In this work, polyhedral oligomeric silsesquioxane (POSS) with two different functional groups, octa(nitrophenyl)silsesquioxane (ONPS) and octa(aminophenyl)silsesquioxane (OAPS), was incorporated polydimethylsiloxane (PDMS), forming composite membranes for furfural recovery via pervaporation process. The addition of POSS had enhanced the hydrophobicity PDMS improved affinity membranes. At same ...

A mathematical model, based on the dusty-gas model extended with surface diffusion, is presented that describes mass transport owing to molecular diffusion and viscous flow, as well as an instantaneous reversible reaction inside a membrane reactor. The reactants are fed to opposite sides of the membrane, considering masstransfer resistances in the gas phase outside the membrane. The Claus react...

Abstract Graphene oxide (GO) membranes have shown great potential in ionic sieving from aqueous solutions. However, it remains challenging for GO to exclude small ions with a large water flux. Herein, organic are confined onto the interlaminations form precisely restricted 2D channel size of 0.71 nm, which presents >99.9% NaCl rejections and high freshwater fluxes via pervaporation method, b...

A packed-bed membrane reactor in a distributor configuration is studied theoretically for the oxidative propane dehydrogenation and compared with fixed-bed reactor. Based on detailed 2D models considering two different heat mass transport scale-up including various reactor-to-particle diameter ratios (D/dP) analyzed respect to performance, transfer hot spot formation. Higher selectivities at lo...

In production of electricity from coal, integrated gasification combined cycle plants typically operate with conventional packed bed reactors for the water-gas shift reaction, and a Selexol process for carbon dioxide removal. Implementation of membrane reactors in place of these two process units provides advantages such as increased carbon monoxide conversion, facilitated CO2 removal/sequestra...