Fischer-tropsch synthesis over ruthenium/Y-zeolite catalysts: Effects of the neutralizing cations of zeolites |
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| Authors: | Yu-Wen Chen Wen-Chang Hsu and Chiang-Shiang Lin |
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| Institution: | (1) Grupo de Estudos de Catálise Heterogénea, Instituto Superior Tecnico, Av. Rovisco Pais, 1096 Lisboa Codex, Portugal;(2) UA CNRS 350, Catalyse en Chime Organique, UER Sciences, 40, av. de Recteur Pineau, 86022 Poitiers Cedex, France |
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| Abstract: | The effect of steaming on HZSM 5 has been characterized by using two model reactions: n-heptane cracking and m-xylene isomerization. For both reactions, the activity of HZSM 5 was increased by steaming at low water vapor pressure, but at a high pressure it became lower than that of the non-steamed sample. Modifications in the acidity and a slight blockage of the pores by extralattice aluminium can explain this behavior.
           HZSM 5            :  - - .   HZSM 5 , ,   .   .
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