Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 12, 2024

Abstract Zeolites, with their well‐defined pore sizes and outstanding stability, are regarded as the quintessential material for precise molecular separation tasks. However, leap from easily produced zeolite powders to synthesizing free‐standing membranes, which can fully leverage ordered porosity, presents substantial technical hurdles. Addressing this challenge, study introduces polymers of intrinsic microporosity (PIM‐1) adhesives through a wrapping‐compression method facile fabrication high‐performance (FAU) “particle board” membranes. The 3D tomogram reconstruction focused ion beam‐scanning electron microscope images reveals membranes exhibit hierarchical porous structures. non‐interconnecting macropores between particles facilitate rapid H 2 permeation, zeolites’ micropores sieve gas molecules. optimized FAU@PIM‐1 membrane hierarchically structures demonstrated hydrogen permeance (2240 GPU) alongside /CH 4 selectivity (31.68) mixed maintained performance level under pressure ranges 1.2 4.0 bar over protracted operational periods (up 3200 h). Meanwhile, EMT MFI‐type zeolites have also been successfully applied validate versatility method, demonstrating its widespread potential various

Язык: Английский