Scalable Pillar[5]arene-Integrated Poly(arylate-amide) Molecular Sieve Membranes to Separate Light Gases was written by Song, Woochul;Park, Jaesung;Dasgupta, Subhadeep;Yao, Chenhao;Maroli, Nikhil;Behera, Harekrushna;Yin, Xinyang;Acharya, Durga P.;Zhang, Xueyi;Doherty, Cara M.;Maiti, Prabal K.;Freeman, Benny D.;Kumar, Manish. And the article was included in Chemistry of Materials in 2022.Formula: C9H3Cl3O3 This article mentions the following:
Mol. sieve membranes and their analogs could potentially transform energy-intensive gas separation processes. However, many such membranes suffer from either limited processability or phys. stability including plasticization of semi-flexible microstructures. Here, we report on a new variation of all-polymer-based mol. sieve membranes that could tackle these specific challenges. These membranes were prepared by the interfacial polymerization of pillar[5]arene, m-phenylenediamine, and trimesoyl chloride to create characteristic poly(arylate-amide) heteropolymer microstructures. Pillar[5]arenes were crosslinked into the films with net weight fractions of up to ~47%, wherein the 4.7 Å cavities of pillar[5]arenes were interconnected with ~2.8 Å apertures. These microstructures provided preferred permeation paths for smaller mols. (He and H2) among the tested light gases (He, H2, CO2, O2, N2, and CH4) and resulted in significant mol. sieving effects with representative pure gas selectivities of 32 (H2/CO2), 150 (CO2/CH4), 4600 (H2/CH4), 13 (O2/N2), and 4.7 (N2/CH4) at 35°C and 10 atm. These separation factors outperform most polymer-based gas separation membranes, while providing membrane features such as thin film barriers, cross-linked polymer backbones, and excellent processability resulting from interfacial polymerization that are critical for large-scale operations. In the experiment, the researchers used many compounds, for example, Trimesoylchloride (cas: 4422-95-1Formula: C9H3Cl3O3).
Trimesoylchloride (cas: 4422-95-1) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators. Alkyl chlorides are versatile building blocks in organic chemistry. While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available.Formula: C9H3Cl3O3
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics