Eggshell catalyst in Fischer–Tropsch synthesis

A simple preparation method of eggshell Ni/MgO-Al2O3 catalyst for partial oxidation of methane

“…However, some drawbacks exist in the preparation of eggshell catalysts. These include the long preparation period [4], difficulty in control of the eggshell thickness [5] and the content of the active component [6], and the high solvent cost [7]. _________________________ POM to synthesis gas is an attractive and challenging subject for using natural gas [8,9].…”

A highly efficient nano-sized Cu2O/SiO2egg-shell catalyst for C–C coupling reactions

“…In recent years, silica- 12,13 and alumina-based [14][15][16] egg-shelltype catalysts in millimeter scale have been prepared in order to avoid the diffusional restrictions of the reactants for some catalytic reactions, such as Fischer-Tropsch synthesis. 17,18 Simply, fast reactant diffusion to the active sites would occur, especially when the active metal sites are selectively located on the outer part of the support, such as the outer region of the egg shell. However, most egg-shell-type catalysts prepared using the controlled penetration of molten salt have still been focused on the millimeter scale, not the micrometer or nanometer scale.…”

Optimization of Fischer‐Tropsch Process in a Fixed‐Bed Reactor Using Non‐uniform Catalysts

“…Investigating the influence of non-uniform catalysts in the FTS, Post and Sie [15] and Van Erp et al [16] reported that the egg-shell type catalyst achieve higher yields of C 5 + . Peluso et al [19] showed that egg-shell catalysts result in higher CO conversion and valuable hydrocarbon yield. Results showed that egg-shell catalysts are more active and selective than uniform catalysts for C 5 + production.…”

“…Results showed that egg-shell catalysts are more active and selective than uniform catalysts for C 5 + production. Peluso et al [19] showed that egg-shell catalysts result in higher CO conversion and valuable hydrocarbon yield. Zarrin et al [20] showed that the optimal location of active components inside the catalyst pellet is highly dependent on the catalyst performance index, such as effectiveness factor or product yield.…”