A New Contact Sulfuric Acid Process

Correlated Angular and Quantum State-Resolved CO2 Scattering Dynamics at the Gas−Liquid Interface

“…The study of both reactive and inelastic collisions in the gas phase represents an enormously fertile area of research interest, toward which Professor Stephen R. Leone has made seminal contributions over the last several decades. − As a result of such pioneering efforts by Leone and others in the chemical physics community, our understanding of state-to-state gas-phase collision dynamics has reached new heights of predictive power, control, and elegance. ,− An equivalent intellectual framework for understanding state-to-state collision dynamics at the gas−liquid interface has proven more elusive, toward which recent efforts in our group have been dedicated. − The desire for greater understanding of such interfacial dynamics is motivated by both practical and fundamental interests. Indeed, gas−condensed-phase interactions arguably play a major role in a wide range of chemical phenomena such as industrial synthesis, combustion, aerosols, , pollution, atmospheric ozone depletion, − as well as many other heterogeneous chemical processes.…”

Vanadium Catalysts

“…test (8,16)) peroxide value (11,16,29), Schibsted fataldehyde value (24) , von Fellenberg test (6) , and methylene blue fading test (12, 23) which involve color comparisons or colorimetric titration are not directly applicable to the fat extract from roasted coffee on account of its deep pigmentation. The ordinary fat constants such as free acidity, iodine value, etc., are not usually employed because significant changes do not occur until some time after changes detectable by organoleptic tests are well advanced (26).…”

“…There are practically no experimental data in the American chemical literature relating to the effects of arsenic upon vanadium contact masses in the manufacture of sulfuric acid, although it has been stated (6) that some prominent sulfuric acid company in the United States subjected a vanadium contact mass to the action of excessive amounts of catalytic poisons, such as compounds of arsenic, selenium, antimony, hydrochloric acid, and hydrofluoric acid; the total weight of the poison being about two thirds of the total weight of the contact mass, and no diminution in activity was shown.…”