Viscosities and Densities of Fatty Alcohol Mixtures from 298.15 to 338.15 K: Estimation by Kay's Rule and Prediction by the UNIFAC-VISCO and GC-UNIMOD Group Contribution Methods

Author(s)

Pinto, Camila N. ^[1] ; Frugoli, Gabriel Z. ^[1] ; Florido, Priscila M. ^[1] ; Atzingen, Gustavo V. ^[2] ; Rodrigues, Christianne E. C. ^[1] ; Goncalves, Cintia B. ^[1]

Affiliation

^[1] Univ Sao Paulo, Dept Food Engn, POB 23, BR-13635900 Pirassununga, SP - Brazil

^[2] Sao Paulo Fed Inst Educ Sci & Technol, BR-13414155 Piracicaba, SP - Brazil

• Document type: Journal article
• Source: JOURNAL OF CHEMICAL AND ENGINEERING DATA; v. 64, n. 5, SI, p. 1937-1947, MAY 2019.
• Web of Science Citations: 0

Abstract

The physical properties density and viscosity of 21 binary mixtures composed of 1-hexanol, 1-heptanol, 1-octanol, 1-nonanol, 1-decanol, 1-undecanol, and 1-dodecanol were determined at temperatures from 298.15 to 338.15 K, stepped by 10 K. Well-known methods, based on the physical properties of the pure compounds and their compositions in the mixtures, were used to estimate density (simple form of Kay's rule) and viscosity (logarithmic form of Kay's rule). For density values, the absolute average deviations (AADs) were no higher than 0.06%, when mass fraction was used as the unit of concentration. The viscosity calculations resulted in overall AADs from 1.77% (using molar fraction as the unit of concentration) to 1.85% (using mass fraction as the unit of concentration). Additionally, the predictive capability of the UNIFAC-VISCO and GC-UNIMOD models was tested for viscosity. Satisfactory results were found for all the sets of parameters evaluated in the prediction, with AAD values less than 2%, indicating the appropriate application of these models. (AU)

• FAPESP's process: 14/21252-0 - Equilibrium and production processes of biofuels and bioproducts
• Grantee: Antonio José de Almeida Meirelles
• Support type: Research Projects - Thematic Grants
• FAPESP's process: 12/23203-1 - Viscosities and densities of systems of interest to the oil industry and biodiesel production: experimental data, modeling and prediction
• Grantee: Cintia Bernardo Gonçalves
• Support type: Regular Research Grants
• FAPESP's process: 15/16781-7 - Optimization of parameters for models based in group contribution concept applied to calculation of viscosity for non-ideal mixtures
• Grantee: Camila Nardi Pinto
• Support type: Scholarships in Brazil - Doctorate
• FAPESP's process: 18/21558-3 - NTERFACIAL TENSION IN LIQUID-LIQUID SYSTEMS OF INTEREST FOR THE INDUSTRY OF EDIBLE VEGETABLE OILS AND BIOFUELS
• Grantee: Cintia Bernardo Gonçalves
• Support type: Regular Research Grants