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Ultrasonic irradiation of p-nitrophenol in aqueous solution

Kotronarou, A. and Mills, G. and Hoffmann, M. R. (1991) Ultrasonic irradiation of p-nitrophenol in aqueous solution. Journal of Physical Chemistry, 95 (9). pp. 3630-3638. ISSN 0022-3654 . https://resolver.caltech.edu/CaltechAUTHORS:20150813-105952810

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Abstract

The kinetics and mechanism of the sonochemical reactions of p-nitrophenol have been investigated in oxygenated aqueous solutions. In the presence of ultrasound (20 kHz, 84 W) p-nitrophenol was degraded primarily by denitration to yield NO_2^-, NO_3^-, benzoquinone, hydroquinone, 4-nitrocatechol, formate, and oxalate. These reaction products and the kinetic observations are consistent with a model involving high-temperature reactions of p-nitrophenol in the interfacial region of cavitation bubbles. The main reaction pathway appears to be carbon-nitrogen bond cleavage. Reaction with hydroxyl radical provides a secondary reaction channel. The average effective temperature of the interfacial region surrounding the cavitation bubbles was estimated to be T ≃ 800 K.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1021/j100162a037DOIArticle
http://pubs.acs.org/doi/abs/10.1021/j100162a037PublisherArticle
ORCID:
AuthorORCID
Hoffmann, M. R.0000-0002-0432-6564
Additional Information:© 1991 American Chemical Society. Received: August 17, 1990; In Final Form: November 19, 1990. Publication Date: May 1991. This research was supported by the US. EPA Office of Exploratory Research (Grant Nos. R813326-01-0 and R-815041-01-0).
Funders:
Funding AgencyGrant Number
Environmental Protection Agency (EPA)R813326-01-0
Environmental Protection Agency (EPA)R-81504 -01-0
Issue or Number:9
Record Number:CaltechAUTHORS:20150813-105952810
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20150813-105952810
Official Citation:Ultrasonic irradiation of p-nitrophenol in aqueous solution A. Kotronarou, G. Mills, and M. R. Hoffmann The Journal of Physical Chemistry 1991 95 (9), 3630-3638 DOI: 10.1021/j100162a037
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:59483
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:14 Aug 2015 15:54
Last Modified:03 Oct 2019 08:47

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