480787 Low Pressure Flame Synthesis of TiO2 Polymorphs

Monday, November 14, 2016
Grand Ballroom B (Hilton San Francisco Union Square)
Jonathan Shi, Rutgers University, Mount Laurel, NJ

The global chemical industry is a multi-billion dollar industry and is an integral part of every society’s lifestyle whether it be in fuels, chemicals, nanotechnology, or mundane home commodities. However, many industrial production methods give more focus to yield and purity instead of environmental considerations. For example, TiO2 is a valuable and extremely versatile material that is used globally for catalysis, pigmentation, and nanotechnology. It is currently industrially produced via two major methods: the sulfate and chloride processes. These two methods have high yield from common ores, but have two main limitations: these processes can only produce the Rutile and Anatase phases and often have toxic or large amounts of waste. My project focuses on a novel, greener method of producing various polymorphs of TiO2 via low pressure stagnant flame synthesis. This method is capable of producing many phases and morphologies of TiO2, consistent and reliable sample, and less harmful products. The apparatus is also scalable for industrial purposes. We will also build an understanding of phase dependence on temperature and generate a phase diagram from our experimental findings. This diagram, detailing phase and microstructure, will contribute significantly to the fields of materials sciences and catalysis engineering given the wide variety of applications that TiO2 has. Low pressure stagnant flame synthesis presents a greener alternative to major industrial chemical processes with fewer limitations on product phase and morphology.

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