Silver(I) N–heterocyclic carbene complex encapsulated in cellulose acetate membranes for hydrogen gas purification. Issue 9 (22nd September 2022)

• Record Type: Journal Article
• Authors: Nayak, Vignesh; Sherugar, Prajwal; Padaki, Mahesh; Geetha, B. M.; Budagumpi, Srinivasa
• Is Part Of: Journal of coordination chemistry. Volume 75:Issue 9/10(2022)
• Page Start: 1159
• Page End: 1168
• Publication Date: 2022-09-22
• Subjects: Hydrogen purification -- N-Heterocyclic carbene -- Silver(I) NHC complex -- Supramolecular chemistry -- X-ray diffraction; Coordination compounds -- Periodicals; 541.2242
• DOI: 10.1080/00958972.2022.2109150
• Languages: English
• ISSNs: 0095-8972

Abstract

Abstract: Coinage metal complexes bearing N –heterocyclic carbene (NHC) ligands are important in discovery of new metal-based drugs, however, their usage in homogenous and heterogeneous catalysis, photocatalysis, gas purification, etc., are scarce. In this report, the performance of a silver(I)–NHC encapsulated membrane for hydrogen gas purification is reported. Gas purification materials or membranes play a crucial role in the manufacture of pure hydrogen gas, a green fuel, at industrial levels. The purification of hydrogen gas has been carried out conventionally following solid-state diffusion method using silver-palladium metal alloy-based membranes. Though the efficiency of these membranes is acceptable, their cost of preparation is economically nonviable, and hence a new method has been developed to purify hydrogen gas using silver(I)-NHC complex encapsulated cellulose acetate membranes. The complex encapsulated membranes possess promising elongation strength and tensile modulus. The optimum composite membrane showed good separation efficiency with ideal selectivity of 2.0, 65 and 32 for H2 /CO2, H2 /CH4 and CO2 /CH4, respectively. Graphical Abstract: UF0001