Rapid-Scan Operando Infrared Spectroscopy

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Title: Rapid-Scan Operando Infrared Spectroscopy
Authors: Davó-Quiñonero, Arantxa | Bueno López, Agustín | Lozano Castelló, Dolores | McCue, Alan J. | Anderson, James A.
Research Group/s: Materiales Carbonosos y Medio Ambiente
Center, Department or Service: Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales
Keywords: Heterogeneous catalysis | IR spectroscopy | Operando | Rapid scan | Reaction mechanisms
Knowledge Area: Química Inorgánica
Issue Date: 7-Jun-2016
Publisher: Wiley-VCH Verlag GmbH & Co. KGaA
Citation: ChemCatChem. 2016, 8(11): 1905-1908. doi:10.1002/cctc.201600302
Abstract: Novel methodology, referred to as rapid-scan operando, has been demonstrated to be a highly powerful tool for studying reaction mechanisms in heterogeneous catalysis, because it combines rapid scan for IR monitoring in the milliseconds time frame and operando methodology. As proof of concept, the NOx–CO and NOx–H2 reactions were studied as model catalyzed reactions with practical interest for removal of NOx in diesel exhausts. Rapid-scan operando experiments confirmed state-of-the-art knowledge concerning the reaction mechanisms and, more importantly, allowed us to elucidate, for the first time, the different roles of the surface hydroxy groups depending on the reductant used (CO or H2). Moreover, this new tool was used to distinguish the behavior of carbonates and nitrites under reaction conditions that could not be monitored by conventional IR spectroscopy approaches owing to overlap of their absorbance bands.
Sponsor: Financial support from Generalitat Valenciana (Project PROMETEOII/2014/010 and grant BEST/2014/250), Spanish Ministry of Economy and Competitiveness (Projects CTQ2012–30703 and MAT2014–61992-EXP, and grant PRX14/00249), and the European Union (FEDER funding).
URI: http://hdl.handle.net/10045/62470
ISSN: 1867-3880 (Print) | 1867-3899 (Online)
DOI: 10.1002/cctc.201600302
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
Peer Review: si
Publisher version: http://dx.doi.org/10.1002/cctc.201600302
Appears in Collections:INV - MCMA - Artículos de Revistas

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