Kinetics of reaction between nitrogen mono-oxide and carbon mono-oxide over palladium–alumina and ruthenium–alumina catalysts

Electrochemical Promotion of the Catalytic Reduction of NO by CO on Palladium

“…8). This value is lower than values of 85 to 91 kJ/mol reported in the literature (28,29,31). A limitation by external mass transfer was discarded, since the rate was measured to be constant, within experimental error, when the flow rate was varied by a factor of 3.…”

“…Butler (28,29,31) with the exception of values of 58 kJ/mol (T < 470 K) and 140 kJ/mol (T > 470 K) reported by Bogdanchikova et al (32). A reaction scheme involving the dissociative adsorption of NO is proposed by several authors (30,32) while a bimolecular scheme, where NO and CO react without prior dissociation of NO, is proposed by others (16,29,31).…”

“…The unimolecular mechanism (e.g., (30,32)) involves the dissociation of NO to form adsorbed atomic nitrogen and oxygen, the latter being scavenged by CO, while in the bimolecular scheme (e.g., (16,29,31)) CO and NO react prior to the dissociation of NO:…”

The CO+NO Reaction over Pd: A Combined Study Using Single-Crystal, Planar-Model-Supported, and High-Surface-Area Pd/Al2O3Catalysts

“…The CO + NO reaction has been studied over a variety of transition and noble metal catalysts (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12). Since the introduction in the late 1970s of the three-way catalytic converter (for the simultaneous reduction of NO x species and oxidation of CO and excess hydrocarbons) into the emission control systems of automobiles in the United States, there have been significant efforts to elucidate the fundamental reaction pathways and catalytic characteristics that account for the success of these systems (11)(12)(13).…”

Interaction and reactivity of nitric oxide and carbon monoxide on ruthenium surfaces

“…The second investigation by J, Butler and D. Davis (11) studied the reaction between 250-350°C using an alumina supported 0.5% w/tf ruthenium catalyst. They also fit their data to a power rate law of the following form: Rate^o = 6.6x10^ exp(-19.7 ± 3.6 kcal/mole/RT) P°Q P°Q (5) Their reaction chamber was a closed system and the gas composition was monitored mass spectrometrically after passing through a capillary-type leak.…”