Absorption-enhanced reforming

Fig. 10.5 Greenhouse gas intensity of different hydrogen productirai methods CGH compressed gaseous hydrogen, EL electrolysis, SOT solar thermal energy, HVDC high voltage direct current, AER absorption enhanced reforming. Source LBST/FhG-IWES/Hessen Agentur [10]...

By differentiating the XANES spectra, it was identified that the intensity of the edge absorption for the catalyst was lower than that for copper foil, consistent with the nanosized dimension of the copper particles. Moreover, the positive shift of the derivative peaks at ca. 8990 and 8984 eV relative to those of copper foil suggested some alterations in the chemical environment around the copper species. Combined with the XRD results, the positive shift was tentatively assigned to a distortion of the copper lattice due to the presence of microstrain at the interface between Cu NPs and ZnO NRs. Consequently, the superior catalytic performance of the ZnO NR Cu NPs catalyst in methanol reforming was attributed to the enhanced dispersion of Cu NPs and the existence of the SMSl effect. 

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