A task-specific ionic liquid containing a carboxylate group with the ability to dissolve metal oxide and organic ligands has been used as the solvent to prepare lanthanide complexes without the addition of extra solvent; thus a soft material with intense photoluminescence has been obtained by directly dissolving Eu(2)O(3), 2-thenoyltrifluoroacetone (TTA) and 1,10-phenanthroline (Phen) into the task-specific ionic liquid.
The bimetallic carbide catalyst Co6W6C has been shown to be useful for the reforming of methane
to synthesis gas (methane dry reforming). With use of material manufactured by Nanodyne,
work in this laboratory has indicated that the catalyst is converted to a more stable form,
containing Co, WC, and C, and this form is active and stable for the production of synthesis
gas. Further, in-house preparation can yield Co6W6C with similar catalytic properties. In this
work, the in-house catalyst was used for dry reforming at temperatures ranging from 500 °C to
850 °C, and then back down to 500 °C. The fresh and spent catalysts were characterized by
BET, XRD, SEM, and EDS. The catalyst was found to be ineffective below 850 °C. However,
once the catalyst is exposed to reactants at that temperature, the activity is much greater at
lower temperatures than the activity before exposure at 850 °C. XRD, SEM, and EDS indicate
that the low-temperature catalyst is different from that exposed to 850 °C. However, after
returning the catalyst to the lower temperatures, the structure is similar to that at 850 °C.
After reaction at 850 °C, the amount of oxygen (oxides) is decreased and the presence of carbon
is increased. Reactant methane at 850 °C (or higher) reacts with oxides left during the preparation
procedure and converts the surface to a more catalytically active state containing carbon.
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