Characterization of supported (Co)Mo catalysts by adsorption of CO followed by Infra Red spectroscopy: Effect of the support on the formation of CoMoS active sites.

International audienc

Characterization of supported (Co)Mo catalysts by adsorption of CO followed by Infra Red spectroscopy: Effect of the support on the formation of CoMoS active sites.

International audienc

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

International audienc

Relationship between phosphate structure and acid-base properties of phosphate-modified zirconia—Application to alcohol dehydration

International audienc

Edge sites of sulfide CoMo catalysts: IR and chemometric approaches

International audienc

Effect of Mg addition on the structure and performance of sulfide Mo/Al2O3 in HDS and HDN reaction

International audienc

Catalysis by sulphide: from the slab morphology characterization towards the identification of the most active site in HDS reaction

National audienc

Edge sites of sulfide CoMo catalysts: IR and chemometric approaches

International audienc

IR Spectroscopic Evidence for MoS 2 Morphology Change with Sulfidation Temperature on MoS 2 /Al 2 O 3 Catalyst

Accessed by 02/2015International audienceLow temperature CO adsorption followed by IR spectroscopy (IR/CO) characterization was used to depict the MoS2 morphology change with sulfidation temperature on MoS2/Al2O3 catalyst. It is found that the morphology of MoS2 slabs on MoS2/Al2O3 catalyst under typical sulfidation temperature range (573 to 723 K) is a truncated triangle exposing both the M-edge and S-edge. Moreover, the IR/CO data indicate that the truncation degree (ratio of S-edge/M-edge) of MoS2 slabs gradually increases with increasing sulfidation temperature. This finding is in line with density functional theory calculation on model catalysts, providing IR evidence of MoS2 morphology change with sulfidation temperature on an Al2O3-supported catalyst. As a further step, it is also found that the MoS2 morphology is strongly influenced by MoS2–Al2O3 interactions under the same sulfidation temperature

Re‐activation of aged and regenerated HDS catalysts : infra-red characterizations of active sites

International audienc