June 14, 2015
June 14, 2015
June 17, 2015
Energy Conversion and Conservation
26.869.1 - 26.869.19
Hydrogen Generation for Future Energy ApplicationsThe purpose of this research is to develop a method to produce and store hydrogen gas as analternate energy source. Hydrogen gas has the potential to be used as an inexpensive, clean andsafe replacement to the standard lithium hydroxide batteries and fossil fuels which are currentlyused for the majority of society’s energy needs. This paper discusses in detail how sodiumborohydride (NaBH4) reacts with acetic acid (CH3COOH) and polyvinyl acetate (PVAc) toproduce hydrogen gas. This paper addresses the experimental steps taken in order to determinethe byproducts of the two reactions, such as: CO2 determination, thermal imaging data,temperature data and the effect of injection rates on the production of hydrogen gas.By utilizing theoretical and experimental data, one can determine the byproducts of thesereactions, which can then be used to calculate the thermodynamics and kinetics behind thechemical equations. In our experiments, the quantities of sodium borohydride and acetic acidwere varied in order to determine if the amount of gas produced was linear with time. Ourexperimental setup was constantly refined until it mirrored previous experiments performed innumerous scientific journals. The steps taken to achieve these goals are discussed. Thetemperature of each reaction was monitored and recorded, as well as the amount of gas producedand the quantity of the reactants used. The reaction byproducts were studied under a microscopeand the crystalline structure was documented in microscope screen captures at variousmagnifications. The thermodynamics behind the reactions were calculated to include: heats offormation for each reactant and product as well as the Gibbs free energy of the reaction. Thesecalculations helped confirm the previous predictions and show whether the reaction isexothermic or endothermic. We measured the effect of varying the injection rate of the acid andthe added “storage component, PVAc on the reaction and how different concentrations of aceticacid impact the amount of hydrogen gas produced and stored in the residual polymer. The pHchange of the reaction, the pH drive, and the effect of different color laser irradiationwavelengths on the PVAc reaction were also evaluated. Some discussion on polyvinyl alcohol(PVA) is included.These experiments are easily reproduced in the university laboratories and provide an excellentbase for discussions on energy, hydrogen, and energy storage potential.
Masi, J. V., & Martinez, D. M., & Wilson, J. A., & Male, B. R. (2015, June), Hydrogen Generation for Future Energy Applications Paper presented at 2015 ASEE Annual Conference & Exposition, Seattle, Washington. 10.18260/p.24206
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