The structural evolution of MoC and MoC/SiO under dry reforming of methane conditions: morphology and support effects.

The thermal carburization of MoO nanobelts (nb) and SiO-supported MoO nanosheets under a 1 : 4 mixture of CH : H yields MoC-nb and MoC/SiO. Following this process by Mo K-edge X-ray absorption spectroscopy (XAS) reveals different carburization pathways for unsupported and supported MoO. In particular, the carburization of α-MoO-nb proceeds MoO, and that of MoO/SiO the formation of highly dispersed MoO species.

Exploiting two-dimensional morphology of molybdenum oxycarbide to enable efficient catalytic dry reforming of methane.

The two-dimensional morphology of molybdenum oxycarbide (2D-MoCO) nanosheets dispersed on silica is found vital for imparting high stability and catalytic activity in the dry reforming of methane. Here we report that owing to the maximized metal utilization, the specific activity of 2D-MoCO/SiO exceeds that of other MoC catalysts by ca. 3 orders of magnitude.

Molybdenum carbide and oxycarbide from carbon-supported MoO nanosheets: phase evolution and DRM catalytic activity assessed by TEM and in situ XANES/XRD methods.

Molybdenum carbide (β-MoC) supported on carbon spheres was prepared via a carbothermal hydrogen reduction (CHR) method from delaminated nanosheets of molybdenum(vi) oxide (d-MoO/C). The carburization process was followed by combined in situ XANES/XRD analysis revealing the formation of molybdenum oxycarbide MoCO as an intermediate phase during the transformation of d-MoO/C to β-MoC/C. It was found that MoCO could not be completely carburized to β-MoC under a He atmosphere at 750 °C, instead a reduction in H is required.

Interaction of copper with dinitrogen tetroxide in 1-butyl-3-methylimidazolium-based ionic liquids.

Ionic liquids that are stable toward oxidation and nitration and are based on the 1-n-butyl-3-methylimidazolium cation (BMIm) can be used as solvents and reaction media for copper dissolution in liquid dinitrogen tetraoxide NO. The ionic liquid not only favors the dissociation of NO into NO and NO, but also takes part in the formation of different crystalline products. Thus, NO[BF], NO[Cu(NO)] and (BMIm)[Cu(CFCOO)] were prepared using (BMIm)A, A = [BF], (CFSO)N, CFCOO, respectively.

[Ebola hemorrhagic fever: Properties of the pathogen and development of vaccines and chemotherapeutic agents].

Ebola hemorrhagic fever (EHF) epidemic currently ongoing in West Africa is not the first among numerous epidemics in the continent. Yet it seems to be the worst EHF epidemic outbreak caused by Ebola virus Zaire since 1976 as regards its extremely large scale and rapid spread in the population. Experiments to study the agent have continued for more than 20 years.