Abstract-The aim of the work is to obtain citronellal that is the odoriferous substance and refers to the fragrant compounds used in perfumery and in the food industry as a flavoring. It is a raw material for producing aromatic substances -izopulegol, menthol, citronellol et al.The hydrogenation of citral to citronellal was investigated over the catalysts on the base of VIII group metals using special high-pressure kinetic (KEHP) equipment allowing to keep the liquid phase hydrogenation process for any constant hydrogen pressure in a wide variation of the experimental conditions.On the activity of the catalysts studied are located in the following sequence: NiR > Pt > Pd > Rh > Ni-black > Ir > Os > Ru.The effect of different key parameters of the process (nature of the solvent, reduction temperature of catalyst, hydrogen pressure, etc.) on the kinetics and selectivity of the hydrogenation of citral to citronellal over the supported nickel catalysts were studied.

Abstract-The zeolites and oxide catalysts are investigated in the conversion of bio-ethanol. It is shown that the formation of the products depends on the feedstock composition and the composition of the reaction mixture. It is determined that at the conversion of bio-ethanol over the zeolites 3A, 4A, 5A, and 13 X products of cracking, reforming, dehydration and oligomerization of ethylene are formed. The cerium-containing catalysts are studied via electron microscopy and temperatureprogrammed desorption of ammonia. Doping Ce/γ-Al 2 O 3 catalyst with lanthanum is shown to increase its dispersion and the number of active acid sites, thereby improving its activity.

No abstract

The effect of modifying additives of copper, neodymium and molybdenum on acidity and dispersity of nickel catalyst was studied by temperature-programmed desorption of ammonia and scanning electron microscopy methods. Their activity in the reaction of partial oxidation of methane (POM) and dry reforming of methane (DRM) were measured. The NiCuNdMo/Al 2 O 3 HZSM-5 was found to be the best catalyst. The introduction of molybdenum into the composition of NiCuNd/Al 2 O 3 HZSM-5 catalyst was determined to increase general acidity of the catalyst from 26.71•10-4 to 29.46•10-4 mol / gКt, and also it increases the dispersion of the active phases of the catalysts surface. This data of change positively affects the activity of the catalyst in POM reaction, concentration of hydrogen in the reaction product compared with NiCuNd/ Al 2 O 3 HZSM-5 increases from 60 to 70 vol. %. The investigation of the catalytic activity of NiCuNdМо/Al 2 O 3 HZSM-5 catalyst in the reaction of DRM has shown that equilibrium yield of H 2 and CO is observed in the temperature range of 650-900 °C. The main product in the process of oxidative conversion of methane by oxygen is hydrogen, whereas in the process of oxidative conversion of methane by carbon dioxide synthesis gas is formed Index Terms-Nickel-containing catalyst, methane, oxygen, carbon dioxide, hydrogen.