III International Conference

PP-II-155СATALYTIC SYNTHESIS OF COMPOUNDS FOR ENVIRONMENT CONTROLZhaksibayev M.Z., Pak A.M., Kartonozhkina O.I.D.V. Sokolsky Institute of Organic Catalysis and Electrochemisrty MS&HE RK,Almaty, Republic of KazakhstanE-mail: orgcat@nursat.kzThe protection of useful plants with synthetic pheromones and attractants of harmfulinsects is characterized by absolute safety for an environment in contrast to insecticidespoisoning ground and water. At hydrogenation 5,17-docosadiine on 10% Cu/γ-Al 2 O 3modified by europium oxide (Eu 1-10 %) under hydrogen pressure 8МPа and 393К isconverted to 5,17-docosadiene with 100 % yield. 5,17-docosadiene is attractant of gipsymoth which is pest of forest and fruit trees. The tests in woods of Beltswill have shown highbiological activity of attractant.Synthetic sexual pheromones and attractants of pest insects are used for revealing of pestsand forecasting of their development with the purpose of definition of exact terms ofprotective chemical actions that reduces use of insecticides poisoning ground and water. Incase of use of pheromones or attractants for pest control it is not necessary to apply thechemicals. In both cases it results in improvement of a condition of environment.On developed 10-30% Cu/γ-Al 2 O 3 -catalysts under the certain conditions ofhydrogenation 5,17-docosadiine is converted into 5,17-z,z-docosadiene with 100 % yield butreaction duration is very long. In this connection the most active catalyst 10% Cu/ γ-Al 2 O 3was modified. The modifier was selected taking in account the earlier carried out quantumchemicalcalculations. As strengthening of donor properties of the catalyst raises a part ofgiving electron transfer at adsorption of acethylene compounds and promoting to looseningthe triple bond resulting to growth of activity and selectivity of its hydrogenation therefore asmodifier europium oxide with strong donor properties was selected. The contents of europiumin the catalyst was varied from 1 to 10 %. Catalysts were investigated by methods of XRD,BET, ТPD, electronic microscopy.On all modified catalysts under hydrogen pressure 8 МPа and temperature 393 К,6-8 МПа and 423 К 5,17-docosadiine is converted to cis-,cis-5,17-docosadiene with 100 %yield. Reaction stops spontaneously. The rate of reaction increases and reaction durationdecreases: by 5,8 times at Eu contents from 1 to 3 %; by 3,8 times on catalysts with 7 and10 % Eu. The maximal decrease of reaction duration by 11,6 times and the maximal rate of450