Head of laboratory “Ecological catalysis” of the institute, doctor of sciences on chemistry, Professor Arif Efendy participated with report “Selective gas-phase oxidation of monochlortoluenes over modified oxivanadium systems supported on Al₂O₃ and SiO₂” in the 28^th International Chemical Congress held in Mersin city, Turkey, on 15-21 August, and answered to the questions of participants. In the conference actual problems of modern chemistry and future perspectives was discussed.