Palladium Membrane Applications in Hydrogen Energy and Hydrogen-Related Processes

Polymers, Journal Year: 2025, Volume and Issue: 17(6), P. 743 - 743

Published: March 12, 2025

In recent years, increased attention has been paid to environmental issues and, in connection with this, the development of hydrogen energy. turn, this requires large-scale production ultra pure hydrogen. Currently, most is obtained by converting natural gas and coal. regard, issue deep purification for use fuel cells very relevant. The also necessary some other areas, including microelectronics. Only palladium membranes can provide required degree purification. addition, membrane catalysis relevant widely demanded processes hydrogenation dehydrogenation, which reactors are used. This process successfully used single-stage high-purity Polymeric palladium-containing purify remove various pollutants from water, organochlorine products, nitrates, a number substances.

Language: Английский

---

Rigid and flexible coupled micropore membranes enabling ultra‐efficient anion separation

AIChE Journal, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 28, 2025

Abstract The swift advancement of monovalent anion perm‐selective membranes (MAPMs) presents a promising and sustainable approach for separation. However, their progress remains predominantly based on microphase‐separated characterized by wide, swelling ion‐selective channels. In this study, the rigidity flexibility coupled concept was employed to engineer rigidly confined channels within MAPMs facilitate rigid segments self‐assemble into micropores (<0.8 nm), with dimensions precisely modulated flexible segments. Under electrodialysis conditions, these demonstrate an order‐of‐magnitude improvement in selectivity compared Neosepta® ACS commercial (special separation), slight increase permeation flux anions. simulation results confirm that difference confinement various anions, driven electrostatic interactions micropores, is responsible exceptional monovalent/bivalent selectivity. Overall, study provides alternative strategy construct efficient

Language: Английский

---

Designing multilayer interlocked architectures with vertical LDH nanosheets in ZIF-67 composite membranes for upgrading CO2 separation

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161702 - 161702

Published: March 1, 2025

Language: Английский

---

Enhanced hydrogen separation with ZIF-8/α-Al2O3 membranes synthesized via PDA/PEI-chelated zinc ions

Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 163117 - 163117

Published: March 1, 2025

Language: Английский

---

Sulfur- and Nitrogen-Incorporated Phenothiazine-Based Porous Organic Polymer: Selective and Efficient CO₂ Capture and Evaluation for Vacuum Swing Adsorption

ACS Applied Polymer Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 7, 2025

Language: Английский

---

Porphyrinic metal–organic frameworks as separation membranes: from synthesis to advanced applications

Materials Horizons, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

TCPP MOFs, characterized by diverse nanostructured morphologies, can be integrated into various membranes, performing advanced separation applications.

Language: Английский

---

Eggshell-inspired heterogeneous bilayer paper window with selective gas permeability for preserving fresh produce

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162407 - 162407

Published: April 1, 2025

Language: Английский

---

Covalent Organic Framework (COF)—Topical Game Changer for Polymeric Nanocomposites

Polymer-Plastics Technology and Materials, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 32

Published: April 10, 2025

Language: Английский

---

Porous Composite Polymers Composed of Polyethyleneimine and Cyclodextrins: Synthesis and Application as Adsorbents for an Organic Compound

Separations, Journal Year: 2025, Volume and Issue: 12(4), P. 94 - 94

Published: April 10, 2025

Polyethyleneimine-based porous composites have been prepared by ring-opening polymerization of 2,2-bishydroxymethylbutanol-tris[3-(1-aziridinyl)propionate] (3AZ), a tri-aziridine compound, in water, the presence cyclodextrins (CDs), i.e., α-CD, γ-CD, methyl-β-cyclodextrin (Me-β-CD), monoacetyl-β-cyclodextrin (Ac-β-CD), and hydroxypropyl-β-cyclodextrin (HP-β-CD). The corresponding 3AZ-CD polymer were successfully obtained most cases under wide range CD concentrations, 5–20 wt%, reaction temperatures, 20–60 °C. system Ac-β-CD preferentially yielded gels. composed connected particles with sizes order 10−9 m. particle decreased an increase concentration. Young’s moduli tended to bulk density. Me-β-CD HP-β-CD effectively adsorbed phenolphthalein solution. adsorption value increased increasing content rose more than 600 mg/g composite.

Language: Английский

---

Incorporation of Carbocyclic Moieties into Polymer Structure: A Powerful Way to Polymers with Increased Microporosity

Polymers, Journal Year: 2025, Volume and Issue: 17(8), P. 1100 - 1100

Published: April 18, 2025

Microporous soluble polymers attract great attention as materials for membrane gas separation, storage and transportation, sorbents, supports catalysts, matrices mixed matrix membranes. The key problems in the development of this area polymer chemistry include search methods controlling porous structure parameters ensuring stability their properties over time. In connection, a fruitful approach is to introduce bulky rigid, often framework carbocyclic moieties into backbones side chains. This review discusses effect on transport properties, BET surface area, FFV glassy polymers, such polyacetylenes, polynorbornenes, polyimides, ladder partially polymers. majority cases, incorporation makes it possible controllably increase these three parameters. Carbocyclic can also improve CO2/gas separation selectivity, which displayed polynorbornenes.

Language: Английский

---