Temperature sensitive synthesis of γ-Al2O3 support with different morphologies for CoMo/γ-Al2O3 catalysts for hydrodesulfurization of thiophene and 4,6-dimethyldibenzothiophene

被引：32

作者：

Liu, Sijia ^{[1
]}

Liang, Xin ^{[1
]}

Zhang, Jie ^{[1
]}

Chen, Biaohua ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing, Peoples R China

来源：

CATALYSIS SCIENCE & TECHNOLOGY | 2017年 / 7卷 / 02期

基金：

中国国家自然科学基金;

关键词：

HYDROTREATING CATALYSTS; COMO CATALYSTS; COMBUSTION SYNTHESIS; MOS2; MORPHOLOGY; HDS; PHOSPHORUS; ALUMINA; CARBON; DIBENZOTHIOPHENE; PERFORMANCE;

D O I：

10.1039/c6cy02241c

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Two different kinds of gamma-Al2O3 precursors: stick-like ammonium aluminum carbonate hydroxide and willow leaf-like boehmite could be selectively synthesized via a facile hydrothermal method by just adjusting reaction temperature. After heat treatment, gamma-Al2O3 with two different morphologies (stick-like and willow leaflike) were synthesized and used as supports for CoMo hydrodesulfurization catalysts. Fourier transform infrared spectroscopy of pyridine adsorption and NH3-temperature-programmed desorption showed that stick-like gamma-Al2O3 (ACH) and willow leaf-like gamma-Al2O3 (AOH) exhibited a lower Lewis acidity than commercial gamma-Al2O3. X-ray diffraction indicated that CoMo oxidic catalysts supported on ACH and AOH contained more beta-CoMoO4 phase. X-ray photoelectron spectroscopy and high resolution transmission electron microscopy revealed that after presulfurization, more CoMoS active sites and multilayered (Co) MoS2 slabs formed on ACH and AOH supports, thereby creating catalysts with a higher hydrodesulfurization activity in the hydrodesulfurization of thiophene and 4,6-dimethyldibenzothiophene.

引用

页码：466 / 480

页数：15

共 43 条

[1]

Abdullah M., 2011, J NAT GAS CHEM, V20, P128

[2] Single step hydrothermal synthesis of 3D urchin like structures of AACH and aluminum oxide with thin nano-spikes [J].

Abdullah, Muhammad ;

Mehmood, Mazhar ;

Ahmad, Jamil .

CERAMICS INTERNATIONAL, 2012, 38 (05) :3741-3745

[3] MULTINUCLEAR MAGNETIC-RESONANCE STUDIES OF THE HYDROLYSIS OF ALUMINUM(III) .8. BASE HYDROLYSIS MONITORED AT VERY HIGH MAGNETIC-FIELD [J].

AKITT, JW ;

ELDERS, JM .

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1988, (05) :1347-1355

[4] Copolymer-controlled homogeneous precipitation for the synthesis of porous microfibers of alumina [J].

Bai, Peng ;

Su, Fabing ;

Wu, Pingping ;

Wang, Likui ;

Lee, Fang Yin ;

Lv, Lu ;

Yan, Zi-feng ;

Zhao, X. S. .

LANGMUIR, 2007, 23 (08) :4599-4605

[5] Recent studies on the preparation, activation and design of active phases and supports of hydrotreating catalysts [J].

Breysse, Michele ;

Geantet, Christophe ;

Afanasiev, Pavel ;

Blanchard, Juliette ;

Vrinat, Michel .

CATALYSIS TODAY, 2008, 130 (01) :3-13

[6] Effect of phase composition of the oxidic precursor on the HDS activity of the sulfided molybdates of Fe(II), Co(II), and Ni(II) [J].

Brito, JL ;

Barbosa, AL .

JOURNAL OF CATALYSIS, 1997, 171 (02) :467-475

[7] Relationship between the hydrodesulfurization of thiophene, dibenzothiophene, and 4,6-dimethyl dibenzothiophene and the local structure of Co in Co-Mo-S sites: Infrared study of adsorbed CO [J].

Castillo-Villalon, Perla ;

Ramirez, Jorge ;

Castaneda, Rocio .

JOURNAL OF CATALYSIS, 2012, 294 :54-62

[8] IR spectroscopy evidence of MoS2 morphology change by citric acid addition on MoS2/Al2O3 catalysts - A step forward to differentiate the reactivity of M-edge and S-edge [J].

Chen, Jianjun ;

Mauge, Francoise ;

El Fallah, Jaafar ;

Oliviero, Laetitia .

JOURNAL OF CATALYSIS, 2014, 320 :170-179

[9] Enhancement of hydrodesulfurization of 4,6-dimethyldibenzothiophene catalyzed by CoMo catalysts supported on carbon-covered γ-Al2O3 [J].

Cui, Feng ;

Li, Guangci ;

Li, Xuebing ;

Lua, Mohong ;

Li, Mingshi .

CATALYSIS SCIENCE & TECHNOLOGY, 2015, 5 (01) :549-555

[10] Synthesis of γ-Al2O3 nanowires through a boehmite precursor route [J].

Deng, Yida ;

Yang, Qi ;

Lu, Guangwei ;

Hu, Wenbin .

CERAMICS INTERNATIONAL, 2010, 36 (06) :1773-1777

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