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ERIC Number: EJ853499
Record Type: Journal
Publication Date: 2009-Sep
Pages: 3
Abstractor: As Provided
Reference Count: 8
ISSN: ISSN-0021-9584
Real-Time Monitoring of Heterogeneous Catalysis with Mass Spectrometry
Young, Mark A.
Journal of Chemical Education, v86 n9 p1082-1084 Sep 2009
Heterogeneous, gas-solid processes constitute an important class of catalytic reactions that play a key role in a variety of applications, such as industrial processing and environmental controls. Heterogeneous catalytic chemistry can be demonstrated in a simple heated flow reactor containing a fragment of the catalytic converter from a vehicular exhaust system. The reaction can be carried out under atmospheric pressure conditions, obviating the need for expensive and cumbersome vacuum equipment. The heterogeneous conversion of small molecules is easily monitored with a quadrupole mass spectrometer (QMS) of moderate mass resolution. While sampling at atmospheric pressure can normally be problematic, self-contained QMS instruments that utilize differential pumping are available and can be incorporated into the flow reactor. Combining these concepts and design ideas we have instituted an experiment for undergraduate chemistry students that illustrates concepts in surface science and catalysis while facilitating exposure to operational aspects of mass spectrometry and real-time monitoring of a process flow stream. (Contains 1 scheme and 2 figures.)
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:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A