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Pt-promoted HY@KCC-1 as a highly selective catalyst for hydroisomerization of n-dodecane with enhanced mass transfer limitation.

Y., Gambo and A. A., Jalil and S., Triwahyono and S. M., Izan and A. A., Abdulrasheed and Mastura, Ibrahim and Herma Dina, Setiabudi (2018) Pt-promoted HY@KCC-1 as a highly selective catalyst for hydroisomerization of n-dodecane with enhanced mass transfer limitation. In: 4th International Conference Of Chemical Engineering And Industrial Biotechnology (ICCEIB 2018), 1-2 Aug 2018 , Seri Pacific Hotel, Kuala Lumpur. pp. 239-241..

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Abstract

A unique core-shell fibrous silica zeolite HY (HY@KCC-1) catalyst with high surface area of 568 m2/g was successfully synthesized via a facile silica solvothermal procedure coupled with zeolite crystalseed crystallization, and subsequently investigated for n-dodecane hydroisomerization. Field Emission Scanning Microscope (FESEM) combined with X-ray Diffraction (XRD) revealed the fibrous silica growth. Probing of the Brønsted (BAS) and Lewis (LAS) acid sites with 2,6-dimethylpyridine (2,6-DMP) via Fourier Transform Infrared Spectroscopy (FT-IR) revealed that Pt/HY@KCC-1 had abundant strong acid sites with improved accessibility relative to unmodified Pt/HY catalyst. The Pt/HY@KCC-1 has displayed complete n-dodecane conversion coupled with an incredibly enhanced isomer yield of 72 % at 350 oC, nearly two-fold higher than unmodified Pt/HY catalyst. Additionally, the unique morphology and increased mesopores on Pt/HY@KCC-1 led to the superb catalytic activity via enhanced acid site accessibility by bulky n-dodecane reactant molecules and easy desorption of product isomers prior to being cracked. Remarkably, Pt/HY@KCC-1 had an internal effectiveness factor (η) of unity, thus suggesting its potential application in hydroisomerization of higher hydrocarbons for enhancing fuel properties

Item Type: Conference or Workshop Item (Other)
Uncontrolled Keywords: Hydroisomerization; n-dodecane; hydrocracking; mesopores; fibrous silica zeolite.
Subjects: T Technology > TP Chemical technology
Faculty/Division: Faculty of Chemical & Natural Resources Engineering
Depositing User: Pn. Hazlinda Abd Rahman
Date Deposited: 17 Jan 2019 08:40
Last Modified: 17 Jan 2019 08:40
URI: http://umpir.ump.edu.my/id/eprint/23849
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