The concept of very strong metal–support interactions (VSMSI) was defined in regard to the interactions that influence the catalytic properties of catalysts due to the creation of a new phase as a result of a solid-state chemical reaction between the metal and support. In this context, the high catalytic activity of the 1%Pt/Al₂O₃ catalyst in the CO oxidation reaction at room temperature was explained. The catalyst samples were reduced at different temperatures ranging from 500 °C to 800 °C and characterized using TPR, O₂/H₂ titration, CO chemisorption, TPD-CO, FTIR-CO, XRD, and TOF-SIMS methods. Based on the obtained results, it was claimed that with very high temperature reduction (800 °C), nonstoichiometric platinum species [Pt(Cl)O_x] strongly anchored to Al₂O₃ surface are formed. These species act as the oxygen adsorption sites.

This work reports the results of the studies on oxidation of carbon monoxide and H₂ over Pt supported on barium stannate (BaSnO₃—perovskite type oxide). The composition and properties of Pt/BaSnO₃ catalysts were characterized by X-ray diffraction (XRD), time-of-flight secondary ion mass spectrometry (TOF–SIMS), H₂ and CO chemisorption, scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM–EDS) and tested in the reactions of carbon monoxide and hydrogen oxidation. It was stated that platinum strongly interacts with BaSnO₃. The catalytic activity and adsorption properties of Pt/BaSnO₃ catalysts are determined by these interactions. The presence of different species (which generally can be labelled as [(Pt)BaSnO₃]) resulting from platinum and BaSnO₃ chemical interaction was found by the TOF–SIMS on surface of Pt/BaSnO₃ catalysts. The mechanism of CO and H₂ oxidation over Pt/BaSnO₃ catalysts was discussed in the light of strong interactions between Pt and BaSnO₃.

During catalytic cracking of methane reaction, different carbon nanostructures can be formed. This paper shows the results of a characteristic nanostructured carbon deposit obtained during cracking of methane reaction over nanocrystalline iron catalysts with or without cobalt addition. The properties of the carbon deposit were determined by X-ray diffraction, scanning electron microscope with energy dispersive spectrometer equipment, thermogravimetry-differential thermal analysis coupled with mass spectrometry, time-of-flight secondary ion mass spectrometry analysis and surface area analysis (Brunauer-Emmett-Teller isotherm [BET]). Significant differences in the morphology and properties of the obtained carbon were found. The mechanism of the formation of carbon nanostructures for both iron catalysts is proposed.