SBA-15 as support for NiMo HDS catalysts derived from sulfur-containing molybdenum and nickel complexes: Effect of activation mode.

Huang, Z. D., Bensch, Wolfgang, Lotnyk, A., Kienle, L., Fuentes, S., Bocarando, J., Alonso, G. and Ornelas, C. (2010) SBA-15 as support for NiMo HDS catalysts derived from sulfur-containing molybdenum and nickel complexes: Effect of activation mode. Journal of Molecular Catalysis A: Chemical, 323 (1-2). pp. 45-51. DOI 10.1016/j.molcata.2010.03.009.

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Supplementary data:

Abstract

Ex situ and in situ decomposition of the sulfur-containing precursors ammonium thiomolybdate (ATM) and nickel diethyldithiocarbamate (NiDETC) was applied for the preparation of SBA-15-supported NiMo catalysts. The catalysts were characterized with X-ray diffraction (XRD), N2-physisorption and high-resolution transmission electron microscopy (HRTEM). The in situ activation performed in the presence of hydrocarbon solvent during the HDS of dibenzothiophene is more beneficial for the preparation of NiMo catalysts with a high HDS performance compared to the ex situ activation mode using a N2/H2 (10% H2) gas flow at 773 K. Low MoS2 stacking, small MoS2 slabs and a less pronounced pore blocking present in the in situ activated NiMo/SBA-15 materials might be mainly responsible for the high HDS performance. In addition, the in situ decomposition mode is a “softer” reducing atmosphere and represents a beneficial condition for the generation of the catalytic active “NiMoS” phase.

Document Type: Article
Research affiliation: Kiel University > Kiel Marine Science
OceanRep > The Future Ocean - Cluster of Excellence
Kiel University
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1016/j.molcata.2010.03.009
ISSN: 1381-1169
Projects: Future Ocean
Date Deposited: 12 Jun 2018 11:19
Last Modified: 28 Mar 2019 12:19
URI: http://oceanrep.geomar.de/id/eprint/43360

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