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Vapours

About: Vapours is a research topic. Over the lifetime, 1153 publications have been published within this topic receiving 15022 citations.


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Journal ArticleDOI
TL;DR: In this article, the suitability of the Sircar equations for the analysis of the adsorption isotherms of vapours on non-porous solids, by applying both equations to experimental data reported in the literature corresponding to the nitrogen at 77 K on a nonporous carbon-coated silica.
Abstract: A comparative study is reported of the suitability of the BET and Sircar equations for the analysis of the adsorption isotherms of vapours on non-porous solids, by applying both equations to experimental data reported in the literature corresponding to the adsorption of nitrogen at 77 K on a non-porous carbon-coated silica. It is concluded that Sircar's method, despite its greater mathematical complexity, does not provide better precision in determining the parameters of the equation. In addition, the monolayer capacity values are very different in both cases
Patent
27 Jul 1989
TL;DR: In this article, the authors proposed to feed the reaction product leaving the reaction zone to a coking zone and to cool the gases and vapours arising there, predominantly distillate oil vapours, preferably in direct exchange with the fresh coal paste.
Abstract: In a process for liquefying coal under elevated pressure and at elevated temperature in a reaction zone, it is proposed to feed the reaction product leaving the reaction zone to a coking zone and to cool the gases and vapours arising there, predominantly distillate oil vapours, preferably in direct exchange with the fresh coal paste. The gases and vapours not condensed in this heat exchange are taken off from the plant as end product. By means of the proposed procedure, the oil production is partially displaced from the reaction zone to the coking zone, so that the reaction zone can be operated under a low pressure. Furthermore, a major part of the quantity of exothermic heat generated in the liquefaction reactions can be recycled to the process by the direct heat exchange of the product vapours with the fresh coal paste.
Journal ArticleDOI
TL;DR: In this article, the authors described the densities at a series of low pressures of the unsaturated vapours of the normal liquids, including carbon tetrachloride, carbon disulphide, perfluoromethylcyclohexane and acetone, and concluded that the deviations from ideality with pressure of all these vapours were strictly linear within the limits of experimental error.
Abstract: By means of a method already described the densities at a series of low pressures of the unsaturated vapours of ethyl ether, carbon tetrachloride, carbon disulphide, perfluoromethylcyclohexane and acetone have been determined at 22 degrees C. The deviations from ideality with pressure of all these vapours were, with the exception of acetone, found to be strictly linear within the limits of experimental error, and the molecular weights deduced from the limiting densities showed a close agreement with standard values. It is concluded that the principle of limiting densities can be extended to the determination of the exact molecular weights of the vapours of normal liquids.

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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202337
202276
202112
202025
201914
201818