Matrix reactions of copper atoms and ozone molecules. Infrared spectrum of CuO
摘要:
The matrix reactions of copper atoms with ozone have been studied by infrared spectroscopy. Two products were found in the initial deposit: CuO3, which has a strong absorption at 802.3 cm−1, and CuO, which has its main feature, corresponding to the 63Cu16O isotopic species, at 628.0 cm−1 in solid argon. Copper atom reactions with oxygen-18-enriched ozone samples were used to obtain species identifications. The CuO3 absorption was very similar in frequency and isotopic splitting behavior to alkali and alkaline earth metal ozonide species previously studied in matrices. The CuO frequency is in good agreement with gas phase measurements which put the ground state CuO vibrational fundamental at 631.3 cm−1. Temperature cycling of the Cu–O3 matrices leads to CuO4 formation by the secondary reaction of CuO with unreacted ozone.
Mechanism of the powder reaction between CuSO4(s) and PbO (α and β): A thermoanalytical and mass spectrometric study
作者:Emilia García-Clavel、Isabel Tejedor Tejedor、Hermógenes G. Sanz
DOI:10.1016/0022-4596(81)90384-4
日期:1981.11
Thermoanalyticalstudies and isotopic analysis of oxygen have been used to establish the actual mechanism of the exchange reaction (the reactants are fine powders). Whether SO3 is or is not involved in the reaction process depends on the crystalline form of PbO, and in the case of α-PbO on the type of heating. Oxygen isotope analysis, carried out on reaction products when PbO is enriched in 18O and