Characterization of high-temperature hierarchical porous mullite washcoat synthesized using aluminum dross and coal fly ash
Mixture of aluminum dross (AD) and coal fly ash (CFA) was used to produce high-temperature porous mullite for washcoat application. CFA is the combustion by-product of pulverized coal in a coal-fired power plant, while AD is a waste product produced in secondary aluminum refining. In this study, 80...
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| Format: | Article |
| Language: | English |
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MDPI
2020
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| Online Access: | http://psasir.upm.edu.my/id/eprint/38129/ http://psasir.upm.edu.my/id/eprint/38129/1/38129.pdf |
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| author | Choo, Thye Foo Mohd Salleh, Mohamad Amran Kok, Kuan Ying Matori, Khamirul Amin Abdul Rashid, Suraya |
| author_facet | Choo, Thye Foo Mohd Salleh, Mohamad Amran Kok, Kuan Ying Matori, Khamirul Amin Abdul Rashid, Suraya |
| author_sort | Choo, Thye Foo |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Mixture of aluminum dross (AD) and coal fly ash (CFA) was used to produce high-temperature porous mullite for washcoat application. CFA is the combustion by-product of pulverized coal in a coal-fired power plant, while AD is a waste product produced in secondary aluminum refining. In this study, 80 wt% of AD and 20 wt% of CFA was used to prepare a mullite precursor (MP) via acid leaching and dry-milling. The precursor was coated on a substrate and subsequently fired at 1500 °C. The results showed that the precursor transformed to a hierarchical porous microstructure assembled by large interlocked acicular mullite crystals. The pore structures consisted of large interconnected open pores and small pores. The specific surface area of the mullite washcoat was 4.85 m2g−1 after heating at 1500 °C for 4 h. The specific surface area was compatible with the specific surface area of other high-temperature washcoats. |
| first_indexed | 2025-11-15T09:40:08Z |
| format | Article |
| id | upm-38129 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T09:40:08Z |
| publishDate | 2020 |
| publisher | MDPI |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-381292020-05-03T22:54:08Z http://psasir.upm.edu.my/id/eprint/38129/ Characterization of high-temperature hierarchical porous mullite washcoat synthesized using aluminum dross and coal fly ash Choo, Thye Foo Mohd Salleh, Mohamad Amran Kok, Kuan Ying Matori, Khamirul Amin Abdul Rashid, Suraya Mixture of aluminum dross (AD) and coal fly ash (CFA) was used to produce high-temperature porous mullite for washcoat application. CFA is the combustion by-product of pulverized coal in a coal-fired power plant, while AD is a waste product produced in secondary aluminum refining. In this study, 80 wt% of AD and 20 wt% of CFA was used to prepare a mullite precursor (MP) via acid leaching and dry-milling. The precursor was coated on a substrate and subsequently fired at 1500 °C. The results showed that the precursor transformed to a hierarchical porous microstructure assembled by large interlocked acicular mullite crystals. The pore structures consisted of large interconnected open pores and small pores. The specific surface area of the mullite washcoat was 4.85 m2g−1 after heating at 1500 °C for 4 h. The specific surface area was compatible with the specific surface area of other high-temperature washcoats. MDPI 2020 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/38129/1/38129.pdf Choo, Thye Foo and Mohd Salleh, Mohamad Amran and Kok, Kuan Ying and Matori, Khamirul Amin and Abdul Rashid, Suraya (2020) Characterization of high-temperature hierarchical porous mullite washcoat synthesized using aluminum dross and coal fly ash. Crystals, 10 (3). art. no. 178. pp. 1-11. ISSN 2073-4352 https://www.mdpi.com/2073-4352/10/3/178 10.3390/cryst10030178 |
| spellingShingle | Choo, Thye Foo Mohd Salleh, Mohamad Amran Kok, Kuan Ying Matori, Khamirul Amin Abdul Rashid, Suraya Characterization of high-temperature hierarchical porous mullite washcoat synthesized using aluminum dross and coal fly ash |
| title | Characterization of high-temperature hierarchical porous mullite washcoat synthesized using aluminum dross and coal fly ash |
| title_full | Characterization of high-temperature hierarchical porous mullite washcoat synthesized using aluminum dross and coal fly ash |
| title_fullStr | Characterization of high-temperature hierarchical porous mullite washcoat synthesized using aluminum dross and coal fly ash |
| title_full_unstemmed | Characterization of high-temperature hierarchical porous mullite washcoat synthesized using aluminum dross and coal fly ash |
| title_short | Characterization of high-temperature hierarchical porous mullite washcoat synthesized using aluminum dross and coal fly ash |
| title_sort | characterization of high-temperature hierarchical porous mullite washcoat synthesized using aluminum dross and coal fly ash |
| url | http://psasir.upm.edu.my/id/eprint/38129/ http://psasir.upm.edu.my/id/eprint/38129/ http://psasir.upm.edu.my/id/eprint/38129/ http://psasir.upm.edu.my/id/eprint/38129/1/38129.pdf |