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          Institute: Fritz-Haber-Institut     Collection: Inorganic Chemistry     Display Documents



  history
ID: 394409.1, Fritz-Haber-Institut / Inorganic Chemistry
In Situ Determination of Hydrogen Inside a Catalytic Reactor Using Prompt γ [Gamma] Activation Analysis
Authors:Revay, Zsolt; Belgya, Tamas; Szentmiklosi, Laszlo; Kis, Zoltan; Wootsch, Attila; Teschner, Detre; Swoboda, Manfred; Schlögl, Robert; Borsodi, Janos; Zepernick, Roger
Language:English
Research Context:Catalytic Hydrogenation
Date of Publication (YYYY-MM-DD):2008-08-01
Title of Journal:Analytical Chemistry
Journal Abbrev.:Anal. Chem.
Volume:80
Issue / Number:15
Start Page:6066
End Page:6071
Copyright:Copyright by 2008 American Chemical Society
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:Prompt γ activation analysis (PGAA) has been further developed to analyze reacting components inside a chemical reactor. The new method, in situ PGAA, was used to determine the hydrogen-to-palladium molar ratio under various conditions of palladium-catalyzed alkyne hydrogenation. The H/Pd molar ratio was successfully measured in the range of 0.1−1.0 in an ~2g catalytic reactor containing a few milligrams of palladium catalyst. The amount of hydrogen was only a few tens of micrograms, and the detection limit was ~5 μg, i.e., at ppm level compared to the whole reactor. The description of the device, methodological developments, a feasibility study, and results of a series of catalytic measurements are presented.
Free Keywords:Heterogeneous catalysis; In situ Prompt Gamma Activation Analysis, Hydrogen
Last Change of the Resource (YYYY-MM-DD):2008-06-01
External Publication Status:published
Document Type:Article
Communicated by:Robert Schlögl
Affiliations:Fritz-Haber-Institut/Inorganic Chemistry/Inorganic Chemistry
Fritz-Haber-Institut/Inorganic Chemistry/Surface Analysis
External Affiliations:Institute of Isotopes, Hung. Acad. Sci., POB 77, Budapest, H-1525, Hungary
BESTEC GmbH, Berlin, D-12489, Germany
Identifiers:URL:http://dx.doi.org/10.1021/ac800882k [only subscribers]
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