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  Application of a new color detection based method for the fast parallel screening of DeNOχ catalysts

Busch, O. M., Hoffmann, C., Johann, T. R. F., Schmidt, H.-W., Strehlau, W., & Schüth, F. (2002). Application of a new color detection based method for the fast parallel screening of DeNOχ catalysts. Journal of the American Chemical Society, 124(45), 13527-13532. doi:10.1021/ja020629x.

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Busch, O. M.1, Author           
Hoffmann, C.1, Author           
Johann, T. R. F.1, Author           
Schmidt, H.-W.2, Author           
Strehlau, W.3, Author
Schüth, F.1, Author           
Affiliations:
1Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445589              
2Precision Mechanics, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445582              
3hte AG, Heidelberg, Germany, ou_persistent22              

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 Abstract: A new fast parallel detection method for stage I screening of solid catalysts has been developed. This method is based on the color change of organic dyes in the presence of either educts or reaction products in a reaction gas flow. As an example, NO decomposition and NO reduction with propylene under lean or rich conditions were studied. The presence of NO in a gas stream was detected by the color change from colorless to blue- green of filter paper impregnated with an organic dye, 2,2'- azinobis(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS), which was placed in the gas stream after the catalyst bed. The catalyst library was made up of mixed metal oxides, synthesized by impregnation of activated carbon with metal oxide precursor solutions and subsequent combustion of the carbon matrix. Catalytic activity of these metal oxides was compared to platinum on y-alumina as a reference catalyst. The most active compounds were then studied in detail for their DeNO(x) properties in a high precision parallel flow test rig under a stationary and cyclic lean/reach operation. A new promising NOx storage catalyst was discovered.

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Language(s): eng - English
 Dates: 2002-11-13
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 19680
DOI: 10.1021/ja020629x
ISI: 000179122900049
 Degree: -

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Title: Journal of the American Chemical Society
  Alternative Title : J. Am. Chem. Soc.
Source Genre: Journal
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Pages: - Volume / Issue: 124 (45) Sequence Number: - Start / End Page: 13527 - 13532 Identifier: ISSN: 0002-7863