Electron Tomography Reveals the Active Phase-Support Interaction in Sulfidic Hydroprocessing Catalysts

被引：10

作者：

Eijsbouts, Sonja ^{[1
]}

Li, Xuanqi ^{[2
]}

Juan-Alcaniz, Jana ^{[1
]}

van den Oetelaar, Leon C. A. ^{[1
]}

Bergwerff, Jaap A. ^{[1
]}

Loos, Joachim ^{[2
]}

Carlsson, Anna ^{[3
]}

Vogt, Eelco T. C. ^{[1
]}

机构：

[1] Albemarle Catalysts Co BV, Res Ctr Amsterdam, POB 37650, NL-1030 BE Amsterdam, Netherlands

[2] DSM Resolve, Chemelot Campus,Urmonderbaan 22, NL-6167 RD Geleen, Netherlands

[3] Thermo Fischer Sci, Achtseweg Noord 5, NL-5651 GG Eindhoven, Netherlands

来源：

ACS CATALYSIS | 2017年 / 7卷 / 07期

关键词：

Heterogeneous catalysis; electron microscopy; tomography; molybdenum disulfide; porous support; HYDROTREATING CATALYSTS; HIGH-RESOLUTION; HAADF-STEM; HYDRODESULFURIZATION CATALYSTS; MOS2; CATALYSTS; 2D MORPHOLOGY; GAMMA-AL2O3; DFT;

D O I：

10.1021/acscatal.7b01201

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：

Conventional two-dimensional (2D) transmission electron microscopy of sulfidic hydroprocessing catalysts can be deceiving and give the impression that parts of the support are overloaded with active phase. High-angle annular dark field scanning transmission electron microscopy tomography reveals details on the morphology of MoS2 crystallites and their interaction with the Al2O3 and TiO2 support particles. The three-dimensional (3D) reconstruction shows that the active phase is mainly present as MoS2 single slabs of various shapes aligned with the support. It becomes clear that the surface of the support particles is, in fact, only partly covered by the active phase and the pores remain accessible for reactant molecules.

引用

页码：4817 / 4821

页数：5

共 23 条

[1]

Arslan I., 2008, J AM CHEM SOC, V130, P5716

[2] Quantitative Two-Dimensional (2D) Morphology-Selectivity Relationship of CoMoS Nanolayers: A Combined High-Resolution High-Angle Annular Dark Field Scanning Transmission Electron Microscopy (HR HAADF-STEM) and Density Functional Theory (DFT) Study [J].

Baubet, Bertrand ;

Girleanu, Maria ;

Gay, Anne-Sophie ;

Taleb, Anne-Lise ;

Moreaud, Maxime ;

Wahl, Francois ;

Delattre, Veronique ;

Devers, Elodie ;

Hugon, Antoine ;

Ersen, Ovidiu ;

Afanasiev, Pavel ;

Raybaud, Pascal .

ACS CATALYSIS, 2016, 6 (02) :1081-1092

[3] The influence of MoS2 slab 2D morphology and edge state on the properties of alumina-supported molybdenum sulfide catalysts [J].

Baubet, Bertrand ;

Devers, Elodie ;

Hugon, Antoine ;

Leclerc, Emmanuel ;

Afanasiev, Pavel .

APPLIED CATALYSIS A-GENERAL, 2014, 487 :72-81

[4] Overview of support effects in hydrotreating catalysts [J].

Breysse, M ;

Afanasiev, P ;

Geantet, C ;

Vrinat, M .

CATALYSIS TODAY, 2003, 86 (1-4) :5-16

[5] Morphology of WS2 nanoclusters in WS2/C hydrodesulfurization catalysts revealed by high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) imaging [J].

Carlsson, A ;

Brorson, M ;

Topsoe, H .

JOURNAL OF CATALYSIS, 2004, 227 (02) :530-536

[6] Edge wetting effects of γ-Al2O3 and anatase-TiO2 supports by MoS2 and CoMoS active phases:: A DFT study [J].

Costa, D. ;

Arrouvel, C. ;

Breysse, M. ;

Toulhoat, H. ;

Raybaud, P. .

JOURNAL OF CATALYSIS, 2007, 246 (02) :325-343

[7] High-resolution electron tomography study of an industrial Ni-Mo/γ-Al2O3 hydrotreating catalyst [J].

de Jong, KP ;

van den Oetelaar, LCA ;

Vogt, ETC ;

Eijsbouts, S ;

Koster, AJ ;

Friedrich, H ;

de Jongh, PE .

JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (21) :10209-10212

[8] Rippled and Helical MoS2 Nanowire Catalysts: An Aberration Corrected STEM Study [J].

Deepak, Francis Leonard ;

Esparza, Rodrigo ;

Borges, Belsay ;

Lopez-Lozano, Xochitl ;

Jose-Yacaman, Miguel .

CATALYSIS LETTERS, 2011, 141 (04) :518-524

[9] Mixed oxide supported hydrodesulfurization catalysts - a review [J].

Dhar, GM ;

Srinivas, BN ;

Rana, MS ;

Kumar, M ;

Maity, SK .

CATALYSIS TODAY, 2003, 86 (1-4) :45-60

[10] MoS2 morphology and promoter segregation in commercial Type 2 Ni-Mo/Al2O3 and Co-Mo/Al2O3 hydroprocessing catalysts [J].

Eijsbouts, S ;

van den Oetelaar, LCA ;

van Puijenbroek, RR .

JOURNAL OF CATALYSIS, 2005, 229 (02) :352-364

← 1 2 3 →