For the first time, a ZIF-8 membrane was grown on the inner surface of a ceramic hollow fiber via cycling precursors. The inner-side hollow fiber ZIF-8 membrane exhibits good performance for recovering hydrogen.

For the first time, a tubular asymmetric ceramic-carbonate dual phase membrane was prepared by a centrifugal casting technique and used for high temperature CO2 separation. This membrane shows high CO2 permeation flux and permeance.

Membrane parameters characteristic for the study of electrolyte solutions across microporous membranes such as salt permeability, ion transport numbers and membrane electrical resistance have been determined for a ceramic microfiltration membrane by measuring salt diffusion, membrane potential and impedance spectroscopy (IS), respectively. In order to see the effect of ion charge and concentrat...

This work presents the transport behaviour of carrier gases with inorganic ceramic membrane used for environmental gas separations at 289K and 0.01-1 bar. The gases tested include: Helium (He), Nitrogen (N2) Carbon dioxide (CO2) and Argon (Ar). The Knudsen ideal selectivity ratio of 0.95, 0.3 and 0.79 for Ar/CO2, He/CO2 and N2/CO2 gas respectively was slightly higher than the theoretical select...

The design of ceramic chemical microreactor for the production of hydrogen needed in portable polymer-electrolyte membrane (PEM) fuel cells is presented. The microreactor was developed for the steam reforming of liquid fuels with water into hydrogen. The complex three-dimensional ceramic structure of the microreactor includes evaporator(s), mixer(s), reformer and combustor. Low-temperature co-f...

Permporometry as well as nitrogen adsorption-desorption techniques have been applied to study the pore size distribution in y-alumina membranes with a pore radius ranging from about 2 nm to 10 nm. The permporometry technique measures the active pores only, while nitrogen adsorption-desorption measures the active as well as the passive pores. The pore size distribution in the porous ceramic memb...

Ceramic−carbonate dual-phase membranes have attracted a lot of attention because of the emission of CO2 and environmental problems. In this study, a dense SrFe0.8Nb0.2O3−δ−carbonate dual-phase multichannel hollow fiber membrane has been successfully prepared via a phase inversion−sintering technique and impregnation. The morphology, crystal structure, phase stability, breaking load, and CO2 per...