Colorimetric assay for a fast parallel screening of NOx storage
SCIE
SCOPUS
- Title
- Colorimetric assay for a fast parallel screening of NOx storage
- Authors
- Park, JH; Han, MS; Park, SJ; Kim, DH; Nam, IS; Yeo, GK; Kil, JK; Youn, YK
- Date Issued
- 2006-07-25
- Publisher
- ACADEMIC PRESS INC ELSEVIER SCIENCE
- Abstract
- A fast parallel method for determining the capacity of an automotive catalyst to trap and especially store NOx has been established. A three-step approach, including parallel adsorption of NO onto the catalyst samples, water extraction of trapped NOx in the form of NO2- and NO3- in an aqueous solution, and colorimetric assay based on the sensitive and dramatic color change from colorless to deep red of the organic dye through the Griess diazotation reaction has been performed sequentially to give a fast parallel and quantitative evaluation of the amount of NOx trapped over promising automotive catalysts. The results correlate well with those obtained by means of traditional, time-consuming techniques, such as temperature-programmed desorption. (c) 2006 Elsevier Inc. All rights reserved.
- Keywords
- colorimetric assay; NOx storage-reduction catalyst; naked eye sensing; nitrite sensor; NITROGEN-OXIDES; CATALYSTS; STEPS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/23899
- DOI
- 10.1016/j.jcat.2006.04.037
- ISSN
- 0021-9517
- Article Type
- Article
- Citation
- JOURNAL OF CATALYSIS, vol. 241, no. 2, page. 470 - 474, 2006-07-25
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.