Abstract

The interaction of acid, PNA) vapor with liquid sulfuric acid surfaces was investigated for the acid contents from 50 to 70 wt % and over a temperature range from 205 to 230 K, using a fast flow-reactor coupled to a chemical ionization mass spectrometer. PNA was observed to be physically taken up by liquid sulfuric acid, without undergoing irreversible aqueous phase reactions, The measured coefficient was found to vary from about 0.2 on wt % to 0,06 on 70 % acid solution, From the dependent uptake, the quantity (that is the product of the law coefficient and the square root of the liquid-phase diffusion coefficient) obtained. The Henry's law volubility coefficient of PNA in sulfuric acid was by estimating the liquid-phase diffusion coefficient based on a cubic cell model. In general, y was found to increase with decreasing acid content and decreasing temperature. a constant partial pressure of 6.1X104 Torr, was determined to be M at 205 K and M at 222 K, as the acid content was...

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