Details

Autor(en) / Beteiligte

• Shiflett, Mark B.
• Foley, Henry C.

Titel

Ultrasonic Deposition of High-Selectivity Nanoporous Carbon Membranes

Ist Teil von

• Science (American Association for the Advancement of Science), 1999-09, Vol.285 (5435), p.1902-1905

Ort / Verlag

Washington, DC: American Society for the Advancement of Science

Erscheinungsjahr

1999

Quelle

Science (periodical)

Beschreibungen/Notizen

• Ultrasonic deposition creates a thin film of polymer on a tubular, macroporous, stainless steel support. Using polyfurfuryl alcohol as the nanoporous carbon precursor and a pyrolysis temperature of 723 kelvin, a membrane was prepared with the following permeances, measured in moles per square meter per Pascal per second: nitrogen, 1.8 × 10$^{-12}$; oxygen, 5.6 × 10$^{-11}$; helium, 3.3 × 10$^{-10}$; and hydrogen, 6.1 × 10$^{-10}$. The ideal separation factors as compared to that for nitrogen are 30:1, 178:1, and 331:1 for oxygen, helium, and hydrogen, respectively.