SYNTHESİS AND STUDY OF MESOPOROUS TİTANİUM-SİLİCATE CATALYSTS

The paper presents the results of studies on the development of synthesis methods and study of the properties of a catalyst based on titanium silicalite for the synthesis of MEKmethylethylketone. Samples of titanium silicalite were synthesized with different ratios of the starting reagents - tetraethoxysilane and tetrabutoxysilane. Tetra-n-propyl ammonium hydroxide was used as a structure-forming agent. The data of IR spectroscopy and powder Xray diffraction made it possible to establish the effect of the amount of the structure-forming agent on both the structure and morphology of the titanium silicalite obtained. The main product is a mixture of TiO2 and amorphous SiO2. The dependence of the average particle size on the initial ratio of the initial reagents is established: with an increase in the initial molar ratio of the reactants, a change in the size of the catalyst particles is observed. The main indicators of the catalytic activity of the catalyst samples obtained at different initial ratios of reagents are compared. The carried out physicochemical studies on the synthesis of titanium silicalite made it possible to establish the composition that provides the maximum selectivity for the formation of methylethylketone. Keywords: methylethylketone, mesoporous titanium-silicate catalyst, catalytic activity.