Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia

PP-65THE EFFECT OF IMPURITIES ON THE CATALYTIC ACTIVITY OFАNTRAQUINONE IN THE PROCESS OF DELIGNIFICATIONMеnshikоv S.Yu. 1 , Vurasko A.V. 2 , Driker B.N. 2 , Mikushina Yu.V. 1 , Eryomin D.V. 11 Institute of organic synthesis URАL Branch the Russian Academy of Science,st. S.Kovalevskoj/Akademicheskaya, 22/20, Ekaterinburg, 620219, Russia2 Ural state forest engineering university,Siberian highway, 37, Ekaterinburg, 620100, RussiaFax: (343)3741189; E-mail: vurasko2010@yandex.ruKinetic and thermodynamic parameters were determined in the reaction ofreduction of anthraquinone (AQ) in water-alkaline solution. Reversible reaction AQanthrahydroquinone(АHQ) is dependent on a number of factors, basic of which are:presence a lignine-carbohydrate complex, alkaline conditions, temperature. It isobvious, that catalytic activity and ability AQ to reduction are interconnected anddefined by rate and depth of transformation in АHQ It is obvious, that the qualityindicators resulted in specifications, in an insufficient degree characterize ability AQto reduction. As objects of research used samples AQ obtained by synthesis fromphthalic anhydride and benzene (АQP), AQ, received by gas-phase anthraceneoxidations and AQ - withdrawal (АQW) of the same process .Interpretation of theexperimental data on reduction AQ spent on the equation of formal kinetics. In spiteof the fact that process of reduction AQ is homogeneous-heterogeneous reaction, it’squite well described on concentration of АHQ in a reaction mixture by the equationC = a(1− e−KT) . On the basis of data on temperature effect on initial rate of formationАHQ are estimated kinetic and thermodynamic parameters (energy of activation,Gibbs energy, enthalpy and entropy of activation) for samples AQ various ways ofreception.Temperature,°СWo,моl/l·minEnergy ofactivation,KJ/моl∆G *, КJ/моle∆H *,КJ/моl∆ S *,KJ/deg·моle40 АQP 0.00224 97.1247 99.6494 94.5237 -0.016160 АQP 0.01032 93.6315 94.3575 -70 АQP 0.0436 94.5256 94.2744 -0.000150 АQW 6.1733 66.2504 68.7516 63.5663 -0.016060 АQW 19.325 70.9645 63.4832 -0.022570 АQW 26.462 73.1799 63.4001 -0.0285157