Role of rhenium in bimetallic reforming catalysts |
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| Authors: | J Margitfalvi S Gbölös E Kwaysser M Hegedüs F Nagy and L Koltai |
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| Institution: | (1) Central Research Institute for Chemistry of the Hungarian Academy of Sciences, Pusztaszeri út 59-67, 1025 Budapest;(2) Present address: Department of Applied Chemistry, Technical University of Budapest, Egri József u. 20=22, 1111 Budapest, Hungary |
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| Abstract: | The influence of rhenium on the behavior of a Pt/Al2O3 catalyst was studied in n-hexane reaction by means of dilution of the catalyst bed with Re/Al2O3. Parallel to activity, selectivity and ageing data obtained in slug pulse and continuous flow reactors, the amount of the surface carbon formed during the reaction was determined and its reactivity in hydrogen atmosphere was also studied. It is suggested that in the presence of rhenium due to the increase in the amount of hydrogen available for hydrogen consuming reactions including hydrodepolymerization of the carbonaceous surface overlayer, the routes of ageing processes are changed, resulting in lower carbon content on the catalyst and less pronounced catalyst deactivation.
               Pt/Al2O3     - ,       Re/Al2O3.  ,   ,  , ,  . , , , , , , , .
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