Pyrolysis of cyclo-aromatic diesters

Marta Worzakowska

doi:10.1007/s10973-014-4021-y

Abstract

Studies on the pyrolysis of cyclo-aromatic diesters derivatives of 3-phenylprop-2-en-1-ol are presented. The diesters are obtained during catalyzed esterification process of a stoichiometric ratio of 3-phenylprop-2-en-1-ol with suitable cycloaliphatic or aromatic acid anhydride in the solvent-free medium. As an acid anhydrides cyclohexane-1,2-dicarboxylic anhydride, cis-4-cyclohexene-1,2-dicarboxylic anhydride, bicyclo[2.2.1]-5-heptene-2,3-dicarboxylic anhydride, and phthalic anhydride were applied. The thermal properties of obtained compounds under inert atmosphere were tested by means of differential scanning calorimetry and thermogravimetry coupled with FTIR analysis. The pyrolysis products were determined and the probable mechanism of their decomposition was proposed.

Highlights

Thermogravimetric analysis is one of the most useful techniques of thermal analysis
We have used the techniques of thermal analysis coupled to FTIR or/and QMS to study the degradation mechanism under pyrolysis or oxidation conditions of aliphatic, linear chain diesters [19, 20]
The main objective of the present paper is to study the thermal stability and the degradation mechanism of aromatic and cyclo-aromatic diesters derivatives of naturally

Summary

Introduction

It is commonly applied to characterize the thermal behavior of various compounds This technique measures the mass loss as a function of temperature or time. We have used the techniques of thermal analysis coupled to FTIR or/and QMS to study the degradation mechanism under pyrolysis or oxidation conditions of aliphatic, linear chain diesters [19, 20]. Such compounds can be successfully applied as low volatile compounds to many practical applications, especially as aroma compounds which are widely used in cosmetic, perfumery, and food industries as a flavor and fragrance components [19–23]

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Conclusion