Powders by Molten Salts Method." Advanced Materials Research 79-82 (August 2009): 337–40. http://dx.doi.org/10.4028/www.scientific.net/amr.79-82.337.

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La2Ce2O7 nano-powders with cubic fluorite structure have been firstly prepared by Molten Salts method. These nano-powders were prepared at relatively low temperatures(800°C and 900 °C) at different time, using La(NO3)3•6H2O and La(NO3)3•6H2O as raw materials, as well as K2SO4 (anhydrous) and Na2SO4 (anhydrous) as molten salts and dispersant. XRD, SEM were used to characterize the composition, morphology and size of prepared products. The procedure is facile and suitable for the synthesis of the La2Ce2O7 nano-particles and it will be an excellent method for preparation of other pyrochlore type

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Vieri, Hizkia Manuel, Arash Badakhsh, and Sun Hee Choi. "Comparative Study of Ba, Cs, K, and Li as Promoters for Ru/La2Ce2O7-Based Catalyst for Ammonia Synthesis." International Journal of Energy Research 2023 (May 13, 2023): 1–11. http://dx.doi.org/10.1155/2023/2072245.

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Ammonia is one of the promising carriers for hydrogen and a critical ingredient in many industries including fertilizers and pharmaceuticals. In the KAAP process, ruthenium- (Ru-) based catalysts showed 10-20 more activity compared with iron- (Fe-) based catalysts. The modifications that are applied to Ru-based catalysts revolve around changing the material of its support and/or promoters. This study compares the performance of a Ru-based catalyst for ammonia synthesis supported by La2Ce2O7 using barium (Ba), cesium (Cs), potassium (K), and lithium (Li) as promoters. Based on structural, physi

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Lashmi, P. G., N. Balaji, S. Senthil Kumar, and S. T. Aruna. "Hot corrosion properties of plasma sprayed La2Ce2O7/YSZ vis-à-vis La2Ce2O7/cluster paired zirconia thermal barrier coatings." Surface and Coatings Technology 409 (March 2021): 126902. http://dx.doi.org/10.1016/j.surfcoat.2021.126902.

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Yoon, So-Young, Sung-Min Lee, Kwang-Bo Shim, and Hyung-Tae Kim. "High Temperature Thermal Conductivities in La2Ce2O7−Gd2Ce2O7−Y2Ce2O7Pyrochlore System for Thermal Barrier Coatings." Journal of the Korean Ceramic Society 44, no. 7 (2007): 387–92. http://dx.doi.org/10.4191/kcers.2007.44.7.387.

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Zhang, F. X., C. L. Tracy, M. Lang, and R. C. Ewing. "Stability of fluorite-type La2Ce2O7 under extreme conditions." Journal of Alloys and Compounds 674 (July 2016): 168–73. http://dx.doi.org/10.1016/j.jallcom.2016.03.002.

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Xu, Ya-Xin, Tao Liu, Guan-Jun Yang, and Chang-Jiu Li. "Thermal stability of plasma-sprayed La2Ce2O7/YSZ composite coating." Ceramics International 42, no. 7 (2016): 7950–61. http://dx.doi.org/10.1016/j.ceramint.2016.01.179.

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Khademinia, Shahin, and Mahdi Behzad. "Lanthanum cerate (La2Ce2O7): hydrothermal synthesis, characterization and optical properties." International Nano Letters 5, no. 2 (2015): 101–7. http://dx.doi.org/10.1007/s40089-015-0143-x.

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Rozprawy doktorskie na temat "La2Ce2O7"

Huang, Hshuan-Lin, and 黃炫霖. "Study of V-Doped La2Ce2O7 as the Anode Material and 2-steps Sintering Method for LSGM Electrolyte Material for Intermediate Temperature Solid Oxide Fuel Cells." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/rvwgvk.

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碩士<br>國立交通大學<br>應用化學系碩博士班<br>102<br>In this thesis, series of La2(Ce1-yVy)2O7- were prepared by sol-gel method to study the influence of metal cation to their physical and electrochemical properties, for La0.8Sr0.2Ga0.8Mg0.2O3 (LSGM) was successfully synthesized by 2-step sol-gel method. For La2(Ce1-yVy)2O7- series, pure phase were observed in a range of 0 ≤ y ≤ 0.2 and their compositions were analyzed by ICP-AES/SEM-EDS. The refined cell constants decreased as V contents increased. From the TPR result, these materials started to react with hydrogen in the temperature range of 400-750 ºC and

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Streszczenia konferencji na temat "La2Ce2O7"

Wang, Li-Shuang, Tao Liu, Guang-Rong Li, Guan-Jun Yang, Chang-Jiu Li, and Cheng-Xin Li. "Influence of Elemental Evaporation on the Composition of La2Ce2O7 Splats Deposited by Plasma Spraying." In ITSC2015, edited by A. Agarwal, G. Bolelli, A. Concustell, et al. ASM International, 2015. http://dx.doi.org/10.31399/asm.cp.itsc2015p0818.

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Abstract La2Ce2O7 (LCO) is one of the promising candidates of high temperature thermal barrier coating materials. However, during plasma spraying, the evaporation of both CeO2 and La2O3 in high temperature plasma jet leads to deviation of coating composition from the starting powder particle. Such change results in significant inhomogeneity of compositions within a coating which influences the performance of resultant coating. In this study, an agglomerated La2Ce2O7 powder with Ce / La ratio of 1.5 and in a size range of 5-60 μm was used to deposit the splats and coatings under different plasm

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Mahida, H. R., Deobrat Singh, Sanjeev K. Gupta, Yogesh Sonvane, and P. B. Thakor. "Electronic and transport properties of fluorite structure of La2Ce2O7." In DAE SOLID STATE PHYSICS SYMPOSIUM 2016. Author(s), 2017. http://dx.doi.org/10.1063/1.4980591.

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OLIVEIRA, J. S. de, A. B. VITAL, A. L. LOPES-MORIYAMA, and C. P. de SOUZA. "SÍNTESE DE La2Ce2O7 PELO MÉTODO DE COPRECIPITAÇÃO VIA MEIO OXALATO." In Congresso Brasileiro de Engenharia Química em Iniciação Científica. Editora Blucher, 2017. http://dx.doi.org/10.5151/chemeng-cobeqic2017-412.

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Xu, Ya-Xin, Tao Liu, and Chang-Jiu Li. "Examination of the Thermal Stability of Plasma-Sprayed La2Ce2O7/YSZ Composite Coating." In ITSC2015, edited by A. Agarwal, G. Bolelli, A. Concustell, et al. ASM International, 2015. http://dx.doi.org/10.31399/asm.cp.itsc2015p0806.

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Abstract LCO (La2Ce2O7), a solid solution of La2O3 in CeO2, is a promising top coating in TBCs. However, it is generally necessary to use LCO as a top coat on YSZ coating to construct a multilayer TBC due to poor mechanical properties of LCO. Therefore, the thermal and chemical stability of LCO/YSZ at high temperature environment become important issue. In this paper, the 50LCO-50YSZ composite coating was deposited using blend powders of YSZ and LCO. The LCO powders used have a nominal particle size range from 10 to 44μm. The LCO/YSZ deposits were exposed at 1300 ¢XC for different durations. T

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Kang, Y. X., Y. Bai, C. G. Bao, W. Fan, and L. Zhang. "Mechanical Properties and CMAS Corrosion Resistance of La2Ce2O7/YSZ Composite Thermal Barrier Coatings." In ITSC2018, edited by F. Azarmi, K. Balani, H. Li, et al. ASM International, 2018. http://dx.doi.org/10.31399/asm.cp.itsc2018p0075.

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Abstract 50 vol. % La2Ce2O7 (LC)/yttria partially stabilized zirconia (YSZ) composite thermal barrier coating (TBC) was deposited by supersonic atmospheric plasma spraying (SAPS). The mixture of LC and YSZ can effectively eliminate the sudden decrease of thermal expansions coefficients of LC. The results of CMAS corrosion tests indicated that the LC/YSZ composite coating reveals high resistance to the penetration of CMAS with reprecipitation of La-Ce apatite, CaAl2Si2O8, MgAl2O4 and t-ZrO2. Furthermore, compared to YSZ coating, the LC/YSZ composite coating can obviously improve the thermal cyc

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Wang, Li-Shuang, Guang-Rong Li, Cheng-Xin Li, Tao Liu, Guan-Jun Yang, and Chang-Jiu Li. "Composition Effects of La2Ce2O7 Thermal Barrier Coatings against Calcium-Magnesium-Aluminum-Silicate (CMAS) at 1250°C." In ITSC2015, edited by A. Agarwal, G. Bolelli, A. Concustell, et al. ASM International, 2015. http://dx.doi.org/10.31399/asm.cp.itsc2015p0789.

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Abstract The evaporation of both CeO2 and La2O3 in high temperature plasma arc leads to deviation of plasma sprayed La2Ce2O7 coating composition from the starting powder particle. Such change results in significantly inhomogeneity of compositions within a coating which influences the performance of calciummagnesium- alumina-silicate (CMAS) corrosion. In this study, the pellets with different Ce / La ratio were interacted with molten CMAS glass. The penetration of molten CMAS on different pellets was characterized by scanning electron microscopy and energy dispersive spectrum (EDS) and the phas

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Xiang, J. Y., S. H. Chen, J. H. Huang, et al. "Preparation and Thermophysical Properties of La2(Zr0.7Ce0.3)2O7 Ceramic Material." In ITSC2011, edited by B. R. Marple, A. Agarwal, M. M. Hyland, et al. DVS Media GmbH, 2011. http://dx.doi.org/10.31399/asm.cp.itsc2011p0944.

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Abstract La2(Zr0.7Ce0.3)2O7(LZ7C3) ceramic was prepared by solid state reaction method at 1400 °C for 12h using La2O3, ZrO2, and CeO2 as starting reactants. The phase composition and microstructures were studied by XRD and SEM technology. The thermal conductivity and linear thermal expansion coefficient were investigated by laser-flash method and pushing-rod method respectively. XRD results revealed that LZ7C3 is a mixture of pyrochlore and fluorite, and the pyrochlore is the main phase which is a small solid solution of La2Ce2O7 (LC) in La2Zr2O7 (LZ). The thermal conductivity of LZ7C3 decreas

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Sheng-Feng Weng and Chi-Shen Lee. "Hydrogen production from oxidative steam reforming of ethanol on pyrochlore-type metal oxide, La2Ce2−xNi0.5xO7−1.5x (x=0.1–0.9)." In 2012 International Conference on Renewable Energy Research and Applications (ICRERA). IEEE, 2012. http://dx.doi.org/10.1109/icrera.2012.6477427.

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