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Experimental characterization of the influence of CO on the high-temperature reduction of NO by NH3

✍ Scribed by Johannes Suhlmann; Gerd Rotzoll

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
613 KB
Volume
72
Category
Article
ISSN
0016-2361

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✦ Synopsis

The reaction system NO-NH,-O,-CO was investigated in a tubular flow reactor. The dependence of the fractional conversions of NO, NH, and CO was measured as a function of residence time, temperature, initial NHJNO molar ratio and concentrations of CO and Oz. Addition of CO promotes the reaction and shifts the temperature window by about 1OOK to lower temperatures. NO conversions are somewhat lower than in the NO-NH,-0, system and decrease with excess CO as well as 0,. The reason for these effects is the chain-branching occurring with the oxidation of CO, which leads to a faster overall reaction but also enhances oxidation of NH,.

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