Objetivo Foreseen ResultsThe project expects to develop new highly selective methods of industrial processing for oxidative conversion of hydrocarbons which have following economic and environmental benefits :substantial increase of main product selectivity and yield;less impute of starting compounds per unit of final product;essential decrease in reaction side-products and wastes;more efficient (at the less cost and energy) main product separation and effluents utilization;the feasibility of reactions that are performed currently via more complex and less safe procedures or not in use due to their low efficiency.Environmental, safety, economic and technical demands require new approaches in chemical manufacturing. In the heterogeneous catalytic transformation of chemical raw materials into useful industrial products it is the reaction operating which often determines the economic feasibility of a process. Recent studies (see references in full description) have shown that unsteady-state catalysis applied to reactor design leads to significant increases in process efficiency. For example, in o-xylene oxidation to phthalic anhydride the selectivity towards the main product increased from 70 up to 97% when applying unsteady-state catalysis.The project presents a novel approach to the application of unsteady-state catalysis for reactor design in the oxidative conversion of hydrocarbons to added value chemical products.The following reactions will be dealt with :oxidative conversion of methane to C2+ hydrocarbons over mixed-oxides catalysts;oxidative conversion of methane into synthesis gas over noble metal supported catalysts;oxidation of aromatics (o-xylene and toluene) over vanadium based catalysts to the corresponding carboxylic acids or their anhydrides. The understanding of the reaction mechanism and the dynamics of individual reaction steps is crucial for process optimization and reactor design in unsteady-state catalysis. Our approach links experimental studies of kinetics with mathematical modelling of reaction kinetics. For this purpose we plan to take advantage and conjugate the expertise of our research teams working in the field. The goal to be achieved is to raise selectivity and yield of reaction products. An optimal state of the catalytic surface is necessary to attain the goal and is implicit in this study.The project is subdivided into several tasks : a) study of the reaction kinetic and the nature of catalytic active sites; b) modelling of reaction kinetics and stimulation of non-steady-state reaction performance; c) unsteady-state reactor design.The parameters governing efficient unsteady-state catalysis will be individualized and systematically analyzed. Based on the mathematical modelling of reaction kinetics the simulations of the real operating conditions will be carried out.The optimal conditions found will be tested experimentally via three basic unsteady-state reactors :reversed-flow reactor;reactor with periodic operations;dual reactor system (spatial unsteady-state control). Ámbito científico natural scienceschemical sciencesorganic chemistryorganic acidsnatural scienceschemical sciencesorganic chemistryhydrocarbonsnatural scienceschemical sciencescatalysisnatural scienceschemical sciencesorganic chemistryaliphatic compoundsnatural sciencesmathematicsapplied mathematicsmathematical model Programa(s) FP4-INCO - Specific research, technological development and demonstration programme in the field of cooperation with third countries and international organizations, 1994-1998 Tema(s) 01020703 - Design of products and processes Convocatoria de propuestas Data not available Régimen de financiación CSC - Cost-sharing contracts Coordinador Institute for Applied Chemistry Berlin-Adlershof e.V. Aportación de la UE Sin datos Dirección 5G 9.9,Rudower Chaussee 12484 Berlin Alemania Ver en el mapa Coste total Sin datos Participantes (6) Ordenar alfabéticamente Ordenar por aportación de la UE Ampliar todo Contraer todo Ecole Polytechnique Fédérale de Lausanne Suiza Aportación de la UE Sin datos Dirección 1015 Lausanne Ver en el mapa Coste total Sin datos Institute of Bioorganic Chemistry Siberian - Russian Academy of Sciences Rusia Aportación de la UE Sin datos Dirección 5,Lavrentiev 630090 Novosibirsk Ver en el mapa Coste total Sin datos Institute of Chemical Physics - Russian Academy of Sciences Rusia Aportación de la UE Sin datos Dirección 4,Kosygina 117334 Moskva Ver en el mapa Coste total Sin datos L.V. Pisarzhevsky Institute of Physical Chemistry Nas of Ukraine Ucrania Aportación de la UE Sin datos Dirección 31,Prospect Nauki 252039 Kiev Ver en el mapa Coste total Sin datos Moscow State University 'Lomonosov' Rusia Aportación de la UE Sin datos Dirección Vorobievy gory 119899 Moskva Ver en el mapa Coste total Sin datos Universiteit Gent Bélgica Aportación de la UE Sin datos Dirección 281,Krijgslaan 9000 Gent Ver en el mapa Coste total Sin datos
