Nanocomposite MFI – Ceramic hollow fibres: Prospects for CO2 separation

Nanocomposite MFI-alumina and FAU-alumina Membranes: Synthesis, Characterization and Application to Paraffin Separation and CO2Capture

“…Although the methodology here proposed is far from being optimized, this new nanocomposite FAU membrane offers a good compromise between permeance and selectivity in the separation of CO 2 /N 2 equimolar mixtures. The reproducibility of this FAU membrane synthesis has not been studied in this work, but is probably better than in the preparation of film-like membranes, as already reported for MFI membranes [15][16][17][18][19][20][21][22]. Further development in the near future will focus on the reduction of useless zeolite in larger pores by impregnating and wrapping the tubes during the synthesis, and on the minimization of intercrystalline defects by optimizing the growth conditions.…”

“…In addition to film-like zeolite membranes, nanocomposite MFI-alumina architectures (prepared either as tubes or hollow fibres) have shown high potential to improve membrane reproducibility and the gas permeation and separation performance [15][16][17][18][19][20][21][22]. In this architecture, in contrast to a film, the active phase is embedded into the host ceramic alumina porous network via pore-plugging in situ hydrothermal synthesis (without seeding).…”

Nanocomposite MFI-alumina hollow fibre membranes prepared via pore-plugging synthesis: Influence of the porous structure of hollow fibres on the gas/vapour separation performance

“…We have recently presented the extension of the nanocomposite MFI-alumina concept to hollow fibre geometries [18][19][20]. These materials have shown promising separation performance in two relevant industrial separations: (1) CO 2 /N 2 and (2) PX/MX and PX/OX.…”

Advances of zeolite based membrane for hydrogen production via water gas shift reaction

“…Hasegawa et al [73] modified Y-type zeolite membranes by Pt catalyst. Pt catalyst was used to improve the CO conversion and selectivity by dispersing it in the zeolite membrane (ZSM-5) [77,20,55,16,78,79]. To further optimize the performance of zeolite membranes, composite membrane was prepared by coating an Rh-loaded C-Al 2 O 3 membrane with a defect-free SiO 2 layer hence SiO2/Rh/C-Al 2 O 3 membrane can improve the CO oxidation and the H 2 production will increase rapidly [80,81].…”