Separation of a C3H6/C2H4 mixture using Pebax® 2533/PEG600 blend membranes

Efficient Propylene/Ethylene Separation in Highly Porous Metal–Organic Frameworks

“…Each Fe 2 M cluster is connected with six different but equivalent L 3− ligands, and each L 3− ligand bridges three Fe 2 M clusters (Figure 1a). The interconnection of the Fe 2 M clusters and L 3− ligands in such a way results in their 3D frameworks, which could be regarded as (3,6)-connected nets from a topological point of view (point symbol: {4•6 2 } 2 {4 2 •6 7 8 6 }). The frameworks contain large volumes which are occupied by disordered guest molecules, as indicated by TGA results (Figure S1).…”

“…The uptakes are obviously lower than those of Fe 2 Mn-L (291.1 and 87.5 cm 3 g −1 ). Zhang et al prepared a blend membrane by doping 15% (mass) polyethylene glycol (PEG600) into the poly(ether-block-amide) (Pe-bax®2533) polymer matrix [6]. For a 1:1 binary C To confirm the separation capacities of the adsorbents for a real binary C 3 H 6 /C 2 H 4 gas, breakthrough experiments were performed for the quartz tubes packed with the adsorbents by using a binary gas of C 3 H 6 /C 2 H 4 (1:9) at room temperature and ambient pressure.…”

“…The uptakes are obviously lower 302 than those of Fe2Mn-L (291.1 and 87.5 cm 3 g −1 ). Zhang et al prepared a blend membrane 303 by doping 15% (mass) polyethylene glycol (PEG600) into the poly(ether-block-amide) 304 (Pebax® 2533) polymer matrix [6]. For a 1:1 binary C3H6/C2H4 gas, the Pebax® 305 2533/PEG600 membrane showed a C3H6 permeability of 273 barrer and a C3H6/C2H4 selec-306 tivity of 4.15 at 293 K and 2 bar, and a C3H6 permeability of 196 barrer and a C3H6/C2H4 307 selectivity of 8.90 at 238 K and 2 bar.…”

“…Nowadays, the separation of C 2 H 4 and C 3 H 6 is commonly accomplished by cryogenic distillation, which is a mature but energy-intensive process. Many works have been reported to develop new materials and technologies to efficiently separate C 2 H 4 and C 3 H 6 [5][6][7][8][9]. Adsorptive separation of C 2 H 4 and C 3 H 6 with porous materials is regarded as a promising alternative [10].…”