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On the effect of 2-propanol on phenol photonitration upon nitrate photolysis

Paper ID Volume ID Publish Year Pages File Format Full-Text
27328 44016 2011 3 PDF Available
Title
On the effect of 2-propanol on phenol photonitration upon nitrate photolysis
Abstract

It is shown that the enhancement by 2-propanol of the nitration of phenol upon nitrate photolysis is compatible with the inhibition by the alcohol of in-cage recombination between O− and NO2. This effect would increase the availability of NO2 that is involved into phenol nitration, despite the enhancement by the alcohol of the production of superoxide that is a scavenger of NO2. A kinetic model is proposed to describe the experimental data and to get insight into the processes involved. Kinetic calculations suggest that in the absence of 2-propanol less than 25% of cage O− and NO2 would evolve into bulk species, the remainder undergoing recombination to nitrate. If reaction between cage O− and phenol were not negligible, the percentage of bulk species formation would be even lower. The data also show that most of the recombination between OH/O− and NO2 would take place in the solvent cage instead of the solution bulk.

► Quantification of phenol photonitration in presence of an OH scavenger. ► Quantitative assessment of geminate recombination of OH + NO2 formed by nitrate photolysis. ► Comparison of geminate vs. bulk recombination of OH + NO2.

Keywords
Photochemistry; Aromatic nitroderivatives; Solvent cage; 2-Nitrophenol; Chemical kinetics simulator
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On the effect of 2-propanol on phenol photonitration upon nitrate photolysis
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 224, Issue 1, 15 November 2011, Pages 68–70
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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Price was $35.95
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