Objetivo PREPARATION OF LIQUID FUELS FROM COAL IS ONE OF THE MAJOR ROUTES TO MAKE THE EUROPEAN ENCONOMY MORE INDEPENDENT OF PETROLEUM. THE WELL-KNOWN FISCHER-TROPSCH SYNTHESIS (WHICH TRANSFORMS CO + H2 INTO HYDROCARBONS, ALCOHOLS AND OLEFINS) HAS DEMONSTRATED ITS TECHNICAL FEASIBILITY. THE MAJOR DISADVANTAGES IS THE LACK OF SELECTIVITY TO OBTAIN HIGHER YIELDS OR GASOLINE AND/OR DIESEL, WHICH IS INHERENT TO THE CHEMICAL MECHANISM (A POLYMERIZATION SCHEME ACCORDING TO SCHULZ-FLORY KINETICS) WITH THE TYPE OF CATALYSTS PRESENTLY USED. TO BE APPLICABLE IN EUROPEAN ECONOMIC CONDITIONS, SCHULZ-FLORY KINETICS WILL HAVE TO BE CIRCUMVENTED TO IMPROVE SELECTIVITY. THIS REQUIRES THE DEVELOPMENT OF NEW CATALYSTS AND THE OPTIMISATION OF THEIR USE. THIS WORK INVOLVES THE DEVELOPMENT AND OPTIMISATION OF CATALYSTS FOR THE HIGH SELECTIVITY PREPARATION OF HYDROCARBONS, OLEFINS AND ALCOHOLS FROM COAL. WITH THESE CATALYSTS IT SHOULD BE POSSIBLE TO SYNTHESIZE MOTOR FUELS IN A DIRECT PROCESS WHICH WILL NOT REQUIRE MAJOR REFINERY OPERATIONS AFTER SYNTHESIS. FOR THIS PURPOSE, A BATCH REACTOR AND A CONTINUOUS REACTOR WITH A GAS CHROMATOGRAPH HAVE BEEN INSTALLED. THE ACTIVE METAL OF THE CATALYST IS EITHER RUTHENIUM OR COBALT. THE SUPPORTS USED ARE KIESELGUHR AND MICROPOROUS ALUMINA. THE CATALYSTS WERE CALCINATED IN AIR AND THEN REDUCED UNDER HYDROGEN IN THE REACTOR (SO THAT THEY BECOME ACTIVE). THE INDUSTRIAL FISCHER-TROPSCH CATALYSTS TESTED (11 % - 16 % CO/KIESELGUHR) ALL SHOWED SCHULZ-FLORY BEHAVIOUR. THE RESULTS OBTAINED HERE SHOW THAT WITH PARTICULAR TYPES OF CATALYST (2 % CO/ALUMINA OR 8 % RU/ALUMINA) IT IS POSSIBLE TO ACHIEVE SELECTIVE CUTS, DIFFERING FROM THE USUAL TYPE OF PRODUCT DISTRIBUTION OBTAINED WITH SCHULTZ-FLORY KINETICS. WITH BOTH CO AND RU THE MAXIMUM YIELD WAS OBTAINED FOR DODECANE (CARBON NUMBER 12) AND ROUGHLY 50 % OF THE YIELD HAD A CARBON NUMBER BETWEEN 10 AND 15. IT SEEMS THAT THE PORE DIAMETER OF THE SUPPORT (VARIED OVER A WIDE RANGE : 25 - 3000 A) DOES NOT INFLUENCE THE PRODUCT DISTRIBUTION, WHILE THE DEGREE OF LOADING WITH THE ACTIVE METAL DOES : HIGHER CARBON NUMBERS ARE FORMED WITH DECREASING CO LOADING, WHILE FOR RU THE OPPOSITE IS OBSERVED. IN FUTURE WORK, TWO STANDARD CATALYSTS (LOW CO LOADING ON ALUMINA OR HIGH RU LOADING ON ALUMINA) WILL BE USED AND THE DIESEL YIELDS OF THESE CATALYSTS WILL BE DETERMINED. LATER, CATALYST MODIFICATION (USING PROMOTING ELEMENTS) AND FURTHER PHYSICAL CHARACTERIZATION WILL BE CARRIED OUT IN ORDER TO UNDERSTAND THE CATALYST BEHAVIOUR AND TO POSSIBLY IMPROVE THESE YIELDS. Programa(s) PRE-ENNONUC 2C - Energy research and development programme (EEC), 1979-1983 Tema(s) Data not available Convocatoria de propuestas Data not available Régimen de financiación Data not available Coordinador KATHOLIEKE UNIVERSITEIT LEUVEN Aportación de la UE Sin datos Dirección CENTRUM VOOR OPPERVLAKTESCHEIKUNDE EN COLLOIDALE SCHEIKUNDE DE CROYLAAN 42 3030 HEVERLEE Bélgica Ver en el mapa Coste total Sin datos Participantes (1) Ordenar alfabéticamente Ordenar por aportación de la UE Ampliar todo Contraer todo COMPAGNIE FRANCAISE DU RAFFINAGE Francia Aportación de la UE Sin datos Dirección PARIS Ver en el mapa Coste total Sin datos
