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Articles 1 - 5 of 5
Full-Text Articles in Engineering
Computational Studies Of H2, O2, And Co Adsorption On Pt And Pt-Ru Catalyst Clusters For Hydrogen Fuel Cell Applications, Huy Mai, T.J. Dhilip Kumar, P. Tarakeshwar, Naduvalath Balakrishnan
Computational Studies Of H2, O2, And Co Adsorption On Pt And Pt-Ru Catalyst Clusters For Hydrogen Fuel Cell Applications, Huy Mai, T.J. Dhilip Kumar, P. Tarakeshwar, Naduvalath Balakrishnan
Undergraduate Research Opportunities Program (UROP)
Previous computational studies of hydrogen fuel cell catalysis primarily focus on single adsorbate and therefore do not reflect the realistic situation. Here we investigated the effect of multiple hydrogen, oxygen, and carbon monoxide adsorption on bimetallic nanoclusters as allowed by computational resources. The criteria of which we studied were adsorption energies, electron densities, electrostatic charges, and HOMO-LUMO energy gaps with respect to each structure. We found that Pt-Ru clusters have better performance than pure Pt clusters early in the adsorption course, and pure Pt clusters are more consistent than Pt-Ru clusters in a sequence of adsorbate introduction.
Structural Studies Of Crsi2 At High Pressures And Temperatures, Weldu Gabrimicael, Ravhi S. Kumar, Andrew Cornelius
Structural Studies Of Crsi2 At High Pressures And Temperatures, Weldu Gabrimicael, Ravhi S. Kumar, Andrew Cornelius
Undergraduate Research Opportunities Program (UROP)
It is of extreme importance to develop new potential energy sources to reduce dependence on fossil fuels. As a result of this, the study of thermoelectric materials, capable of changing heat into electrical energy, has become a field of great interest regarding fundamental properties. To help better understand these materials, facilities for the measurement of relevant properties at high pressure have been developed, but lack the ability to characterize the materials at high temperature and pressure. Therefore, this project has the goal of developing a heater arrangement to be used in conjunction with the high pressure capabilities already developed to …
Raman Studies Of 1,3,5,7 Cyclooctatetraene At High Pressure, Martin Galley, Ed Romano, Sergey Tkachev, Michael Pravica
Raman Studies Of 1,3,5,7 Cyclooctatetraene At High Pressure, Martin Galley, Ed Romano, Sergey Tkachev, Michael Pravica
Undergraduate Research Opportunities Program (UROP)
We performed Raman spectroscopic studies of 1,3,5,7-cyclooctatetraene at elevated pressures up to 10 GPa with the aim of examining possible planarization of the molecule and further studying two prior-discovered phases of the solid with pressure. The Raman excitation source was a Krypton-ion laser operating at 674.1 nm (give wavelength).
1,3,5,7 Cyclooctatetraene has an octagonal formation however it is not aromatic or anti-aromatic (not a subject to the 4n+2 Huckel’s rule) [1]. As a result, its adopts a somewhat reactive tub shape. Upon the addition or removal of one to two electrons under ambient conditions, the molecule planarizes and becomes aromatic …
Spatially Resolved Optical Absorption Spectrometry And Single Crystal Diffraction On Metamict Materials, Alison Savage, Oliver Tschauner, Sergey Tkachev
Spatially Resolved Optical Absorption Spectrometry And Single Crystal Diffraction On Metamict Materials, Alison Savage, Oliver Tschauner, Sergey Tkachev
Undergraduate Research Opportunities Program (UROP)
A major goal in developing storage medium for radioactive waste is the identification of chemically suitable and durable material for storage in repositories (Lumpkin 2006). Radiation damage induces enhanced chemical diffusion and structural breakdown of the host materials, which can lead to contamination of the surrounding environment. During this project four different naturally occurring materials which are common carriers of thorium and uranium were examined : gadolinite, perrierite, allanite, and pyrochlore of which the first three are silicates and pyrochlore being an oxide. Their spectra and absorptions bands were examined to identify prominent features due to radiation damage. The goal …
Nuclear Energy, Steve Kraft
Nuclear Energy, Steve Kraft
Native American Forum on Nuclear Issues
Abstract:
-Why Nuclear Energy?
-The lesson of the last 20 years in U.S. electricity policy:
– Diversified fuel and technology portfolio is essential
– All fuels and technologies (nuclear, coal, natural gas, renewables, efficiency) have a legitimate role
-The challenge for the future:
– Preserving/restoring diversified portfolio
– Ensuring resource adequacy, particularly in competitive markets
-Expanded use of nuclear energy is part of the answer
– Integrated used fuel management supports nuclear competitiveness