title: In situ determination of hydrogen inside a catalytic reactor using prompt gamma activation analysis.
abstract: Prompt gamma 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 approximately 2-g 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 approximately 5 microg, 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.
authors.affiliation: Institute of Isotopes, H-1525 Budapest, Hungary. revay@iki.kfki.hu
authors.forename: Zsolt
authors.initials: Z
authors.lastname: Révay
authors.forename: Tamás
authors.initials: T
authors.lastname: Belgya
authors.forename: László
authors.initials: L
authors.lastname: Szentmiklósi
authors.forename: Zoltán
authors.initials: Z
authors.lastname: Kis
authors.forename: Attila
authors.initials: A
authors.lastname: Wootsch
authors.forename: Detre
authors.initials: D
authors.lastname: Teschner
authors.forename: Manfred
authors.initials: M
authors.lastname: Swoboda
authors.forename: Robert
authors.initials: R
authors.lastname: Schlögl
authors.forename: János
authors.initials: J
authors.lastname: Borsodi
authors.forename: Roger
authors.initials: R
authors.lastname: Zepernick