Download or read book High Temperature Thermodynamic Studies on the Transuranium Oxides and Their Solid Solutions written by Petronela Gotcu-Freis and published by IOS Press. This book was released on 2011 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: A growing demand for energy supply worldwide, coupled with the necessity to reduce emission of greenhouse gases, has led to a renewed interest in nuclear energy as an alternative to fossil fuels for electricity production in the last years. One of the ma
Download or read book The Thermodynamic Properties and Equilibria at High Temperatures of Uranium Halides Oxides Nitrides and Carbides written by and published by . This book was released on 1945 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography on the High Temperature Chemistry and Physics of Materials written by and published by . This book was released on 1969 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NBS Special Publication written by and published by . This book was released on 1968 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research and Development in Progress written by and published by . This book was released on 1973 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Complex Oxides An Introduction written by Buttrey Douglas J and published by World Scientific. This book was released on 2019-03-20 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a unique look at the chemistry and properties of complex metal oxides from the perspectives of some of the most active researchers on this class of materials. Applications of complex oxide materials are highly varied. Topics reviewed in this volume include solid-state battery research, the chemistry of transparent conductors, ternary uranium oxides, magnetic perovskites, non-linear optical materials, complex molybdenum-vanadium bronzes and other complex materials used in selective oxidation catalysis. It is written to serve as an introduction to the subject for and those beginning to work on these materials, particularly new graduate students.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1992 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bulletin of Chemical Thermodynamics written by and published by . This book was released on 1989 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Summaries of the USAEC Basic Research Program in Chemistry written by and published by . This book was released on 1968 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book TID written by and published by . This book was released on 1968 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ceramic Abstracts written by and published by . This book was released on 1999 with total page 950 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Computational and Experimental Study of the Thermodynamics of Uranium cerium Mixed Oxides written by Benjamin Edward Hanken and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The thermophysical properties of mixed oxide (MOX) fuels, and how they are influenced by the incorporation of fission products and other actinides, must be well understood for their safe use in an advanced fuel cycle. Cerium is a common plutonium surrogate in experimental studies of MOX, as it closely matches plutonium's ionic radii in the 3+ and 4+ oxidation states, and is soluble in fluorite-structured UO2. As a fission product, cerium's effects on properties of MOX are also of practical interest. To provide additional insights on structure-dependent behavior, urania solid solutions can be studied via density functional theory (DFT), although approaches beyond standard DFT are needed to properly account for the localized nature of the f-electrons. In this work, DFT with Hubbard-U corrections (DFT+U) was employed to study the energetics of fluorite-structured U[subscript 1-y]Ce[subscript y]O2 mixtures. The employed computational approach makes use of a procedure which facilitates convergence of the calculations to multiple self-consistent DFT+U solutions for a given cation arrangement, corresponding to different charge states for the U and Ce ions in several prototypical cation arrangements. Results indicate a significant dependence of the structural and energetic properties of U[subscript 1-y]Ce[subscript y]O2 on the nature of both charge and cation ordering. With the effective Hubbard-U parameters that reproduce well the measured oxidation-reduction energies for urania and ceria, it was found that charge transfer between U4 and Ce4 ions, leading to the formation of U5+ and Ce3+, gives rise to an increase in the mixing energy in the range of 4-14 kJ/mol of the formula unit, depending on the nature of the cation ordering. In conjunction with the computational approach, high-temperature oxide-melt drop-soltuion calorimetry experiments were performed on eight samples spanning compositions of y = 0.119 to y = 0.815. Room temperature mixing enthalpies of U[subscript 1-y]Ce[subscript y]O2 determined from these experiments show near ideal behavior, in line with the expectations of the computational results. Combination of these theoretical and experimental results yields insight into the plausible degrees of charge transfer within U[subscript 1-y]Ce[subscript y]O2 ; the comparison suggests that although charge transfer between uranium and cerium ions is disfavored energetically, it is likely to be entropically stabilized at the high temperatures relevant to the processing and service of urania-based solid solutions.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1968 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration and published by . This book was released on 1977 with total page 900 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ERDA Energy Research Abstracts written by United States. Energy Research and Development Administration. Technical Information Center and published by . This book was released on 1976 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Summaries of FY Research in the Chemical Sciences written by and published by . This book was released on 1989 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
