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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemical engineering
Estimation of pure component properties: Part 1. Estimation of the normal boiling point of non-electrolyte organic compounds via group contributions and group interactions
Fluid Phase Equilibria, Volume 226, No. 1-2, Year 2004
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Description
An improved group contribution method for the estimation of the normal boiling point of non-electrolyte organic compounds was developed using experimental data for approximately 2850 components stored in the Dortmund Data Bank (DDB). The new model is based on a method published earlier, which was extended using a steric parameter, additional corrections and group interaction parameters as well as several additional groups for extended range of applicability. The mathematical formalism was modified to allow for separate examination and regression of individual contributions. The results of this separate examination lead to the detection of unreliable data and the definition of further structural groups. For the boiling point prediction, only the molecular structure of the compound is used. The results of the new method are compared to the previous work and several currently used methods and are shown to be far more accurate and reliable. The detailed comparison for a large number of different sets of chemically similar compounds allows one to access the probable estimation error of the different methods. Structural groups were defined in a standardized form and fragmentation of the molecular structures was performed by an automatic procedure to eliminate any arbitrary assumptions. © 2004 Elsevier B.V. All rights reserved.
Authors & Co-Authors
Nannoolal, Yash
South Africa, Durban
University of Kwazulu-natal School of Chemical Engineering
Rarey, Jurgen R.
South Africa, Durban
University of Kwazulu-natal School of Chemical Engineering
Germany, Oldenburg
Ddbst Gmbh
Ramjugernath, Deresh
South Africa, Durban
University of Kwazulu-natal School of Chemical Engineering
Cordes, Wilfried
Germany, Oldenburg
Ddbst Gmbh
Statistics
Citations: 219
Authors: 4
Affiliations: 2
Identifiers
Doi:
10.1016/j.fluid.2004.09.001
ISSN:
03783812
Research Areas
Health System And Policy