Steam reforming of methane over ordered mesoporous Ni-Mg-Al oxides.

The excellent roles of mesopores were revealed clearly in preventing Ni metal from sintering as well as in preventing inactive coke accumulation under severe reaction conditions of methane steam reforming over ordered mesoporous Ni-Mg-Al oxide catalysts.

Unique adsorption behavior of H2 and CO over group 8-10 metals encapsulated inside silica nanotubes and nanocapsules.

Various silica nanotubes and nanocapsules have been prepared successfully, possessing unique silica walls of selective H2 permeation and encapsulate group 8-10 metal particles inside and exhibit a marked stabilization effect of H2 and CO over the metals in the network of silica wall and inside nanoscale cavities.

Preferential CO oxidation promoted by the presence of H2 over K-Pt/Al2O3.

In preferential CO oxidation in H2-rich gas, K-Pt/Al2O3(K/Pt = 10) was very effective in decreasing CO concentration below 10 ppm in the 375-410 K range, and the turnover frequency of the K-Pt/Al2O3 was 20 times as high as that of Pt/Al2O3 at 353 K; furthermore, the activity of CO oxidation was promoted drastically by the presence of H2.