Decomposition of methanol (DM) to CO and H2 can be catalyzed by Cu-ZnO@C core-shell and Cu-ZnO○yC yolk-shell nanoreactors at 473-573 K. It is found that the reactivity of DM catalyzed by the nanoreactors increases with an increase of the ZnO fractions in Cu-ZnO encapsulated in carbon-shell. The relatively low activation energy (Ea), low reaction temperature, and high yields of H2 in the core-shell or yolk-shell nanoreactors may be associated with the fact of high collision frequency between Cu-ZnO active species and methanol in the confined nanoreactors. By component fitted X-ray absorption near edge structure (XANES), it seems that metallic copper (Cu) plays an important role during DM.
Journal: TechConnect Briefs
Volume: 2, Materials for Energy, Efficiency and Sustainability: TechConnect Briefs 2015
Published: June 14, 2015
Pages: 136 - 138
Industry sector: Advanced Materials & Manufacturing