The role of zeolites in the deactivation of multifunctional fischer-tropsch synthesis catalysts: the interaction between HZSM-5 and Fe-based Ft-catalysts

Brazilian Journal of Chemical Engineering

P. C. Zonetti²  A. B. Gaspar²  F. M. T. Mendes²  R. R. De Avillez¹  E. F. Sousa-aguiar¹  L. G. Appel² 

[1] ,INT/MCTRio de Janeiro RJ ,Brazil

关键词: Fischer-Tropsch Synthesis;    HZSM-5;    Fe;    Deactivation;   

DOI  :  10.1590/S0104-66322013000400019

来源: SciELO

【 摘 要 】

In order to produce gasoline directly from syngas, HZSM-5 can be added to the Fischer-Tropsch catalyst. However, this catalytic system shows an important deactivation rate. Aiming at describing this phenomenon, Fe-based catalysts and physical mixtures containing these catalysts and HZSM-5 were employed in this reaction. All these systems were characterized using the following techniques: XRD, XPS, TPR and TPD of CO. This work shows that HZSM-5 interacts with the Fe-based Fischer-Tropsch catalyst during the reduction step, decreasing the Fe concentration on the catalytic surface and thus lowering the activity of the catalytic system in the Fischer-Tropsch Synthesis.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License