G. L., Lew and N., Ibrahim and S., Abdullah and W. R., Wan Daud and W. K. W., Ramli (2021) Exsolution enhancement of metal-support co oxidation perovskite catalyst with parameter modification. In: IOP Conference Series: Earth and Environmental Science, 1st International Conference on Biomass Utilization and Sustainable Energy 2020 , 15-16 December 2020 , Virtual Conference, Universiti Malaysia Perlis (UniMAP). pp. 1-8., 765 (012078). ISSN 1755-1307
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Abstract
This study aimed to further tune the capability of active metal exsolution onto the surface of the CO oxidative perovskite catalyst La0.7Ce0.1Co0.3Ni0.1Ti0.6O3 by tuning the reducing parameter. Under same calcination temperature of 800℃, XRD analysis shown that the precursors with calcination duration of 6 hours (S2T8H6) was able to achieve similar crystalline structure to those with calcination duration of 12 hours (S2T8H12). In order for the active metal (CoNi) to be exsolved onto the perovskite surface, reducing parameter such as temperature and duration are deemed crucial to the reduction process. The exsolution of the active metals was observed when the samples were treated under reducing condition with varying temperatures of 550℃ and 700℃ and duration from 200 to 300 minutes. Through comparison with their EDX readings, S2T8H6 treated under 700℃ and 300 minutes (S2T8H6-R7H5) achieved the highest weight percentage of surface Cobalt and Nickel of 3.83 and 2.81. It was clear that by tuning the temperature and duration of reduction, the exsolution of the active metals onto the surface of the perovskite could be improved resulting in better exposure and dispersion of active metals onto the surface of catalyst.
| Item Type: | Conference or Workshop Item (Lecture) |
|---|---|
| Additional Information: | Indexed by Scopus |
| Uncontrolled Keywords: | Calcination temperature; Cobalt and nickels; Crystalline structure; Parameter modification; Perovskite catalysts; Reducing conditions; Varying temperature; Weight percentages |
| Subjects: | Q Science > QD Chemistry T Technology > T Technology (General) T Technology > TA Engineering (General). Civil engineering (General) T Technology > TP Chemical technology |
| Faculty/Division: | Faculty of Chemical & Natural Resources Engineering College of Engineering Faculty of Chemical and Process Engineering Technology |
| Depositing User: | Mr Muhamad Firdaus Janih@Jaini |
| Date Deposited: | 28 Oct 2022 04:20 |
| Last Modified: | 28 Oct 2022 04:20 |
| URI: | http://umpir.ump.edu.my/id/eprint/35397 |
| Download Statistic: | View Download Statistics |
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