A High-Temperature Fast-Flow-Reactor Kinetics Study of the Reaction AlO + CO2 -> AlO2 + CO. Thermochemical Implications

Article abstract of DOI:10.1021/j100399a046

The title reaction has been studied in a high-temperature fast-flow reactor (HTFFR) at temperatures from 500 to 1300 K.Laser-induced fluorescence was used to monitor relative . k(T) was determined to be (2.5 +/- 1.3) * 10^-14 exp<(400 +/- 280)/T> cm³ molecule^-1 s^-1 (confidence level > 95percent).The reaction probably proceeds via an intermediate complex which preferentially dissociates to the reactants.The negative activation energy implies D(O-AlO) >/= D(O-CO) = 127 kcal mol^-1, which is incompatible with the O-AlO dissociation energy obtained for AlO2 from Al2O3 evaporation-mass spectrometry studies.It is argued that the latter AlO2 may have a different structure from that of the present work.