Intraparticle Modeling of Non-Uniform Active Phase Distribution Catalyst

被引:8
作者
Russo, Vincenzo [1 ,2 ]
Mastroianni, Luca [1 ]
Tesser, Riccardo [1 ]
Salmi, Tapio [2 ]
Di Serio, Martino [1 ]
机构
[1] Univ Naples Federico II, Dept Chem Sci, IT-80126 Naples, Italy
[2] Abo Akad Univ, Lab Ind Chem & React Engn, FI-20500 Turku, Finland
关键词
heterogeneous catalysis; non-uniform catalyst; intraparticle diffusion model; catalyst performance enhancement; in-series reaction modelling; HYDRODESULFURIZATION; ENHANCEMENT; SELECTIVITY; DESIGN; SHAPE;
D O I
10.3390/chemengineering4020024
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
To maximize the performances of heterogeneous catalytic reactors, it is necessary to consider many parameters. Catalytic particle morphology (dimension, shape, active phase distribution) is generally previously established and seldom considered in the optimization of the catalyst to be specific for a given process. In this work, the influence of active phase distribution within spherical catalytic particles (egg-shell, egg-yolk and egg-white), on the yield and selectivity of a product is shown for a consecutive reaction network; here, the intermediate component is the main product of interest. Intraparticle mass and energy balances under non-steady conditions were implemented. Sensitivity studies lead to the identification of the optimal conditions, thus maximizing the yield of the intermediate for each active phase distribution. It was demonstrated that the egg-shell catalyst can maximize the intermediate yield, with a lower active-phase usage.
引用
收藏
页码:1 / 15
页数:15
相关论文
共 24 条
[21]   Synthesis and characterization of Fe-Ni/γ-Al2O3 egg-shell catalyst for H2 generation by ammonia decomposition [J].
Silva, Hugo ;
Nielsen, Morten G. ;
Fiordaliso, Elisabetta M. ;
Damsgaard, Christian D. ;
Gundlach, Carsten ;
Kasama, Takeshi ;
Chorkendorff, I. B. ;
Chakraborty, Debasish .
APPLIED CATALYSIS A-GENERAL, 2015, 505 :548-556
[22]   Hydrodesulfurization catalyst bodies with various Co and Mo profiles [J].
Vakros, John ;
Papadopoulou, Christina ;
Lycourghiotis, Alexis ;
Kordulis, Christos .
APPLIED CATALYSIS A-GENERAL, 2011, 399 (1-2) :211-220
[23]   Modeling and Sensitivity Analysis of a Catalyst Pellet with Non-Uniform Activity Distribution in Fischer-Tropsch Synthesis [J].
Zarrin, Hadis ;
Sadeghi, Mohammad T. ;
Marvast, Mahdi Ahmadi .
INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING, 2009, 7
[24]   Kinetics of selective hydrogenation of pyrolysis gasoline over an egg-shell catalyst [J].
Zhou, Zhiming ;
Zeng, Tianying ;
Cheng, Zhenmin ;
Yuan, Weikang .
CHEMICAL ENGINEERING SCIENCE, 2010, 65 (05) :1832-1839