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Crystallite Size Determination Of Highly Dispersed Unsupported MoS2Catalysts

C. Calais, N. Matsubayashi, C. Geantet, Y. Yoshimura, H. Shimada, A. Nishijima, M. Lacroix, M. Breysse
Published 1998 · Chemistry

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Crystallite size determination of MoS2particles is still a controversial problem fuelling the debate on the morphology of hydrotreating catalysts. The size of MoS2crystallites determined from extended X-ray absorption fine structures (EXAFS) is close to 1 nm, whereas TEM picture analysis give an average size of 3 to 4 nm. It is obvious that these techniques have intrinsic strengths and weaknesses and that the results may not be comparable because of these differences. However, it is our intention to obtain a better understanding of these crystallite sizes by studying the dispersed unsupported solids. Various techniques were used: nitrogen adsorption–desorption, X-ray diffraction (XRD), XAFS, TEM, and temperature-programmed reduction (TPR) and the results were compared and discussed. The samples were prepared by thiosalt decomposition or molten salt synthesis. These solids presented different morphologies, the latter method providing higher surface area samples. The specific surface areas varied from 4 to 125 m2/g and, depending on the method of preparation, microporous and mesoporous solids were obtained. XRD, TEM, and TPR were found to be complementary and coherent methods for determining the size parameter. EXAFS interpretation does not give consistent results due to local reorganization at the periphery of the crystallites.
This paper references
10.1016/0021-9517(84)90219-7
An EXAFS study of the structure of supported cobalt molybdate catalysts as a function of sulfiding temperature
T. G. Parham (1984)
10.1021/j150625a032
Extended X-Ray Absorption Fine Structure Study of Co-Mo Hydrodesulfurization Catalysts
B. Clausen (1981)
10.1016/0021-9517(85)90123-X
Studies of molybdenum sulfide catalysts: Effects of pretreatment on sintering, stoichiometry, and oxygen chemisorption
D. G. Kalthod (1985)
10.1016/S0166-9834(00)83333-3
A geometrical model of the active phase of hydrotreating catalysts
S. Kasztelan (1984)
10.1016/0021-9517(80)90018-4
Characterization of hydroprocessing catalysts by resolved temperature-programmed desorption, reduction and sulfiding
N. K. Nag (1980)
10.1016/0021-9517(92)90166-F
Reversible hydrogen adsorption on MoS2 studied by temperature-programmed desorption and temperature-programmed reduction
X. Li (1992)
10.1016/0926-860X(93)85133-A
MoS2 structures in high-activity hydrotreating catalysts. I: Semi-quantitative method for evaluation of transmission electron microscopy results. Correlations between hydrodesulfurization and hydrodenitrogenation activities and MoS2 dispersion
S. Eijsbouts (1993)
10.1007/BF00772599
EXAFS study on the dispersion of molybdenum sulfide catalysts on γ-Al2O3
H. Shimada (1993)
10.1006/jcat.1994.1122
Morphology Study of MOS2- and WS2-Based Hydrotreating Catalysts by High-Resolution Electron Microscopy
E. Payen (1994)
10.1016/0920-5861(91)80036-9
Preparation and stabilization of high specific area zirconia carriers
J. C. Duchet (1991)
10.1016/0022-1902(77)80105-X
Molten potassium thiocyanate: The reactions of some compounds of molybdenum, rhodium and silver
D. Kerridge (1977)
10.1016/0021-9517(90)90214-5
A temperature-programmed reduction study of sulfided CoMo/Al2O3 hydrodesulfurization catalysts
B. Scheffer (1990)
10.1006/jcat.1995.1020
Temperature-programmed reduction and HDS activity of sulfided transition metal catalysts : formation of nonstoichiometric sulfur
P. Mangnus (1995)
10.1021/ja00014a001
Theoretical x-ray absorption fine structure standards
J. Rehr (1991)
10.1016/S0167-2991(96)80221-7
Role of adsorbed hydrogen species on ruthenium and molybdenum sulfides. Characterization by inelastic neutron scattering, thermoanalysis methods and model reactions
M. Lacroix (1996)
10.1016/0021-9517(80)90109-8
Structure and properties of molybdenum sulfide: Correlation of O2 chemisorption with hydrodesulfurization activity☆
S. Tauster (1980)
10.1021/j100083a020
The Structure of Highly Dispersed SiO2-Supported Molybdenum Oxide Catalysts during Sulfidation.
M. D. Boer (1994)
10.1007/BF00807374
Particle size studies of supported metal catalysts: a comparative study by X-ray diffraction, EXAFS and electron microscopy
A. T. Ashcroft (1994)
10.1016/0920-5861(88)87045-7
Influence of sulphidation conditions on the properties of NiW/Al2O3 hydrotreating catalysts
M. Breysse (1988)
10.1016/0926-860X(91)80001-F
Molybdate catalysts prepared by a novel impregnation method: Effect of citric acid as a ligand on the catalytic activities
Y. Yoshimura (1991)
10.1016/0021-9517(86)90083-7
Optical absorption and catalytic activity of molybdenum sulfide edge surfaces
C. B. Roxlo (1986)
10.1116/1.572499
UPS investigation of poorly crystallized MOS2
K. S. Liang (1984)
10.1006/jcat.1993.1147
A New Procedure for Particle Size Determination by EXAFS Based on Molecular Dynamics Simulations
B. S. Clausen (1993)
10.1627/jpi1958.37.594
Structural Changes of Sulfided Nickel-Tungsten Catalysts during Oxidative Regeneration
N. Matsubayashi (1994)
10.1007/BF00866902
An EXAFS study of the Mo/TiO2 hydrodesulphurization catalysis
G. U. Kulkarni (1991)
10.4028/www.scientific.net/MSF.73-75.693
Hydrotreating Properties of MoS2 Catalysts Prepared from Thiocyanate Melts
C. Geantet (1991)
10.1016/S0010-8545(00)80232-5
Thio and seleno compounds of the transition metals with the do configuration
E. Diemann (1973)
10.1126/science.203.4385.1105
Molybdenum Disulfide in the Poorly Crystalline "Rag" Structure
R. Chianelli (1979)
10.1016/S0166-9834(00)84467-X
High-resolution Electron-microscopy of Hydrodesulfurization Catalysts - a Review
F. Delannay (1985)
10.1351/pac198557040603
Reporting physisorption data for gas/solid systems with special reference to the determination of surface area and porosity (Recommendations 1984)
K. S. Sing (1985)
10.1021/j100372a065
Structure of the Molybdenum Sulfide Phase in Carbon-Supported Molybdenum and Cobalt-Molybdenum Sulfide Catalysts as Studied by EXAFS.
Smam Stephan Bouwens (1990)
10.1016/S0166-9834(00)83385-0
Hydrodesulphurization activity and characterization of sulphided molybdenum and cobalt—molybdenum catalysts : Comparison of Alumina-, Silica-Alumina- and Titania-Supported Catalysts
J. Ramírez (1989)
10.1016/0378-3820(94)00100-8
Structural change of supported NiMo sulfide catalysts during the hydrogenation of coal-derived liquids
N. Matsubayashi (1995)
10.1006/jcat.1993.1046
An EXAFS Study on the Ni and W Environment in Carbon-Supported, Sulfided W and Ni-W Catalysts
S. Louwers (1993)
10.1143/JJAP.32.4641
Reproducibility Tests of Extended X-Ray Absorption Fine Structure for Aqua and Ammine Complexes of First Transition Metals in Solid and Aqueous Solution
Hideto Sakane (1993)
10.1006/jcat.1994.1168
The Role of Co in Unsupported Co-Mo Sulfides in the Hydrodesulfurization of Thiophene
K. Inamura (1994)
Alumina-supported sulfided catalysts: IV. The structure of a single MoS{sub 2} packet in terms of the electroneutrality principle
A. N. Startsev (1994)
10.1016/S0166-9834(00)80288-2
Unsupported cobalt molybdenum sulfide catalysts Part II: Characterization and evolution of physicochemical properties during catalytic reaction
M. Breysse (1984)
10.1016/0021-9517(92)90188-N
Ni EXAFS studies of the Ni-Mo-S structure in carbon-supported and alumina-supported Ni-Mo catalysts
S. Louwers (1992)
10.1016/0920-5861(95)00282-0
Deactivation of CoMo/A12O3 hydrodesulfurization catalysts during a one-year commercial run
Y. Yokoyama (1996)
Exafs: Basic Principles and Data Analysis
B. Teo (1986)



This paper is referenced by
10.1039/C0CY00050G
Model oxide supported MoS2 HDS catalysts: structure and surface properties
Federico Cesano (2011)
10.1006/JCAT.1999.2633
Hydrotreatment catalysts prepared with heteropolycompound : Characterisation of the oxidic precursors
A. Griboval (1999)
10.1063/1.4958856
Isochronal annealing effects on local structure, crystalline fraction, and undamaged region size of radiation damage in Ga-stabilized δ-Pu
Daniel Thomas Olive (2016)
10.1039/A900956F
A combined in situ X-ray absorption spectroscopy and X-ray diffraction study of the thermal decomposition of ammonium tetrathiotungstate
R. Walton (1999)
10.1006/JCAT.1998.2326
Zeolite-supported Ni and Mo catalysts for hydrotreatments. I. Catalytic activity and spectroscopy
D. Li (1999)
10.1016/J.APCATB.2014.10.046
Understanding of the effect of synthesis temperature on the crystallization and activity of nano-MoS2 catalyst
H. Zhang (2015)
10.1023/A:1019055223984
Deactivation of MoS2 catalysts during the HDS of thiophene
F. Pedraza (1999)
10.1006/JCAT.1999.2723
Zeolite-Supported Ni and Mo Catalysts for Hydrotreatments: II. HRTEM Observations
D. Li (2000)
10.1016/J.JCAT.2004.08.031
Morphology of WS2 nanoclusters in WS2/C hydrodesulfurization catalysts revealed by high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) imaging
A. Carlsson (2004)
10.1016/J.APCATA.2009.12.015
Effect of citric acid addition on the hydrodesulfurization activity of MoO3/Al2O3 catalysts
N. Rinaldi (2010)
10.1016/J.CATCOM.2009.01.019
Influence of Au promoter on hydrodesulfurization activity of thiophene over sulfided Au–Ni/SiO2 bimetallic catalysts
Zhanghuai Suo (2009)
10.1016/J.CATTOD.2008.09.041
Unsupported transition metal sulfide catalysts: 100 years of science and application
R. Chianelli (2009)
10.1016/J.MOLCATA.2009.08.001
A DFT study of the electronic structure of cobalt and nickel mono-substituted MoS2 triangular nanosized clusters
Carolina Zuriaga-Monroy (2009)
10.1006/JCAT.2001.3184
Role of HY Zeolite Mesopores in Hydrocracking of Heavy Oils
K. Sato (2001)
10.1627/JPI.50.249
Development of New CoMo HDS Catalyst for Ultra-low Sulfur Diesel Fuel Production
T. Fujikawa (2007)
10.1016/J.FUPROC.2013.01.003
Investigation of sulfur-resistant, highly active unsupported MoS2 catalysts for synthetic natural gas production from CO methanation
J. Liu (2013)
10.1016/J.APCATB.2014.05.043
The role of cobalt and nickel in deoxygenation of vegetable oils
Haiping Zhang (2014)
10.1006/JCAT.1999.2698
Ab initio study of the H2-H2S/MoS2 gas-solid interface : The nature of the catalytically active sites
P. Raybaud (2000)
10.1016/J.MOLCATA.2006.01.018
Hydrogen adsorption on a Mo27S54 cluster: A density functional theory study
Xiaodong Wen (2006)
10.1016/J.JCAT.2008.03.007
Hydrocarbon reactions on MoS2 revisited, I: Activation of MoS2 and interaction with hydrogen studied by transient kinetic experiments
M. Polyakov (2008)
10.1016/J.MCAT.2017.10.016
Hydrotreating of waste cooking oil over supported CoMoS catalyst – Catalyst deactivation mechanism study
Hui Wang (2017)
10.1016/J.APCATB.2013.11.019
Carbon nanofibres coated with Ni decorated MoS2 nanosheets as catalyst for vacuum residue hydroprocessing
J. Pinilla (2014)
10.1016/J.MOLCATA.2013.05.019
Effect of sulfidation temperature on the catalytic behavior of unsupported MoS2 catalysts for synthetic natural gas production from syngas
Z. Li (2013)
10.1016/S0926-860X(99)00050-2
Activity in hydrotreatment processes of Ni–Mo loaded zirconium phosphate Zr3(PO4)4
M. Ziyad (1999)
10.1007/S10562-007-9030-Z
Synthesis, characterization and cyclohexene hydrogenation activity of high surface area molybdenum disulfide catalysts
M. Soto-Puente (2007)
10.1006/JCAT.2000.2873
Selective hydrodesulfurization of FCC naphtha with supported MoS2 catalysts : The role of cobalt
J. Miller (2000)
10.1016/J.APCATA.2007.01.005
Understanding and predicting improved sulfide catalysts: Insights from first principles modeling
P. Raybaud (2007)
10.1016/J.FUEL.2015.07.012
Promotion effects with dispersed catalysts for residue slurry hydroconversion
T. S. Nguyen (2015)
10.1016/J.JCAT.2009.11.004
The influence of reducing and sulfiding conditions on the properties of unsupported MoS2-based catalysts
P. Afanasiev (2010)
10.1016/J.CATTOD.2004.06.078
The formation of the active phases in sulfided NiW/Al2O3 catalysts and their evolution during post-reduction treatment
D. Zuo (2004)
10.1002/QUA.25643
DFT study into the reaction mechanism of CO methanation over pure MoS2
Zhen-hua Li (2018)
10.1016/S0167-2991(99)80394-2
Highly active MoS2-based dispersed catalyst with a novel morphology
Yasuhiro Araki (1999)
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