![Photochemistry in the mixed aqueous solution of nitrobenzene and nitrous acid as initiated by the 355nm UV light [An article from: Chemosphere]](https://www.ebooknetworking.net/books/B00/0PD/bigB000PDSOI2.jpg)
Photochemistry in the mixed aqueous solution of nitrobenzene and nitrous acid as initiated by the 355nm UV light [An article from: Chemosphere]
Description
This digital document is a journal article from Chemosphere, published by Elsevier in 2007. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
The 355nm photon-initiated microscopic reaction mechanisms of the mixed aqueous solution of nitrobenzene and nitrous acid in the presence or absence of O"2 were studied by the laser flash photolysis technique. The main transient absorption peaks in the recorded spectra were assigned and the growth/decay trends of several transient species were investigated. It was found that the OH radical formed from the photolysis of nitrous acid triggered most of the subsequent radical reactions. The rate constant of the reaction between OH radical and nitrobenzene was measured to be (3.4+/-0.1)x10^9lmol^-^1s^-^1. The product from this reaction, namely C"6H"5NO"2-OH adduct, was found to react with O"2 to yield C"6H"5NO"2-OHO"2 adduct with a rate constant of (1.6+/-0.2)x10^9lmol^-^1s^-^1. Final steady-state products were identified by GC/MS analysis and were in accordance with the transient spectroscopic results. The possible reaction pathways were proposed.
Description:
The 355nm photon-initiated microscopic reaction mechanisms of the mixed aqueous solution of nitrobenzene and nitrous acid in the presence or absence of O"2 were studied by the laser flash photolysis technique. The main transient absorption peaks in the recorded spectra were assigned and the growth/decay trends of several transient species were investigated. It was found that the OH radical formed from the photolysis of nitrous acid triggered most of the subsequent radical reactions. The rate constant of the reaction between OH radical and nitrobenzene was measured to be (3.4+/-0.1)x10^9lmol^-^1s^-^1. The product from this reaction, namely C"6H"5NO"2-OH adduct, was found to react with O"2 to yield C"6H"5NO"2-OHO"2 adduct with a rate constant of (1.6+/-0.2)x10^9lmol^-^1s^-^1. Final steady-state products were identified by GC/MS analysis and were in accordance with the transient spectroscopic results. The possible reaction pathways were proposed.
