✦ LIBER ✦

Preparation of carbon molecular sieves by propylene pyrolysis over microporous carbons

✍ Scribed by S.K. Verma; P.L. Walker Jr.

Publisher: Elsevier Science
Year: 1992
Tongue: English
Weight: 846 KB
Volume: 30
Category: Article
ISSN: 0008-6223
DOI: 10.1016/0008-6223(92)90003-f

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✦ Synopsis

Modification ofthe pore structure of microporous carbons by depositing carbon from pyrolysis of CJH6 between 973-I I23 K was investigated in regard to development of molecular sieving properties for separation of O2 and Ar. Excellent adsorption kinetics and selectivity for separation of O2 and Ar were achieved by depositing carbon on a substrate carbon that contains pores of a narrow size distribution. Activated carbons showed no useful development of molecular sieving characteristics after carbon deposition. This is att~buted, primarily, to their containing too wide a size dist~bution of micropores.

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