Fischer–Tropsch synthesis using monolithic catalysts

Comparison of Fischer-Tropsch Fixed and Monolith Bed Reactors Using Pseudo-homogeneous 2D Model

“…Radial direction terms were discredited by orthogonal collocation technique based on symmetric Legendre polynomials. The feasibility of this kind of model is verified using the experimental data obtained by the works of Rafiq et al 30) and Kapteijn et al 33) on FT fixed bed and wash coated monolith bed reactors at low temperatures, respectively. As shown in Fig.…”

“…In this article, a homogeneous 2D model was developed for both FT fixed and FT monolith bed reactors in the industrial scale was developed and evaluated using experimental data reported in the literature by Rafiq et al 30) and Kaptejin et al 33) for FT fixed and FT monolith bed reactors, respectively. Also the effects of several parameters such as operating parameters, reactor structure and their thermal properties on the performance of the reactors were investigated.…”

Microstructured Al‐fiber@meso‐Al2O3@Fe‐Mn‐K Fischer–Tropsch catalyst for lower olefins

“…Therefore, more methane and other short chain molecules are produced. 63 Similarly, Iglesia et al reported their Fischer-Tropsch synthesis selectivity model with respect to diffusion limitation effect. 65 They argued that olefin readsorption and CO depletion have an opposite effect on products distribution with the varying internal diffusion length.…”

“…63 On the one hand, the pores in the catalyst would be filled with liquid products, even though the reactants are in the gas phase. With increase of the transport limitations, the C 1 5 selectivity will be increased originating from the longer residence time of lower olefins which aggravates the propagation of lower olefins.…”

“…It has been reported that monoliths with a washcoat layer of above 50 mm in thickness will suffer from decreased CO conversion activity caused from the diffusion limitations, accompanied by increase of methane selectivity. 63 Therefore, monolithic catalysts with thin catalyst layers may eliminate the effect of diffusion limitation. In this study, the core-shell Al-fiber@meso-Al 2 O 3 composite with 0.6 mm thin c-Al 2 O 3 layer eliminate the diffusion limitation undoubtedly.…”