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Full-Text Articles in Engineering
Determining Detailed Reaction Kinetics For Nitrogen-And Oxygen-Containing Fuels, Nicole Jeanne Labbe
Determining Detailed Reaction Kinetics For Nitrogen-And Oxygen-Containing Fuels, Nicole Jeanne Labbe
Open Access Dissertations
With the emergence of new biorenewable transportation fuels, the role of heteroatoms in combustion has increased tremendously. While petroleum-based fuels are primarily hydrocarbons, many biorenewable fuels contain heteroatoms such as oxygen and nitrogen, introducing new challenges associated with toxic emissions. A fundamental understanding of the chemical kinetics of combustion of these heteroatomic fuels is necessary to elucidate the pathways by which these toxic emissions are formed and may be achieved through the development of combustion models. Reaction sets, the core of these combustion models, may be assembled for individual fuels through a balance of employing vetted rate constants from prior …
Modeling Material Transformations In Biorefinement, Vishal Agarwal
Modeling Material Transformations In Biorefinement, Vishal Agarwal
Open Access Dissertations
Lignocellulosic biomass is a significant pool of energy resource, which can be harnessed to supplement or replace the dwindling fossil fuel reserves. This requires development of economically viable means to efficiently convert biomass to biofuels. A major requirement in biofuel industry is to develop highly active, selective and stable catalysts. Zeolites are an important class of micro-porous crystalline solids, and have proven to be effective and stable acid catalysts for a variety of petrochemical and fine-chemical processes. Nitrided zeolites -- i.e., those with Si-O-Si and Si-OH-Al groups substituted by Si-NH-Si and Si-NH2-Al -- have shown promise as shape-selective …
Pyrolysis Oils: Characterization, Stability Analysis, And Catalytic Upgrading To Fuels And Chemicals, Tushar Vispute
Pyrolysis Oils: Characterization, Stability Analysis, And Catalytic Upgrading To Fuels And Chemicals, Tushar Vispute
Open Access Dissertations
There is a growing need to develop the processes to produce renewable fuels and chemicals due to the economical, political, and environmental concerns associated with the fossil fuels. One of the most promising methods for a small scale conversion of biomass into liquid fuels is fast pyrolysis. The liquid product obtained from the fast pyrolysis of biomass is called pyrolysis oil or bio-oil. It is a complex mixture of more than 300 compounds resulting from the depolymerization of biomass building blocks, cellulose; hemi-cellulose; and lignin. Bio-oils have low heating value, high moisture content, are acidic, contain solid char particles, are …