Effect of Precursors on Trimetallic Ruthenium-Based Catalysts Supported on γ-Al 2 O 3 Pellets for Low-Temperature Ammonia Decomposition
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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CH↗
SEARCH · Engineering Papers
Results for “Al”
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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Reply to Comment by Mandel et al. on “Numerically Bounded Linguistic Probability Schemes Are Unlikely to Communicate Uncertainty Effectively”
Abstract We thank the Comment's authors for their considered critique of our paper. We respond to their main criticisms and hope that this discussion motivates further consideration of communication strategies for event attribution analyses.
97 MATHEMATICS AND COMPUTING↗
Phase Transitions of Fe-, Al- and Ca-Bearing Orthopyroxenes at High Pressure and High Temperature: I
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Xu, Jingui↗
Elasticity of Hydrated Al-Bearing Stishovite and Post-Stishovite: Implications for Understanding Reg
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Zhang, Yanyao↗
Thermal Equations of State of Corundum and Rh[subscript 2]O[subscript 3] (II)-Type Al[subscript 2]O[
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Shi, Weigang↗
Machine learning and high-throughput computational guided development of high temperature oxidation-resisting Ni-Co-Cr-Al-Fe based high-entropy alloys
Not Available
Tan, Xingru (ORCID:0000000347504145)↗
Relatives of cyanomethylene: replacement of the divalent carbon by B − , N + , Al − , Si, P + , Ga − , Ge, and As +
The lowest lying singlet and triplet states of nine relatives of cyanomethylene are studied with highly rigorous ab initio methods, and periodic trends in their electronic structures are analyzed.
Abbott, Boyi Z.↗
Revisiting the charge compensation mechanisms in LiNi[subscript 0.8]Co[subscript 0.2;#8722;y]Al[subscript y]O[subscript 2] systems
Abstract not provided
Lebens-Higgins, Zachary W.↗
Synthesis of SrTiO 3 and Al-doped SrTiO 3 via the deep eutectic solvent route
SrTiO 3 and aluminum-doped SrTiO 3 are synthesized by calcination of metal salts dissolved in a deep eutectic solvent (DES) without any post-synthesis treatment.
36 MATERIALS SCIENCE↗
On route to one-pot synthesis of delaminated Al-SSZ-70 zeolite via partial substitution of OSDA with CTAOH surfactant
Direct synthesis of delaminated layered zeolitic materials aims to synthesize confined catalysts for reactions involving sterically bulky reactants, which are too large to benefit from conventional three-dimensional confinement in micropores.
Chemistry↗
A computationally-guided non-equilibrium synthesis approach to materials discovery in the SrO–Al 2 O 3 –SiO 2 phase field
Glass-crystallisation synthesis is harnessed to probe structure prediction in a search for new inorganic compounds, yielding a new ribbon silicate Sr 2 Si 3 O 8 .
Chemistry↗
Kinetic and process modeling of Guerbet coupling chemistry over Cu–Mg–Al mixed oxides
Kinetic modeling of Guerbet coupling chemistry over a CuMgAlO x catalyst is presented. Integration of the model in a process simulation enables assessing a recycling strategy to optimize the production of diesel fuel precursors.
Chavarrio, Javier E. [Department of Chemical and B↗
Proposed design and optimization of a higher harmonic cavity for ALS-U
Higher harmonic cavities (HHCs), also known as Landau cavities, have been proposed to increase the beam lifetime and Landau damping by lengthening the bunch and increasing the synchrotron tune spread. Here, we present an optimized 1.5 GHz normal conducting HHC design for the Advanced Light Source Upgrade project at Lawrence Berkeley National Lab with a superconducting-like geometry for lower R/Q. The optimization goal is to reach the required shunt impedance while maintaining a relatively high Q value of the cavities. A multi-objective genetic algorithm (MOGA)-based optimization process is applied to optimize the radio frequency (RF) design. This study serves as an example of how a genetic algorithm can be used to optimize RF cavities. Detailed exploration and characterization of the MOGA-based RF cavity optimization have been demonstrated from the aspects of minimizing the coupled bunch instabilities and analyzing the higher-order modes and the corresponding impedance of the HHC.
Feng, H. (ORCID:0000000319392692)↗
The role of iron in magnetic damping of Mg(Al,Fe) 2 O 4 spinel ferrite thin films
© 2020 Author(s). We have investigated magnesium aluminum ferrite thin films with a range of iron concentrations and identified the optimal iron content to obtain high crystalline quality thin films with the low magnetic damping required for spin current-based applications. Epitaxial MgAl 2-x FexO4 films with 0.8 < x < 2.0 were grown by pulsed laser deposition on single crystal MgAl2O4 substrates and were characterized structurally and magnetically. We find that the x = 1.5 composition minimizes the room-temperature magnetic damping with a typical Gilbert damping parameter of α eff = 1.8 × 10-3. This minimized damping is governed by a competition between the more robust magnetic ordering with increased iron content, x, and the more defective structure due to larger film-substrate lattice mismatch with increased iron content. The temperature-dependent magnetization curves indicate that Tc is suppressed below room temperature for iron content x ≤ 1.2 and eventually suppressed entirely for x = 0.8. X-ray magnetic circular dichroism results indicate that for all x the magnetic moment is dominated by Fe 3 + cations distributed in a 60:40 ratio on the octahedral and tetrahedral sites, with minimal contribution from Fe 2 + cations. Films with x = 1.4-1.6 exhibit very strong ferromagnetic resonance and low Gilbert damping with α eff = (1.8-6) × 10-3, making them ideal candidates for microwave and spintronic applications.
36 MATERIALS SCIENCE↗