Research Study of Physicochemical Techniques for the Purification of Organic Compounds.
Abstract
The process of membrane permeation was investigated to determine separation and rate characteristics of various films permeated by n-hexane, acetone, chloroform, and ethanol, and various binaries made up of these chemicals. The characteristics were related to the chemical nature of permeants and films. Combinations of the binaries with chemically different films were studied for separation. Cases of extremely high separations were discovered and two rules for separation behaviour were developed: (1) binaries of those components which vary more in polarity are generally more easily separated; and (2) the component of polarity more like that of the film is preferentially permeated. The concept of rate factors used to correlate the rates of pure solvents with polarity of films and permeants. Rates as high as 2000 g/hr-sq m were not uncommon. Studies were made of the rates for several high molecular weight substances through various commercial films. Instances of significant permeation were discovered. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 06, 1961
- Accession Number
- AD0267911
Entities
People
- Arthur Rose
- Robert F. Sweeny