III International Conference

PP-I-24The influence of gas mixture composition on an oscillatory mode has been investigated.In experiments were used mixtures of composition CO:O 2 = 3:2; 1:1; 1:1,1; 1:1,2 and 1:1,3.Oscillations have been fixed in experiments with the percentage of CO not more than 50 %.The oscillations in researched conditions quickly decay.E Pt,,mV4003503002502001500 20 40 60 80 100 120 140 160 180 200 220 T,minFig. 2. The oxidative carbonylation of PhA in system LiBr-PdBr 2 -H 2 O-acetone.[LiBr] 0 =0,2М; [PdBr 2 ] 0 =0,01М; [PhA] 0 =0,1М; [Н 2 О] 0 = 0,65М;V (CH3) 2СO=10mL; [CO] 0 : [O 2 ] 0 = 1:1,3The preliminary mechanism of this process was proposed. As the study of an oscillatorymode of investigated reaction shows, the active form of palladium is monovalent form.This work is executed at financial support of the Russian Foundation for Basic Research(the project № 05-03-33151).References:1. R. J. Field, M. Burger, Oscillations and Traveling Waves in Chemical Systems, Wiley, New York,(1985).2. M. M. Slinko, N. Jaeger, Oscillating Heterogeneous Catalytic Systems, Elsevier, Studies inSurface Science and Catalysis, 1994, 86, pp. 1-408.51