Properties and separation performance of Ge-ZSM-5 membranes

Transient permeation of butanes through ZSM‐5 and ZSM‐11 zeolite membranes

“…The zeolite structure and film morphology of similarly made membranes were previously determined by XRD and SEM analysis (Tuan et al, 1999(Tuan et al, , 2000b. Chemical analyses of the metal content of similarly made membranes in our laboratory indicated that the Si/(substitution metal) ratio of the membrane was approximately twice that of the parent gel (Li et al, 2003). The chemical composition of similar membranes was also previously measured as a function of thickness (Poshusta et al, 2000).…”

Performance of PDMS membranes in pervaporation: Effect of silicalite fillers and comparison with SBS membranes

“…This elastomer, containing a siloxane (Si-O) backbone substituted with methyl groups, is widely known also in gas separation and solvent resistant nanofiltration, because of its high chemical stability and highly hydrophobic character [13]. Additionally, inorganic membranes based on hydrophobic zeolites were tested by different authors and showed superior membrane performance characteristics [14][15][16][17]. Hence, the necessity of introducing fillers such as zeolites into the polymeric network seemed to be interesting and became the aim of scientific investigation [18,19].…”

Extraction‐Fermentation Hybrid (Extractive Fermentation)

“…In addition to polymeric membranes, inorganic zeolite materials, such as silicalite and Ge-ZSM-5, have also been studied as hydrophobic membranes in pervaporation applications (Sano et al ., 1994;Li et al ., 2003). These inorganic materials are usually supported by a solid frame, such as stainless steel, in order to act as a membrane.…”