In this study, the sorption capacity of limestone samples for CO2 was investigated to determine conditions under which they can be used in high-temperature carbonate loop process. For work, from Czech Republic were used, contained a high proportion CaO (more than 97 wt.%). A total 20 cycles calcination (950 °C) and subsequent sorption–carbonation (650 performed each sample tested. The towards 2...

The discovery of carbon nanotubes produced by graphite, first reported by Iijima in 1991(S. Iijima & T. Ichihasi 1993), ushered in a new and very amazing research field in compacting gases by physisorption methods. The changes in electrical resistance, by adsorption of certain gas molecules are considerable, for example by adsorption of O2, N2, NH3 and H2 (H. Chang et al. 2001). Figure 1 depict...

Commercial zeolites with CHA, MFI, and LTL framework topology are subjected to acid treatment chromic (H2CrO4) solutions concentrations ranging between 0.1 10 w/%. As forms polymeric species as a function of concentration, specific effects obtained these three zeolites, differing by their topology, pore size, Si/Al ratios crystal size. The etched characterized X-ray diffraction, SEM, TEM, N2 ph...

An important pathway for functionalization of porphyrin-based organic-inorganic structures is the metalation porphyrins. Recently, porphyrin was demonstrated on different metal oxide surfaces, however, underlying mechanisms regarding role surface morphology, substituted metal, and ligands are still under investigation. Here we address adsorption self-metalation H2TPP a MgO(001) with low-coordin...

Syngas production via dry reforming of methane was conducted over 5 wt%Ni + xWO3/γ-Al2O3 (x = 1, 3, 5, 7, or 9 wt%) catalysts at 700 °C and ambient pressure for 7.5 h in a tubular fixed-bed reactor. Textural, morphological, catalytic properties were investigated relation to the weight percent tungsten trioxide loading. The physicochemical evaluated using XRD, N2-physisorption, TGA, H2-TPR, CO2-...