Collaborative Research: Direct-in-liquid electrical discharge for the production of hydrogen-rich gas

1336385/1336173 Mededovich/Kovaleski从碳氢化合物中制造氢气是各种应用所需要的，特别是对于燃料电池驱动的车辆和废气的等离子体处理。 虽然气态烃的等离子体辅助重整提供了优于常规重整技术的若干优点，但是直接在液态烃中产生等离子体可能潜在地导致具有与气态烃中形成的等离子体不同的产物选择性的更小尺寸和更高产量的反应容器。 本计画研究液态碳氢化合物与醇类之直接液相电浆辅助重整过程中所发生之基本化学过程。 实验工作使用自由基清除技术，等离子体光谱，以及氘代和同位素标记的溶剂，以阐明负责形成氢，短链烃和合成气的液体燃料直接重整过程中有和没有水或空气的化学途径。 理论上的努力集中在乙醇和异辛烷中放电的动力学模型的发展，目的是比较理论（即预测）和实验副产物。 这项工作还扩展到使用快速光学成像，纹影和阴影成像，干涉测量的放电的特性。该项目及其相关活动直接吸引本科生和研究生，并扩大到当地小学生，教育公众。

1336385/1336173Mededovich/KovaleskiManufacturing of hydrogen from hydrocarbons is needed for a variety of applications, especially for fuel cell powered vehicles and plasma treatment of exhaust gas. Though plasma-assisted reforming of gaseous hydrocarbons provides several advantages over conventional reforming technologies, creating plasmas directly in liquid hydrocarbons can potentially lead to smaller size and higher throughput reaction vessels with product selectivity different from the plasma formed in gaseous hydrocarbons. This project investigates the fundamental chemical processes occurring during direct-in-liquid plasma-assisted reforming of liquid hydrocarbons and alcohols. The experimental work uses radical scavenging techniques, plasma spectroscopy, as well as deuterated and isotopically labeled solvents to elucidate chemical pathways responsible for the formation of hydrogen, short-chained hydrocarbons, and syngas during direct reforming of liquid fuels with and without water or air. The theoretical effort focuses on the development of kinetic models for electrical discharges in ethanol and in iso-octane with the purpose of comparing theoretical (i.e. predicted) and experimental byproducts. The work also extends to the characterization of the discharge using fast optical imaging, schlieren and shadowgraphic imaging, and interferometry. The project and its related activities directly engage undergraduate and graduate students, extend to local elementary school students, and educate the general public.