abstracts - Институт катализа им. Г.К. Борескова

OP-II-2oscillations of E Pt and pH have been found out [5-7]. The multiple steady states phenomenonin reaction of maleic anhydride synthesis from acetylene and CO was discovered [8].The analysis of the information concerning reaction mechanism with the criticalphenomena and experience of such processes studying [5-7] allow us to formulate the featuresof homogeneous catalytic reactions mechanisms which can become the reason of nontrivialdynamic behaviour:1) Presence of nonlinear stages in the process mechanism (reaction betweenintermediates, presence of one or more catalysts);2) Participation of active particles formation and destruction stages, i.e. chainmechanisms of the catalytic process;Presence in the mechanism schema the positive (autocatalysis) and negative(autoinhibition) feedbacks.The study of reaction (3) in solutions of Pd (II) iodide complexes allow us to suppose anautocatalysis by hydride particles HPdI, the presence of active particles formation anddestruction stages, and features of the chain multiroute process display.We are thinking, that mechanisms of many processes in organometallic catalysis allow toexpect occurrence of self-oscillations and other critical phenomena. The searching of suchphenomena is important for development of the catalytic reactions mechanisms theory, andtheir presence is the powerful tool of hypotheses discrimination [7].Work is executed at financial support of the Russian Foundation for Basic Research(Projects №№ 00-03-32037 and № 05-03-33151)Литература:[1] R. J. Field, M. Burger, Oscillations and Travelling Waves in Chemical Systems, Wiley,New York, 1985.[2] M. M Slin’ko, N. Jaeger, Oscillating Heterogeneous Catalytic Systems, Elsevier, Studiesin Surface Science and Catalysis, 1994, 86, 1 – 408.[3] M. G. Roelofs, E. Wasserman, J. H. Jensen, A. E. Nader, J. Am. Chem. Soc., 1987, 109,4207 – 4217.[4] G. M. Shul’akovsky, O. N. Temkin, N. V. Bykanova, A. N. Nyrkova, in book: Chemicalkinetics in catalysis: Kinetic models of liquid-phase reactions, Chernogolovka: IPC,1985, 112.[5] A.V. Malashkevich , L.G. Bruk, O.N. Temkin, J. Phys. Chem., A, 1997, 101, 51, 9825 -9827.[6] S. N. Gorodskii, A. N. Zakharov. A. V. Kulik, Bruk, O. N. Temkin, Kinetics andCatalysis, 2001, 42, 2, 280 – 291.[7] S. N. Gorodskii, E. S. Kalenova, L. G. Bruk, O. N. Temkin, Russ. Chem. Bull., 2003, 52,7, 1534 - 1543.[8] L. G. Bruk, I. V. Oshanina, A. S. Zakieva, A. P. Kozlova, O. N. Temkin, Kinetics andCatalysis, 1998, 39, 2, 183 – 186.183