Research |
The scientific activity of the laboratory “Organic Reactions on Microporous and Mesoporous Materials” is concentrated in the field of synthesis, modification and catalysis on micro and mesoporous materials of different type:
• Synthesis and characterization of new composite materials based on nano-sized metal/metal oxide particles deposited on different types of porous supports.
Composite materials combining the properties of nano particles of transition metals and their oxides and the ordered nano-structure of different micro-, meso- and mixed micro-mesoporous supports with regulated size and architecture of the pores have been synthesized. Mesoporous oxides and silicates, carbon and zeolite molecular sieves as well as ultra-disperssed diamond powders have been used as supports. The modification with transition metals and their oxides (Fe, Co, Ni, Cu, V) is performed by different methods (conventional and solid-state ion exchange, impregnation in aqueous and organic medium, direct synthesis, etc.). These composite materials have specific reduction, magnetic, adsorption and catalytic properties.
• Synthesis and regulation of the acidic and catalytic properties of zeolites, aluminophosphates and mesoporous molecular sieves.
Different methods for synthesis and post-synthesis modification of the acidic properties of molecular sieves of different type have been elaborated: generation of proton centers and regulation of their strength by isomorphous incorporation of appropriate chemical elements in the molecular sieve framework; modification of the surrounding of the proton centers by introduction of metal ions through direct synthesis or ion exchange; variation in the proportion of the acid sites with different strength and of different type (Broensted and Lewis acid sites).
• Development of catalysts on the basis of molecular sieve materials with the potential for solving problems contributed to environmental protection and energetics.
The investigations are directed to developing of catalysts with high activity and selectivity in the following catalytic processes: Conversion of alkylaromatic hydrocarbons for selective formation of p-xylene; Conversion of methanol to hydrogen, CO and methane for obtaining ecological fuels; Catalytic combustion of volatile organic compounds by combined utilization of the adsorption and catalytic properties of different composite materials; Epoxidation of aromatic olefins in liquid phase with hydrogen peroxide for obtaining highly reactive epoxi- compounds.
WebSite
|
