Catalytic Methane Combustion on a Pt Gauze: Laser‐Induced Fluorescence Spectroscopy, Species Profiles, and Simulations. Issue 11 (November 2016)

• Record Type: Journal Article
• Authors: Schwarz, Heiner; Dong, Ying; Horn, Raimund
• Other Names: Hinrichsen Kai‐Olaf sponsoringEditor.; Klemm Elias sponsoringEditor.
• Is Part Of: Chemical engineering & technology. Volume 39:Issue 11(2016:Nov.)
• Page Start: 2011
• Page End: 2019
• Publication Date: 2016-11
• Subjects: Catalytic gauze reactor -- Laser‐induced fluorescence -- Profile measurements, Reactor modeling -- Surface and gas reactions; Chemical engineering -- Periodicals; Chemical processes -- Periodicals; 660.05
• DOI: 10.1002/ceat.201600286
• Languages: English
• ISSNs: 0930-7516

Abstract

Abstract: Profile measurements in a catalytic gauze reactor are conducted for catalytically assisted methane combustion over platinum. The reactor combines a capillary sampling technique with a novel fiber‐optic laser‐induced fluorescence spectroscopy method for the detection and quantification of gas phase OH radicals serving as indicator species for gas phase reactions. Experimental profiles are compared with three‐dimensional numerical reactor simulations including flow, mass transport, heat transport, and microkinetic models for both surface and gas phase chemistry. The results provide insights into the interaction of chemistry and transport upstream of, at, and downstream of the catalytic gauze, and the interaction of surface and gas phase reactions by exchange of heat and radicals released from the catalyst surface. Abstract : The investigation of oxidation reactions on Pt/Rh gauze catalysts is challenging due to their high reaction rate and complexity. Concentration profiles of OH radicals, which represent an indicator species for these reactions, are measured for the catalytic combustion of methane in a single Pt‐gauze reactor. CFD simulations of the profiles show that the reaction proceeds partly at the Pt surface and partly in the gas phase.