Publication Date:
1999-09-18
Description:
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 x 10(-12); oxygen, 5.6 x 10(-11); helium, 3.3 x 10(-10); and hydrogen, 6.1 x 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.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shiflett -- Foley -- New York, N.Y. -- Science. 1999 Sep 17;285(5435):1902-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉DuPont Central Research and Development, Experimental Station, Wilmington, DE 19880, USA. Center for Catalytic Science and Technology, Department of Chemical Engineering, University of Delaware, Newark, DE 19716, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10489366" target="_blank"〉PubMed〈/a〉
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
