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Investigation of the Heterogeneous Decomposition of Ammonia in an Inverted, Stagnation-point Flow Reactor  

Hwang, Jang Y. (LG Chemical Research Park)
Anderson, Tim (University of Florida, Department of Chemical Engineering)
Publication Information
Korean Chemical Engineering Research / v.47, no.3, 2009 , pp. 287-291 More about this Journal
Abstract
The heterogeneous decomposition of ammonia on a quartz surface in an inverted, stagnation-point flow reactor was investigated using a measurement reactor and a numerical model of the reactor. In the experiments, 8 mole% of ammonia in nitrogen was used and the temperature of an electric heater was set in the range $300{\sim}900^{\circ}C$ to heat the quartz surface where the decomposition took place. Gas temperatures and ammonia concentrations in the reactor obtained using in situ Raman spectroscopy were analyzed with the numerical model and it was revealed that, depending on the heater temperature, the temperature of the quartz surface was estimated to be in the range $235{\sim}619^{\circ}C$ and the activation energy of the decomposition on the surface was in the range 10.9~15.8 kcal/mol.
Keywords
Ammonia; in situ Raman Spectroscopy; Reactor Modeling; Surface Reaction;
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