The gas permeation behavior in the single crystal of syndiotactic polystyrene (s-PS) S-I form was investigated detail, comparison to that s-PS ɛ form. exhibits high separation factors for CO2/N2 (∼180) and CO2/CH4 (∼500), while preserving its CO2 permeability 8000 Barrers; a trade-off between selectivity broken through. mechanism effective efficient transport examined relation cavity structure ...

To improve the CO2/N2 separation performance, mixed-matrix carbon molecular sieve membranes (mixed-matrix CMSMs) were fabricated and tested. Two carbon-based fillers, graphene oxide (GO) activated (YP-50F), separately incorporated into two polymer precursors (Matrimid® 5218 ODPA-TMPDA), resulting CMSMs demonstrated improved CO2 permeability. The improvement afforded by YP-50F was more substanti...

the purpose of this work was to study the effect of various permeation enhancers on the permeation of salbutamol sulphate (ss) buccal patches through buccal mucosa in order to improve the bioavailability by avoiding the first pass metabolism in the liver and possibly in the gut wall and also achieve a better therapeutic effect. the influence of various permeation enhancers, such as dimethyl sul...

Dual-phase molten salt-ceramic membranes show high permselectivity for CO2 when carbonate is supported in a porous oxygen-ion and/or electron conductor. In this arrangement, the support likely contributes to permeation. Thus, if one understand and ultimately design membranes, it also important perform experiments with an inert where permeation relies upon properties alone. Here, nominally mater...

The Oxidative Coupling of Methane (OCM) to ethylene is a promising alternative for the oil based industry. In this process, beside the valuable product ethylene, other by-products are produced. Hence the gas stream has to be refined further. The process is not applied in the industry yet, because of high separation costs. This article focuses particular on the CO2 purification of the OCM produc...

The suppression of CO2-induced plasticization in polyimide membranes at supercritical conditions up to 120 bar is investigated. Three approaches (polymer blending, thermal treatments and chemical crosslinking) known from relatively low-pressure applications are applied their effectiveness suppress membrane high CO2 pressures under systematically identified. sorption measurements reveal that esp...

Graphene Aerogels In article number 2100083 by Ben Bin Xu, Eileen Hao Yu, Chao Gao, Terence Xiaoteng Liu, and coworkers, an advanced structured graphene aerogel–carbon paper hybrid gas diffusion electrode reaction cell offers directional of molecules onto the catalyst bed. The described porous bilayer configuration enables unique CO2 mass transfer features with enhanced Faradaic efficiency carb...