The permeability of gases and light hydrocarbons through new polymeric composite membranes based on poly (1-trimethylsilylpropyne)

• Published in: Separation and purification technology Vol. 57; no. 3; pp. 435 - 439
• Main Authors: Syrtsova, D.A., Borisevich, O.B., Shkrebko, O.A., Teplyakov, V.V., Grinshpan, D.D., Khotimskii, V.S., Roizard, D.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 15.11.2007; Elsevier Science; Elsevier
• Subjects: Chemical and Process Engineering; Engineering Sciences; Hydrocarbons; Poly (1-trimethylsilylpropyne); Polymeric composite membrane; Hydrocarbons; Poly (1-trimethylsilylpropyne); Polymeric composite membrane
• ISSN: 1383-5866; 1873-3794
• DOI: 10.1016/j.seppur.2006.04.013

The flat sheet composite membranes with selective layer made from poly (1-trimethylsilylpropyne) (PTMSP) based on TaCl 5/TIBA and NbCl 5 were developed and studied. The structure of composite membranes was investigated by scanning electronic microscopy (SEM). It was found that non-defected PTMSP layer is achieved on polyacrylonitrile (PAN) support (the effective thickness of selective layer is 1–7 μm). The permeability of membrane in relation to single gases (O 2, N 2, CO 2, H 2) and C 1–C 4 hydrocarbons were measured by differential GC permeability method. It is shown that selectivity of homogenous PTMSP films of simple gases is realized for composite membrane. High separation properties for hydrocarbons α (propane/methane) ≈ 5, α ( i-butane/methane) ≈ 11.5 at high flux of components through membrane are demonstrated.