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ERIC Number: EJ838175
Record Type: Journal
Publication Date: 2009-May
Pages: 4
Abstractor: As Provided
Reference Count: 12
ISBN: N/A
ISSN: ISSN-0021-9584
Experiments for the Undergraduate Laboratory that Illustrate the Size-Exclusion Properties of Zeolite Molecular Sieves
Cooke, Jason; Henderson, Eric J.
Journal of Chemical Education, v86 n5 p606-609 May 2009
Experiments are presented that demonstrate the size-exclusion properties of zeolites and reveal the reason for naming zeolites "molecular sieves". If an IR spectrometer is available, the adsorption or exclusion of alcohols of varying sizes from dichloromethane or chloroform solutions can be readily demonstrated by monitoring changes in the intensity of the alcohol OH band in the IR spectra. It is also possible to qualitatively illustrate whether solvents of varying sizes are able to enter the pores of different zeolites by observing the displacement of adsorbed nitrogen gas from within the pores. The volume of evolved gas is considerable and can be measured if desired. (Contains 1 table and 1 figure.)
Division of Chemical Education of the American Chemical Society. Subscription Department, P.O. Box 1267, Bellmawr, NJ 08099-1267. Tel: 800-691-9846; Tel: 856-931-5825; Fax: 856-931-4115; e-mail: jchemed@egpp.com; Web site: http://www.jce.divched.org
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: Teachers
Language: English
Sponsor: N/A
Authoring Institution: N/A