Ultra-deep hydrodesulfurization of 4, 6-dimethyldibenzothiophene over Mo sulfide catalysts supported on TiO2-Al2O3 composite

Kazushige Takahashi; Youssef Saih; Kohichi Segawa

Ultra-deep hydrodesulfurization of 4, 6-dimethyldibenzothiophene over Mo sulfide catalysts supported on TiO₂-Al₂O₃ composite

Kazushige Takahashi^*, Youssef Saih, Kohichi Segawa

^*Corresponding author for this work

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

6 Scopus citations

Abstract

We have prepared TiO₂-Al₂O₃ composites by chemical vapor deposition technique using TiCl₄ as a precursor. A high dispersion of TiO₂ over γ-Al₂O₃ has been elucidated using nitrogen adsorption at 77 K, X-ray photoelectron spectroscopy and X-ray fluorescence measurements. Mo/TiO₂-Al₂O₃ (10.2 wt% TiO₂) catalysts exhibit a much higher hydrodesulfurization activity for 4,6-dimethyldibenzothiophene compared to those supported on alumina or titania under mild operating conditions (573K, 3MPa). XPS investigations indicated that molybdenum phases supported on TiO₂-Al₂O₃ composites present higher reducibility/sulfidability properties compared to those supported on alumina.

Original language	English (US)
Pages (from-to)	311-314
Number of pages	4
Journal	Studies in Surface Science and Catalysis
Volume	145
State	Published - 2002
Externally published	Yes

ASJC Scopus subject areas

Catalysis
Condensed Matter Physics
Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

Cite this

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title = "Ultra-deep hydrodesulfurization of 4, 6-dimethyldibenzothiophene over Mo sulfide catalysts supported on TiO2-Al2O3 composite",

abstract = "We have prepared TiO2-Al2O3 composites by chemical vapor deposition technique using TiCl4 as a precursor. A high dispersion of TiO2 over γ-Al2O3 has been elucidated using nitrogen adsorption at 77 K, X-ray photoelectron spectroscopy and X-ray fluorescence measurements. Mo/TiO2-Al2O3 (10.2 wt% TiO2) catalysts exhibit a much higher hydrodesulfurization activity for 4,6-dimethyldibenzothiophene compared to those supported on alumina or titania under mild operating conditions (573K, 3MPa). XPS investigations indicated that molybdenum phases supported on TiO2-Al2O3 composites present higher reducibility/sulfidability properties compared to those supported on alumina.",

author = "Kazushige Takahashi and Youssef Saih and Kohichi Segawa",

year = "2002",

language = "English (US)",

volume = "145",

pages = "311--314",

journal = "Studies in Surface Science and Catalysis",

issn = "0167-2991",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - Ultra-deep hydrodesulfurization of 4, 6-dimethyldibenzothiophene over Mo sulfide catalysts supported on TiO2-Al2O3 composite

AU - Takahashi, Kazushige

AU - Saih, Youssef

AU - Segawa, Kohichi

PY - 2002

Y1 - 2002

N2 - We have prepared TiO2-Al2O3 composites by chemical vapor deposition technique using TiCl4 as a precursor. A high dispersion of TiO2 over γ-Al2O3 has been elucidated using nitrogen adsorption at 77 K, X-ray photoelectron spectroscopy and X-ray fluorescence measurements. Mo/TiO2-Al2O3 (10.2 wt% TiO2) catalysts exhibit a much higher hydrodesulfurization activity for 4,6-dimethyldibenzothiophene compared to those supported on alumina or titania under mild operating conditions (573K, 3MPa). XPS investigations indicated that molybdenum phases supported on TiO2-Al2O3 composites present higher reducibility/sulfidability properties compared to those supported on alumina.

AB - We have prepared TiO2-Al2O3 composites by chemical vapor deposition technique using TiCl4 as a precursor. A high dispersion of TiO2 over γ-Al2O3 has been elucidated using nitrogen adsorption at 77 K, X-ray photoelectron spectroscopy and X-ray fluorescence measurements. Mo/TiO2-Al2O3 (10.2 wt% TiO2) catalysts exhibit a much higher hydrodesulfurization activity for 4,6-dimethyldibenzothiophene compared to those supported on alumina or titania under mild operating conditions (573K, 3MPa). XPS investigations indicated that molybdenum phases supported on TiO2-Al2O3 composites present higher reducibility/sulfidability properties compared to those supported on alumina.

UR - http://www.scopus.com/inward/record.url?scp=0041807602&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0041807602

SN - 0167-2991

VL - 145

SP - 311

EP - 314

JO - Studies in Surface Science and Catalysis

JF - Studies in Surface Science and Catalysis

ER -

Ultra-deep hydrodesulfurization of 4, 6-dimethyldibenzothiophene over Mo sulfide catalysts supported on TiO₂-Al₂O₃ composite

Abstract

ASJC Scopus subject areas

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