A 2D Graphitic‐Polytriaminopyrimidine (g‐PTAP)/Poly(ether‐block‐amide) Mixed Matrix Membrane for CO₂ Separation

Abstract

Poly(ether‐block‐amide)/g‐PTAP mixed matrix membranes (MMMs) were developed by incorporating different wt.% (1–10%) of a novel 2D g‐PTAP nanofiller and its effects on membrane structure and gas permeability were studied. The novel 2D material g‐PTAP was synthesized and characterized by various analytical techniques including field‐emission scanning electron microscopy (FESEM), X‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and Raman spectroscopy. The fabricated MMMs were investigated to study the interaction and compatibility between Pebax and g‐PTAP. The MMMs showed an effective integration of g‐PTAP nanofiller into the Pebax matrix without affecting its thermal stability. Gas permeation experiments with MMMs showed improved CO2 permeability and selectivity (CO2/N2) upon incorporation of g‐PTAP in the Pebax polymer matrix. The maximum CO2 permeability enhancement from 82.3 to 154.6 Barrer with highest CO2/N2 selectivity from 49.5 to 83.5 were found with 2.5 wt.% of nanofiller compared to neat Pebax membranes.

A Review on SAPO‐34 Zeolite Materials for CO2 Capture and Conversion

“…Finally, the materials of the adsorbents must be economically viable and readily available. [103] Numerous adsorbents have been reported for CO 2 capture, including zeolites, [93,95,104] ceramics, [105,106] carbonates, [107,108] metal and metal oxides, [24,25] carbonaceous materials, [100,109,110] amines, hydroxides, [111,112] polymers, [113,114] ionic liquids, [115] covalent organic frameworks, [116] and metal-organic frameworks (MOFs). [117][118][119][120][121][122][123][124][125][126][127] Acid-base neutralization reactions also play a key role in capturing CO 2 .…”

Polydimethylsiloxane/Magnesium Oxide Nanosheet Mixed Matrix Membrane for CO2 Separation Application

“…Similar observations were also made by Feijani et al [ 23 ]. Furthermore, Asim et al [ 24 ] incorporated a range of 1 wt.% to 10 wt.% of 2D graphitic-Polytriaminopyrimidine (g-PTAP) into Pebax-1657 membrane. The optimum 2D g-PTAP loading they obtained based on the gas separation performance was at 2.5 wt.%, whereby they observed a simultaneous improvement of CO 2 permeability from 82.3 to 154.6 barrier with CO 2 /N 2 selectivity improved from 549.5 to 83.5.…”