Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4764252 | Chinese Journal of Chemical Engineering | 2016 | 30 Pages |
Abstract
The molar heat capacities (Cp) of guaiacol (CAS 90-50-1) and acetyl guaiacol ester (AGE, CAS 613-70-7) were determinated from 290 K to 350 K by differential scanning calorimetry (DSC), and expressed as a function of temperature. Two kinds of group contribution models were used to estimate the molar heat capacities of both guaiacol and AGE, the average relative deviation is less than 10%. The standard molar enthalpies of combustion of guaiacol and AGE were â 3590.0 kJ·molâ 1 and â 4522.1 kJ·molâ 1 by a precise thermal isolation Oxygen Bomb Calorimeter. The standard molar enthalpies of formation of guaiacol and AGE in a liquid state at 298.15 K were calculated to be â 307.95 kJ·molâ 1 and â 448.72 kJ·molâ 1, respectively, based on the standard molar enthalpies of combustion. The thermodynamic properties are useful for exploiting the new synthesis method, engineering design and industry production of AGE using guaiacol as a raw material.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Changshuai Shen, Wenli Li, Cairong Zhou,