Enhanced n-hexane hydroisomerization over bicontinuous lamellar silica mordenite supported platinum (Pt/HM@KCC-1) catalyst

M. Ibrahim; A. A. Jalil; N. F. Khusnun; N. A.A. Fatah; M. Y.S. Hamid; Y. Gambo; A. A. Abdulrasheed; N. S. Hassan

doi:10.1016/j.ijhydene.2019.04.067

Enhanced n-hexane hydroisomerization over bicontinuous lamellar silica mordenite supported platinum (Pt/HM@KCC-1) catalyst

M. Ibrahim, A. A. Jalil^*, N. F. Khusnun, N. A.A. Fatah, M. Y.S. Hamid, Y. Gambo, A. A. Abdulrasheed, N. S. Hassan

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

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.

Original language	English
Pages (from-to)	18587-18599
Number of pages	13
Journal	International Journal of Hydrogen Energy
Volume	45
Issue number	36
DOIs	https://doi.org/10.1016/j.ijhydene.2019.04.067
State	Published - 17 Jul 2020
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2019 Hydrogen Energy Publications LLC

Keywords

Acidity
Bicontinuous lamellar silica
Hydroisomerization
Mordenite
n-hexane

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.ijhydene.2019.04.067

Cite this

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title = "Enhanced n-hexane hydroisomerization over bicontinuous lamellar silica mordenite supported platinum (Pt/HM@KCC-1) catalyst",

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 Br{\o}nsted acid sites while Pt/HM possessed strong Lewis and Br{\o}nsted 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.",

keywords = "Acidity, Bicontinuous lamellar silica, Hydroisomerization, Mordenite, n-hexane",

author = "M. Ibrahim and Jalil, \{A. A.\} and Khusnun, \{N. F.\} and Fatah, \{N. A.A.\} and Hamid, \{M. Y.S.\} and Y. Gambo and Abdulrasheed, \{A. A.\} and Hassan, \{N. S.\}",

note = "Publisher Copyright: {\textcopyright} 2019 Hydrogen Energy Publications LLC",

year = "2020",

month = jul,

day = "17",

doi = "10.1016/j.ijhydene.2019.04.067",

language = "English",

volume = "45",

pages = "18587--18599",

journal = "International Journal of Hydrogen Energy",

issn = "0360-3199",

publisher = "Elsevier Ltd.",

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TY - JOUR

T1 - Enhanced n-hexane hydroisomerization over bicontinuous lamellar silica mordenite supported platinum (Pt/HM@KCC-1) catalyst

AU - Ibrahim, M.

AU - Jalil, A. A.

AU - Khusnun, N. F.

AU - Fatah, N. A.A.

AU - Hamid, M. Y.S.

AU - Gambo, Y.

AU - Abdulrasheed, A. A.

AU - Hassan, N. S.

PY - 2020/7/17

Y1 - 2020/7/17

N2 - 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.

AB - 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.

KW - Acidity

KW - Bicontinuous lamellar silica

KW - Hydroisomerization

KW - Mordenite

KW - n-hexane

UR - https://www.scopus.com/pages/publications/85064695622

U2 - 10.1016/j.ijhydene.2019.04.067

DO - 10.1016/j.ijhydene.2019.04.067

M3 - Article

AN - SCOPUS:85064695622

SN - 0360-3199

VL - 45

SP - 18587

EP - 18599

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 36

ER -

Enhanced n-hexane hydroisomerization over bicontinuous lamellar silica mordenite supported platinum (Pt/HM@KCC-1) catalyst

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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