Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 5 of 5
Full-Text Articles in Engineering
Synthesizing And Modeling The Optical Properties Of Silica Aerogel, Hannah Margavio
Synthesizing And Modeling The Optical Properties Of Silica Aerogel, Hannah Margavio
Honors Theses
Silica aerogel has attracted the attention of researchers for decades for its applications in insulation materials, storage, and solar-thermal devices. The appeal surrounding silica aerogel is attributed to its unique combination of physical and chemical properties. Silica aerogel is a highly porous, optically transparent nano-polymer with a low thermal conductivity. Additionally, the material boasts a super-low density, high specific surface area, and low dielectric constant. The following report proposes a viable method of synthesizing polyvinylpolymethylsilane (PVPMS) aerogel as well as a model for determining the optical performance of TMOS aerogel by determining its radiative properties. First, the report will explore …
Using Greet To Analyze Natural Gas Usage In Municipal Fleets, Bradley E. Gibson
Using Greet To Analyze Natural Gas Usage In Municipal Fleets, Bradley E. Gibson
Honors Theses
GREET was used to calculate energy consumption and pollutants emitted from specific fuel/vehicle types when given a specific set of parameters. In this case, the parameters were the type of fuel mix from TVA, the selected vehicle year of 2015, the vehicle weight specified in the heavy-duty vehicle range, and type of simulation technique, which was the Hammersely Sequence Sampling. These inputs, along with seventeen fuel/vehicles mixes, specific pollutants, and cost considerations, were used to investigate the environmental impact of the transition from petrol diesel to natural gas in the municipal fleets of Chattanooga, Tennessee. The energy consumption included coal, …
The Effect Of Co-Solvent And Ordered Lattice Structure On Catalysis Of Biodiesel Production In Microreactors, Benjamin J. D. Kegley
The Effect Of Co-Solvent And Ordered Lattice Structure On Catalysis Of Biodiesel Production In Microreactors, Benjamin J. D. Kegley
Honors Theses
In this study, stable single phase feedstocks for biodiesel production were successfully determined. The addition of free fatty acids, which are considered waste, to the soy bean oil and methanol processing feed as a co-solvent, produces a stable single phase. The single phase feedstock significantly increases initial global rates and supplements the oil with further biodiesel production. A stable single phase feedstock and increased reaction rates are desirable due to the use of continuous heterogeneous biodiesel production in microreactors currently being developed by this research group. Further design improvements to the microreactor design have been determined. Such improvements include the …
Reduction Of Ketoximes To Amines By Catalytic Transfer Hydrogenation Using Raney Nickel And 2-Propanol As Hydrogen Donor, Katherynne E. Taylor
Reduction Of Ketoximes To Amines By Catalytic Transfer Hydrogenation Using Raney Nickel And 2-Propanol As Hydrogen Donor, Katherynne E. Taylor
Honors Theses
Ketoximes successfully underwent hydrogenolysis and hydrogenation under catalytic transfer conditions with Raney Nickel and 2-propanol as a hydrogen donor. Ketoximes were reduced to primary amines when 2% KOH was included in the reaction. In the absence of KOH N-isopropyl-secondary-amines were obtained in good yields.
Catalyst Studies With Implications On The Design And Fabrication Of Microreactors, Eric Snider
Catalyst Studies With Implications On The Design And Fabrication Of Microreactors, Eric Snider
Honors Theses
Biodiesel, or fatty acid methyl ester (FAME), 'is a potential alternative, renewable fuel source to lessen foreign fuel dependency. Dr. Frank Jones' microreactor research group is investigating the use of microreactors to produce biodiesel. Microreactors can increase reaction rates, heat transfer, and lessen production costs due to their small size. The first generation of microreactors, coated with a nickel oxide (NiO) catalyst, has been developed and needs to be tested to determine their performance. Also, a catalyst study comparing NiO and platinum oxide (PtO2) will be performed to find the better catalyst for FAME production.