Ceramic hollow fibre catalytic converters for automotive emissions control

Mahyon, Nur Izwanne

Ceramic hollow fibre catalytic converters for automotive emissions control

dc.contributor.author	Mahyon, Nur Izwanne
dc.date.accessioned	2023-10-30T00:41:16Z
dc.date.available	2023-10-30T00:41:16Z
dc.date.issued	2019
dc.description	Thesis (PhD.)
dc.description.abstract	The development of ceramic hollow fibre catalytic converters for the control of automotive emission has been presented in this thesis. Attempts have been made to understand the different factors such as the fabrication of the substrate, the effects of the washcoat packing, the variations of the catalytic reactions at different catalyst formulations, and the evaluation of the pressure drop in the new substrate structure, since these factors may cause a real hindrance in the development of a new ceramic hollow fibre catalytic converter. An asymmetric ceramic hollow fibre substrate was fabricated through the extrusion process, assisted by a phase-inversion. The produced substrate resulted in a hollow fibre with an array of microchannels with almost double the hydraulic diameter of the commercial 400 cells per inch square (CPSI) honeycomb monolith, which lead to less pressure drop in the system. The hollow fibre substrate can offer a tremendous increase in the geometric surface area (GSA), which is beneficial for catalyst layer deposition. With the new structure, a new washcoating technique has been proposed. A loosely packed washcoat in the microchannel has been identified as the best configuration. After the successful conversion of CO at a low light-off temperature and low precious metal loading, two perovskite catalysts have been synthesised, and their catalytic activity in the hollow fibre catalytic converter has been assessed. This result indeed highlights the advantage of the new proposed structure for catalytic converters in order to control tailpipe emissions.
dc.description.sponsorship	Faculty of Engineering - School of Chemical & Energy Engineering
dc.identifier.uri	http://openscience.utm.my/handle/123456789/817
dc.language.iso	en
dc.publisher	Universiti Teknologi Malaysia
dc.subject	Automobiles—Catalytic converters
dc.subject	Automobiles—Catalytic converters—Design and construction
dc.subject	Automobiles—Pollution control devices
dc.title	Ceramic hollow fibre catalytic converters for automotive emissions control
dc.type	Thesis
dc.type	Dataset