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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Crystal growth of Sr[subscript 2]Ir[subscript x]Ru[subscript 1-x]O[subscript 4] for x; 0.4
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Coupling CO[subscript 2] reduction with ethane aromatization for enhancing catalytic stability of ir
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Probing the thermal decomposition of plutonium (III) oxalate with IR and Raman spectroscopy, X-ray diffraction, and electron microscopy
The thermal decomposition of Pu(III) oxalate was analyzed by Raman microspectroscopy, infrared spectroscopy, scanning electron microscopy, and powder X-ray diffraction. These data show that crystalline Pu 2 (C 2 O 4 ) 3 •9H 2 O progressively loses water and oxalate ligands as it is heated, which leads to a decrease in long-range lattice ordering, though minimal changes are observed in gross crystalline morphology. The onset of PuO 2 formation was observed between 200 - 250 °C. Thermal decomposition of oxalate ligands leads to the formation of CO 2 and plutonium oxalate-carbonate moieties, which had not been observed in previously published thermogravimetric measurements of Pu(III) oxalate. Formation of plutonium oxalate-carbonate moieties is believed to be associated with a change in the plutonium oxidation state from 3+ to 4+, which occurs prior to PuO 2 formation. The data provided herein demonstrate the rich spectroscopic nature of a rather underexplored, and technologically relevant, plutonium system. Ideally these results will further future investigations into the Pu(III) oxalate system both experimentally and computationally.
Facet-controlled Pt–Ir nanocrystals with substantially enhanced activity and durability towards oxygen reduction
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Chemical Design of IrS[subscript 2] Polymorphs to Understand the Charge/Discharge Asymmetry in Anion
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Stable and Efficient Ir Nanoshells for Oxygen Reduction and Evolution Reactions
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Highly Active and Stable Isolated Ir δ+ Sites in Iridium Phosphide for Propane Dehydrogenation
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Impact of Drying on Meso- and Nanoscale Structures of Citrus Fiber: A Study by SFG, ATR-IR, XRD, and DLS
Citrus fibers are a sidestream of the pectin extraction process from citrus peel. This sidestream can be converted into a functional ingredient through a shear-induced homogenization process. One technical challenge with this material is that dehydration and subsequent rehydration result in reduction of viscosity compared to the original product. In this study, various drying methods were compared with never-dried fibers to investigate the structural changes underlying the viscosity loss. Infrared and X-ray diffraction analyses confirmed no changes in chemical composition and crystalline structure of citrus fibers. Here, the dynamic light scattering and sum frequency generation analyses of citrus fiber suspension showed that the rehydration process could not fully disperse aggregated fibers, which appears to be the main cause for the viscosity loss.
Ir(III)-Based Agents for Monitoring the Cytochrome P450 3A4 Active Site Occupancy
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Characterization of a Dynamic Y 2 Ir 2 O 7 Catalyst during the Oxygen Evolution Reaction in Acid
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Oxidation and Reduction of Ir(100) Studied by High-Energy Surface X-ray Diffraction
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