HDS of 4,6-dimethyldibenzothiophene over MoS2 catalysts supported on macroporous carbon coated with aluminosilicate nanoparticles

Toufic N. Aridi; Mohammed A. Al-Daous

doi:10.1016/j.apcata.2009.03.002

HDS of 4,6-dimethyldibenzothiophene over MoS₂ catalysts supported on macroporous carbon coated with aluminosilicate nanoparticles

Toufic N. Aridi
, Mohammed A. Al-Daous^*

^*Corresponding author for this work

King Fahd University of Petroleum & Minerals

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

15 Scopus citations

Abstract

Highly dispersed and stabilized aluminosilicate nanoparticles were hydrothermally grown onto the surface of macroporous carbon with the aid of polyelectrolyte multilayer structure. The formation of the anchored aluminosilicate particles was followed by SEM and ²⁷Al solid-state NMR. The acidity of the carbon-supported aluminosilicate nanoparticles was evaluated by ammonia-TPD and n-hexane cracking, which exhibited activation energy of 12 kcal mole^-1. Impregnation of the carbon-supported aluminosilicate nanoparticles with aqueous solution of molybdenum citrate complex formed at pH 1.5 produced a supported MoS₂ catalysts that exhibited HDS activity for 4,6-DMDBT ∼3.5 times higher than its aluminosilicate-free analogue. The higher activity of the catalysts is attributed to a great extent to its enhanced hydrogenation ability with no significant contribution to other reactions.

Original language	English
Pages (from-to)	180-187
Number of pages	8
Journal	Applied Catalysis A: General
Volume	359
Issue number	1-2
DOIs	https://doi.org/10.1016/j.apcata.2009.03.002
State	Published - 15 May 2009

Bibliographical note

Funding Information:
We wish to thank Prof. S.A. Ali of the Chemistry Department for synthesizing the hydrophobically modified polyelectrolyte, Dr. S. Mehta of Saudi Aramco R&D center for the SEM analysis, Dr. K-H. Choi of Saudi Aramco R&D center for his helpful discussion, and KFUPM for supporting this work (project number IN070344).

Keywords

4,6-Dimethyldibenzothiophene
Acidic support
Carbon
Hydrodesulfurization
Hydrothermal synthesis
Molybdenum sulfide
Polyelectrolyte

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology

Access to Document

10.1016/j.apcata.2009.03.002

Cite this

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title = "HDS of 4,6-dimethyldibenzothiophene over MoS2 catalysts supported on macroporous carbon coated with aluminosilicate nanoparticles",

abstract = "Highly dispersed and stabilized aluminosilicate nanoparticles were hydrothermally grown onto the surface of macroporous carbon with the aid of polyelectrolyte multilayer structure. The formation of the anchored aluminosilicate particles was followed by SEM and 27Al solid-state NMR. The acidity of the carbon-supported aluminosilicate nanoparticles was evaluated by ammonia-TPD and n-hexane cracking, which exhibited activation energy of 12 kcal mole-1. Impregnation of the carbon-supported aluminosilicate nanoparticles with aqueous solution of molybdenum citrate complex formed at pH 1.5 produced a supported MoS2 catalysts that exhibited HDS activity for 4,6-DMDBT ∼3.5 times higher than its aluminosilicate-free analogue. The higher activity of the catalysts is attributed to a great extent to its enhanced hydrogenation ability with no significant contribution to other reactions.",

keywords = "4,6-Dimethyldibenzothiophene, Acidic support, Carbon, Hydrodesulfurization, Hydrothermal synthesis, Molybdenum sulfide, Polyelectrolyte",

author = "Aridi, \{Toufic N.\} and Al-Daous, \{Mohammed A.\}",

note = "Funding Information: We wish to thank Prof. S.A. Ali of the Chemistry Department for synthesizing the hydrophobically modified polyelectrolyte, Dr. S. Mehta of Saudi Aramco R\&D center for the SEM analysis, Dr. K-H. Choi of Saudi Aramco R\&D center for his helpful discussion, and KFUPM for supporting this work (project number IN070344). ",

year = "2009",

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doi = "10.1016/j.apcata.2009.03.002",

language = "English",

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pages = "180--187",

journal = "Applied Catalysis A: General",

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AU - Aridi, Toufic N.

AU - Al-Daous, Mohammed A.

N1 - Funding Information: We wish to thank Prof. S.A. Ali of the Chemistry Department for synthesizing the hydrophobically modified polyelectrolyte, Dr. S. Mehta of Saudi Aramco R&D center for the SEM analysis, Dr. K-H. Choi of Saudi Aramco R&D center for his helpful discussion, and KFUPM for supporting this work (project number IN070344).

PY - 2009/5/15

Y1 - 2009/5/15

N2 - Highly dispersed and stabilized aluminosilicate nanoparticles were hydrothermally grown onto the surface of macroporous carbon with the aid of polyelectrolyte multilayer structure. The formation of the anchored aluminosilicate particles was followed by SEM and 27Al solid-state NMR. The acidity of the carbon-supported aluminosilicate nanoparticles was evaluated by ammonia-TPD and n-hexane cracking, which exhibited activation energy of 12 kcal mole-1. Impregnation of the carbon-supported aluminosilicate nanoparticles with aqueous solution of molybdenum citrate complex formed at pH 1.5 produced a supported MoS2 catalysts that exhibited HDS activity for 4,6-DMDBT ∼3.5 times higher than its aluminosilicate-free analogue. The higher activity of the catalysts is attributed to a great extent to its enhanced hydrogenation ability with no significant contribution to other reactions.

AB - Highly dispersed and stabilized aluminosilicate nanoparticles were hydrothermally grown onto the surface of macroporous carbon with the aid of polyelectrolyte multilayer structure. The formation of the anchored aluminosilicate particles was followed by SEM and 27Al solid-state NMR. The acidity of the carbon-supported aluminosilicate nanoparticles was evaluated by ammonia-TPD and n-hexane cracking, which exhibited activation energy of 12 kcal mole-1. Impregnation of the carbon-supported aluminosilicate nanoparticles with aqueous solution of molybdenum citrate complex formed at pH 1.5 produced a supported MoS2 catalysts that exhibited HDS activity for 4,6-DMDBT ∼3.5 times higher than its aluminosilicate-free analogue. The higher activity of the catalysts is attributed to a great extent to its enhanced hydrogenation ability with no significant contribution to other reactions.

KW - 4,6-Dimethyldibenzothiophene

KW - Acidic support

KW - Carbon

KW - Hydrodesulfurization

KW - Hydrothermal synthesis

KW - Molybdenum sulfide

KW - Polyelectrolyte

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