Novel catalyst for the removal of aromatic sulfur species from refinery streams.

Zinc oxide nanowires;Reactive adsorption;Sulfur removal;Zeta-potential;Sintering of catalyst;Organic sulfur species

Franz Georg Petzold, 1979-

University:University of Louisville

Department:Chemical Engineering

关键词: Zinc oxide nanowires;    Reactive adsorption;    Sulfur removal;    Zeta-potential;    Sintering of catalyst;    Organic sulfur species;   

Others  :  https://ir.library.louisville.edu/cgi/viewcontent.cgi?article=2121&context=etd

美国|英语

来源: The Universite of Louisville's Institutional Repository

【 摘 要 】

A novel catalyst with hydro-desulfurization and hydrogenation capabilities was tested with the aim of producing ultra-low sulfur and aromatics diesel oil. The catalytically active phase is nickel in a reduced valence state on a carrier made of zinc oxide nanowires and alumina. Based on the reactive adsorption principle, it was speculated that enhanced metal-support interactions and short diffusion paths between nickel and zinc oxide could lead to improved activity and sulfur uptake capacity. Zinc oxide nanowires, proposed here as a novel catalyst support, were produced in appreciable quantities in a microwave-induced plasma jet reactor. After purification and decoration with an active nickel phase, the nanowires underwent extensive characterization, which revealed promising properties. On-stream hydrogenation activity and sulfur uptake was tested on a model diesel oil spiked with difficult-to-remove organic sulfur species. It was observed that the proposed catalyst system, as it was assembled in this project, is inferior to existing hydro-desulfurization products. Nevertheless, this undertaking was a first crude attempt and the concept of reactive adsorption was sufficiently demonstrated, which can hopefully be improved upon with succeeding trials.