Ibrahim, M. and A. Jalil, A. and Khusnun, N. F. and A. Fatah, N. A. and Hamid, M. Y. S. and Gambo, Y. and Abdulrasheed, A. A. and Hassan, N. S. (2020) Enhanced n-hexane hydroisomerization over bicontinuous lamellar silica mordenite supported platinum (Pt/HM@KCC-1) catalyst. International Journal of Hydrogen Energy, 45 (36). pp. 18587-18599. ISSN 0360-3199
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Official URL: http://dx.doi.org/10.1016/j.ijhydene.2019.04.067
Abstract
A bicontinuous lamellar silica mordenite (HM@KCC-1) has been successfully synthesized by microemulsion technique assisted with mordenite-seed recrystallization, followed by protonation and impregnation with platinum (Pt). The catalysts were extensively characterized by XRD, N2 adsorption, FTIR, FESEM, TEM and ESR and the activity was tested in hydroisomerization of n-hexane. Fourier Transform-Infrared Spectroscopy (FT-IR) study through pyridine and 2,6- dimethylpyridine adsorption revealed that Pt/HM@KCC-1 possessed abundant Lewis acid sites and moderate Brønsted acid sites while Pt/HM possessed strong Lewis and Brønsted acid sites. At 300 °C, the conversion of n-hexane on Pt//HM@KCC-1 reached 75% with 98% isomer selectivity and 74% isomer yield. The enhancement of catalytic performance is attributed to the well-dispersed Pt nanoparticles, tuned acidic properties and improved textural properties which provided a well balance in the acid/metal functions. Thus, favours the reaction towards higher hydroisomerization selectivity, limiting the undesired consecutive cracking reaction.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | acidity, bicontinuous lamellar silica, hydroisomerization, mordenite, n-hexane |
| Subjects: | T Technology > TP Chemical technology |
| Divisions: | Chemical and Energy Engineering |
| ID Code: | 91781 |
| Deposited By: | Yanti Mohd Shah |
| Deposited On: | 28 Jul 2021 08:42 |
| Last Modified: | 28 Jul 2021 08:42 |
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