Enhanced Propylene/Propane Separation via Aniline-Decorated ZIF-8 Membrane: Lattice Rigidity Adjustment and Adsorption Site Introduction.

Metal-organic framework (MOF)-based membranes excel in molecular separation, attracting significant research interest. The crystallographic microstructure and selective adsorption capacity of MOFs closely correlate with their gas separation performance. Here, aniline was added to the ZIF-8 synthesis in varying concentrations.

Polyimide/Ionic Liquids Hybrid Membranes with NH-Philic Channels for Ammonia-Based CO Separation Processes.

An efficient separation technology involving ammonia (NH) and carbon dioxide (CO) is of great importance for achieving low-carbon economy, environmental protection, and resource utilization. However, directly separating NH and CO for ammonia-based CO capture processes is still a great challenge. Herein, we propose a new strategy for selective separation of NH and CO by functional hybrid membranes that integrate polyimide (PI) and ionic liquids (ILs).

Tuning the Phase Composition of Metal-Organic Framework Membranes for Helium Separation through Incorporation of Fullerenes.

Metal-organic framework (MOF) membranes have attracted significant research interest in gas separation, but efficient helium (He) separation remains a challenge due to the weak polarizability of He and the intrinsic pore size flexibility of MOFs. Herein, incorporated fullerenes (C and C) were used to tune the crystallographic phase composition of ZIF-8 membranes, thus creating small and fixed apertures for selective He permeation. The fullerene-modified ZIF-8 (C@ZIF-8 and C@ZIF-8) membranes contain about 20% of the rigid-lattice ZIF-8_I-43m phase and have been prepared as 200-350 nm thick supported layers through electrochemical synthesis.

Highly Selective Oxygen/Nitrogen Separation Membrane Engineered Using a Porphyrin-Based Oxygen Carrier.

Air separation is very important from the viewpoint of the economic and environmental advantages. In this work, defect-free facilitated transport membranes based on poly(amide-12-b-ethylene oxide) (Pebax-2533) and tetra(-methoxylphenyl)porphyrin cobalt chloride (T(-OCH)PPCoCl) were fabricated in systematically varied compositions for O/N separation. T(-OCH)PPCoCl was introduced as carriers that selectively and reversibly interacted with O and facilitated O transport in the membrane.

Functionalized ionic liquid membranes for CO separation.

It is imperative to develop efficient, reversible and economic technologies for separating CO2 which mainly comes from flue gas, natural gas and syngas. Membranes based on functionalized ionic liquids (ILs) have attracted much attention from researchers in recent years, and have been considered as a very promising technology. This feature article focuses on the research progress in CO2 separation using functionalized IL membranes.

Downregulation of heat shock factor 4 transcription activity via MAPKinase phosphorylation at Serine 299.

Dysfunction of HSF4 is associated with congenital cataracts. HSF4 transcription activity is turned on and regulated by phosphorylation during early postnatal lens development. Our previous data suggested that mutation HSF4b/S299A can upregulate HSF4 transcription activity in vitro, but the biological significance of posttranslational modification on HSF4/S299 during lens development remains unclear.

A Novel Cx50 Insert Mutation from a Chinese Congenital Cataract Family Impairs Its Cellular Membrane Localization and Function.

Mutations in GJA8 are associated with hereditary autosomal dominant and recessive cataract formation. In this study, a novel insert mutation in GJA8 was identified in a Chinese congenital cataract family and cosegregated with the disease in this pedigree. This insert mutation introduces five additional amino acid residues YAVHY after histidine at the 95 site (p.

Heat shock factor 4 regulates the expression of HSP25 and alpha B-crystallin by associating with DEXD/H-box RNA helicase UAP56.

Heat shock factor 4 controls the transcription of small heat shock proteins (e.g., HSP25, alpha B-cyrstallin, and r-crystallin), that play important roles in modulating lens proteostasis.