Adsorbed species. I. Electron spin resonance of nitrogen heterocyclics adsorbed on magnesium oxide and silica-alumina

Adsorbed species. II. Electron spin resonance study of thianthrene and other sulfur heterocyclics adsorbed on oxide surfaces

“…In a more recent example, we showed that phenazine is oxidized to produce well-defined radical cations. 4 Similar results have been reported by other workers with a variety of systems.13 An early example is the spectrum of perylene, which was shown by Hall14 to arise both in solution and on silica-alumina surfaces from the monopositive species.…”

Catalytic and Thermal Cracking of Coal-Derived Liquid in a Fixed-Bed Reactor

“…One of the surface reactions is some form of an acid-base reaction between acidic phenols and the basic sites and deoxygenation of phenols resulting in corresponding neutral AR, which are eventually cracked to light hydrocarbons and coke. Anions of nitrobenzene, basic nitrogen compounds, and sulfur-containing compounds have been generated on the surfaces of calcium and magnesium oxides (Iizuka et al, 1971;Seshadri and Petrakis, 1970). Iizuka and co-workers (1971) have observed that styrene is reduced to benzyl anions on CCQ calcined in a vacuum at 500 °C, and the negative ion is finally converted to a styrene polymer.…”