Capturing CO by ceria and ceria-zirconia nanomaterials of different origin.

Ceria and ceria-zirconia nanomaterials of different origin were studied in order to elucidate the role of their structural and textural characteristics in controlling the performance towards CO capture. Two commercial cerias and two home-prepared samples, CeO and CeO-ZrO (75% CeO) mixed oxide, were investigated. The samples were characterized by a number of analytical techniques including XRD, TEM, N-adsorption, XPS, H-TPR, Raman and FTIR spectroscopy.

In situ FTIR Spectroscopy as a Tool for Investigation of Gas/Solid Interaction: Water-Enhanced CO2 Adsorption in UiO-66 Metal-Organic Framework.

In situ infrared spectroscopy is an inexpensive, highly sensitive, and selective valuable tool to investigate the interaction of polycrystalline solids with adsorbates. Vibrational spectra provide information on the chemical nature of adsorbed species and their structure. Thus, they are very useful for obtaining molecular level understanding of surface species.

Silver-catalyzed low-temperature CO isotopic scrambling reaction: 12C16O + 13C18O → 12C18O + 13C16O.

In this paper we report on low-temperature CO isotopic scrambling ((12)C(16)O + (13)C(18)O →(12)C(18)O + (13)C(16)O). The reaction proceeds on a commercial silver-exchanged zeolite even at about 100 K and requires an optimal reduction degree of the catalysts.