Prediction of surface tension of naphtha reformate using UNIFAC | Zendy

Darwish E. I. | Zendy; AlSahhaf T. A. | Zendy; Fahim M. A. | Zendy

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Prediction of surface tension of naphtha reformate using UNIFAC

Author(s) -

Darwish E. I.,

AlSahhaf T. A.,

Fahim M. A.

Publication year - 1994

Publication title -

the canadian journal of chemical engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.404

H-Index - 67

eISSN - 1939-019X

pISSN - 0008-4034

DOI - 10.1002/cjce.5450720622

Subject(s) - naphtha , catalytic reforming , surface tension , unifac , chemistry , thermodynamics , boiling , boiling point , standard deviation , absolute deviation , range (aeronautics) , analytical chemistry (journal) , chromatography , materials science , mathematics , catalysis , composite material , organic chemistry , activity coefficient , statistics , aqueous solution , physics

The surface tension of naphtha reformate cuts (60−170°C) were predicted using a modified UNIFAC group contribution method. The naphtha was distilled into eleven cuts of 10°C intervals to obtain narrow boiling range cuts. The surface tensions were determined in the temperature range 10−50°C and were compared with predicted values. A standard deviation of 5.9% was found using this method, versus 3.7% when the corresponding states method was used over the temperature range of 60−170°C. However, for the higher temperature range of 140−170°C, this method gave a standard deviation of 2.9% versus 7.6% for the other method.

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