Differences in properties between aromatic hydrocarbons and alkanes
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During the distillation process, what are the differences in the boiling temperatures of aromatics and alkanes at different pressures? I checked relevant information but couldn’t find any clear explanations. It seems to me that the sensitivity of the distillation temperatures of aromatics and alkanes to pressure should be different; alkanes might be more sensitive, based on my understanding of molecular structure.
Check the petrochemical property data handbook!
During the distillation process, what are the differences in the boiling temperatures of aromatics and alkanes at different pressures? It is necessary to specify exactly which aromatics and alkanes are involved; for example, among aromatics: benzene, toluene, xylene, naphthalene, etc., and among alkanes: pentane, n-octane, i-octane, iso-octane, hexadecane, triglyceraldehyde, etc. There are overlaps in the boiling points of aromatics and alkanes.
What was said upstairs is correct; I didn’t be specific. What I actually wanted to ask is: what is the difference between polycyclic aromatic hydrocarbons and hexadecane? Within a pressure range of about one to two kilograms, does a change in pressure have the same effect on their distillation temperatures?
This post was last edited by qugd on 2018-1-22 at 11:47. For such issues, comparison can only be done by considering specific components, or by defining the number of carbon atoms and the type of structure. Speaking in such general terms doesn’t provide any specific answers. Even for bicyclic aromatics, which consist of only ten carbon atoms, the hydrocarbon structure of their side chains has a significant impact on their physical properties, making it impossible to compare them directly with hexadecane. Furthermore, the different structural compositions of hexadecanes also result in a large number of distinct isomers, and it is impossible to determine which one specifically it is.