Storage stabilities of a petroleum‐derived jet fuel (JP‐5), manufactured by the Chinese Petroleum Corporation in Taiwan, were studied. Fuel degradation was monitored in the presence of added specific heteroatomic (O, N, S) and unsaturated compounds, copper, iron and aluminum powders and mixtures of some of these at room temperature and 80°C. A mechanism is suggested for the sediment formation with the sulfur compounds. The extent of light scattering and of metal drawn into JP‐5 from added metal powder measured by ICP‐AES are correlated with the extent of deposit formation in degradation of the fuel. Metal promotes deterioration of JP‐5, because of metal complex formation.
ChemInform Abstract The synthetic dicopper(I) oxygen carrier (I), prepared by a literature method, serves as an active-site model of hemocyanin. Its surface-enhanced Raman scattering spectra (SERS) and cyclic voltammograms are obtained. Its reaction with oxygen in absolute EtOH gives a solid with the formula (II). Oxyhemocyanin from Taiwan snails contains peroxo dioxygen (SERS evidence). Cyclic voltammetric studies of (II) indicate the existence of Cu(II)-O2-Cu(II) in the initial stages of oxygenation. The CO adducts of (I) and hemocyanin are also studied. The affinity and effect of CO binding to the model and the protein are smaller than those of O2 binding.
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