Article Details


A Comparative Study on the Thermal and Microwave-assisted Direct Esterification of Phenyl-H-phosphinic Acid - Modeling the Rate Enhancing Effect of MWs

[ Vol. 6 , Issue. 4 ]

Author(s):

Gyorgy Keglevich, Nora Z. Kiss and Zoltan Mucsi   Pages 307 - 311 ( 5 )

Abstract:


Background: The theoretical background of MW-assisted reactions is in the focus these days.

Objective and Method: We wished to model the distribution of local overheatings (OHs) mathematically, and the rate enhancing effect of the OHs utilizing the Arrhenius equation. The model reaction was the esterification of phenyl-H-phosphinic acid with 15-fold butanol at 160 °C.

Results: The results of the modelling and predictions matched the experimental data revealing the MWassited esterification to be 2.71 time faster than the thermal reaction.

Conclusion: Our explanation for the beneficial effect of MW irradiation assuming local OHs may be modelled well, and is in accord with experimental data.

Keywords:

Phenyl-H-phosphinic acid, esterification, microwave, local overheating, modeling, arrhenius equation.

Affiliation:

Budapest University of Technology and Economics, Department of Organic Chemical Technology, Budapest, Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest, Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1521 Budapest

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