The main stages of the development of industrial Ag–Al₂O₃catalysts for the gas-phase epoxidation of ethylene are considered. The greatest attention is paid to the methods of preparation aimed at increasing the productivity of the last-generation catalyst systems. The results of the studies of alternative heterogeneous systems based on silicates modified by Ti, Nb, and W for liquid-phase epoxidation of ethylene with H₂O₂ are also summarized. The reasons and methods for solving the problem of their low activity/productivity and stability are analyzed, the directions of increasing the H₂O₂ utilization efficiency are evaluated.

Efficient oxygen transfer through Me–CeO ₂ interface explains higher activity of MeO _x /CeO ₂ (Me = Fe, Co, Ni) samples in deN ₂ O and NH ₃ oxidation compared with MeO _x /Al ₂ O ₃ ones.

The literature data on the direct catalytic conversion of methane into useful chemical products (Н2, С2+ hydrocarbons, methanol, formaldehyde, and higher oxygenates) were analyzed. Processes based on

In the last decade, there was observed a growing demand for both n-butanol as a potential fuel or fuel additive, and propylene as the only raw material for production of alcohol and other more bulky propylene chemical derivatives with faster growing outputs (polymers, propylene oxide, and acrylic acid). The predictable oilfield depletion and the European Green Deal adoption stimulated interest in alternative processes for n-butanol production, especially those involving bio-based materials. Their commercialization will promote additional market penetration of n-butanol for its application as a basic chemical. We analyze briefly the current status of two most advanced bio-based processes, i.e. ethanol–to-n-butanol and acetone–butanol–ethanol (ABE) fermentation. In the second part of the review, studies of n-butanol and ABE conversion to valuable products are considered with an emphasis on the most perspective catalytic systems and variants of the future processes realization.

CeO₂-Al₂O₃ oxides prepared by co-precipitation (Ce+Al) or CeOx precipitation onto Al₂O₃ (Ce/Al) to obtain dispersed CeO₂ and samples with further supported FeOx (2.5–9.9 weight% in terms of Fe) were characterized by XRD, XPS, DDPA and Raman. Fe/Ce/Al samples with lower surface concentrations of Fe³⁺ were substantially more active in N₂O decomposition at 700–900 °C. It was related to higher oxygen mobility, as estimated from ¹⁶O/¹⁸O exchange experiments and provided by preferential exposing of (Fe-)Ce oxides. Stabilization of some Ce as isolated Ce³⁺ in Fe-Ce-Al mixed oxides dominating in the bulk and surface layers of Fe/(Ce + Al) samples retards the steps responsible for fast additional oxygen transfer to the sites of O₂ desorption.