US EPA

1614364 

Journal Article 

Stage-II-screening device for testing of heterogeneous catalysts in gas phase reactions with Fourier transform infrared analysis 

Bruning, R; Scholz, P; Ondruschka, B 

2005 

1 

Review of Scientific Instruments
ISSN: 0034-6748
EISSN: 1089-7623 

76 

7 

10.1063/1.1946984 

WOS:000230436600038 

The construction of a stage-II-screening device for
heterogeneous catalysts in gas phase reactions under ambient pressure is described. The
concentrations of the reaction products are determined by Fourier transform infrared analysis in
combination with a chemometric interpretation of the obtained spectra. Thus, fast high-precision
product analyses with complete mass balances are feasible, within the limits of accuracy of the
measurements. The device is designed to screen up to 17 catalysts in one testing cycle. It is
possible to determine temperature-conversion-selectivity dependencies as well as long-term
measurements under constant conditions. With the help of the device described, the catalytic
properties of new materials were parallel tested for the oxidative dehydrogenation of
isopropanol. (c) 2005 American Institute of Physics.