Fabrication And Characterization Of Porous Alumina

Porous alumina have been widely used in engineering applications. In this study, porous alumina has been fabricated using polymeric sponge and slip casting methods. In polymeric sponge method (using polyurethane sponge (PU)), type of binders (polyvinyl alcohol (PVA), wheat starch (WS) and tapioca...

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Main Author: Darong, Chhor
Format: Thesis
Language:English
Published: 2013
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Online Access:http://eprints.usm.my/43363/1/Chhor%20Darong24.pdf
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spelling my-usm-ep.433632019-04-12T05:26:18Z Fabrication And Characterization Of Porous Alumina 2013 Darong, Chhor TN1-997 Mining engineering. Metallurgy Porous alumina have been widely used in engineering applications. In this study, porous alumina has been fabricated using polymeric sponge and slip casting methods. In polymeric sponge method (using polyurethane sponge (PU)), type of binders (polyvinyl alcohol (PVA), wheat starch (WS) and tapioca starch (TS)), solid loadings (50, 60, and 70 wt. %), sintering temperatures (1200, 1300, 1400 and 1500 oC) and slurry recoating technique were studied. In slip casting method, polyvinyl alcohol (PVA) has been used as a binder and pore former, and the effect of solid loadings (50, 60, 70 and 75 wt. %) and sintering temperatures (1200, 1300, 1400 and 1500 oC) were studied. Results showed that porous alumina produced by slip casting method consisted of closed pores, pore size in ther range of 78 to 300 μm and higher compressive strength (1.22- 42.79 MPa). Whereas, porous alumina produced by polymeric sponge consisted of interconnected pores, pore size in the range of 800 μm to 1.5 mm and higher percentage of porosity (77.66 to 95 %). However, using recoating technique, it showed the compressive strength of the samples was improved. In conclusion, porous alumina produced by polymeric sponge method in this study has a potential to be used as hot gas filtration, whereas; porous alumina produced by slip casting method has a potential use as a catalysis. 2013 Thesis http://eprints.usm.my/43363/ http://eprints.usm.my/43363/1/Chhor%20Darong24.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Bahan & Sumber Mineral
institution Universiti Sains Malaysia
collection USM Institutional Repository
language English
topic TN1-997 Mining engineering
Metallurgy
spellingShingle TN1-997 Mining engineering
Metallurgy
Darong, Chhor
Fabrication And Characterization Of Porous Alumina
description Porous alumina have been widely used in engineering applications. In this study, porous alumina has been fabricated using polymeric sponge and slip casting methods. In polymeric sponge method (using polyurethane sponge (PU)), type of binders (polyvinyl alcohol (PVA), wheat starch (WS) and tapioca starch (TS)), solid loadings (50, 60, and 70 wt. %), sintering temperatures (1200, 1300, 1400 and 1500 oC) and slurry recoating technique were studied. In slip casting method, polyvinyl alcohol (PVA) has been used as a binder and pore former, and the effect of solid loadings (50, 60, 70 and 75 wt. %) and sintering temperatures (1200, 1300, 1400 and 1500 oC) were studied. Results showed that porous alumina produced by slip casting method consisted of closed pores, pore size in ther range of 78 to 300 μm and higher compressive strength (1.22- 42.79 MPa). Whereas, porous alumina produced by polymeric sponge consisted of interconnected pores, pore size in the range of 800 μm to 1.5 mm and higher percentage of porosity (77.66 to 95 %). However, using recoating technique, it showed the compressive strength of the samples was improved. In conclusion, porous alumina produced by polymeric sponge method in this study has a potential to be used as hot gas filtration, whereas; porous alumina produced by slip casting method has a potential use as a catalysis.
format Thesis
qualification_level Master's degree
author Darong, Chhor
author_facet Darong, Chhor
author_sort Darong, Chhor
title Fabrication And Characterization Of Porous Alumina
title_short Fabrication And Characterization Of Porous Alumina
title_full Fabrication And Characterization Of Porous Alumina
title_fullStr Fabrication And Characterization Of Porous Alumina
title_full_unstemmed Fabrication And Characterization Of Porous Alumina
title_sort fabrication and characterization of porous alumina
granting_institution Universiti Sains Malaysia
granting_department Pusat Pengajian Kejuruteraan Bahan & Sumber Mineral
publishDate 2013
url http://eprints.usm.my/43363/1/Chhor%20Darong24.pdf
_version_ 1747821200249192448