Premium
Pore diffusion simulation model of bimodal catalyst for Fischer‐Tropsch synthesis
Author(s) -
Xu Bolian,
Fan Yining,
Zhang Yi,
Tsubaki Noritatsu
Publication year - 2005
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.10469
Subject(s) - fischer–tropsch process , catalysis , slurry , chemical engineering , diffusion , pellet , particle size , particle (ecology) , cobalt , materials science , phase (matter) , catalyst support , chemistry , organic chemistry , composite material , thermodynamics , selectivity , metallurgy , physics , oceanography , engineering , geology
The Fischer‐Tropsch (FT) synthesis reaction was conducted using bimodal catalyst in a slurry phase reactor. The bimodal catalyst was prepared from a bimodal support which was tailor‐made by introducing SiO 2 sol directly into the large pores of a SiO 2 gel pellet The bimodal catalyst exhibited significantly higher activity in the slurry‐phase Fischer‐Tropsch synthesis than in other unimodal catalysts. The support with a large surface area allowed a highly dispersed cobalt particle, and its large pore size improved the diffusion of reactants and products. The diffusion of reactants inside the catalyst pores was simulated, and the effects of pore structure and pore size on catalytic performances were consistent with the simulation results. © 2005 American Institute of Chemical Engineers AIChE J, 2005