Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Photochemical and photocatalytic degradation of 1-propanol using UV/H2O2: Identification of malonate as byproduct

Full text
Author(s):
Ferreira Santos, Mauro Sergio [1, 2] ; Cordeiro, Thiago Gomes [3, 1] ; Cieslarova, Zuzana [1] ; Rolf Gutz, Ivano Gebhardt [1] ; Garcia, Carlos D. [3]
Total Authors: 5
Affiliation:
[1] Univ Sao Paulo, Inst Quim, Dept Quim Fundamental, Av Prof Lineu Prestes 748, BR-05508000 Sao Paulo, SP - Brazil
[2] CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 - USA
[3] Clemson Univ, Dept Chem, Clemson, SC 29634 - USA
Total Affiliations: 3
Document type: Journal article
Source: ELECTROPHORESIS; v. 40, n. 18-19, p. 2256-2262, SEP 2019.
Web of Science Citations: 1
Abstract

1-propanol is a primary alcohol extensively used in the pharmaceutical, chemical, and food industries. It has been also found as a contaminant in the atmosphere and is considered a model compound to mimic the behavior and fate of aliphatic alcohols exposed to environmental conditions. In order to understand that role of relevant variables, this paper presents results obtained with a simple experimental set-up to investigate the reactivity of 1-propanol under mild oxidizing conditions. Coupling this system with CE-(CD)-D-4 allowed the quantification of the carboxylic acids formed. For the described experiments, aqueous solutions of 1-propanol were placed inside a photoreactor and oxidized upon the addition of TiO2 and/or H2O2. According to the described results, the addition of H2O2 (0.1% w/w) was the most significant variable, roughly tripled the amount of carboxylic acids generated and led to the conversion of up to 70% of the initially available 1-propanol (1 mmol/L). More importantly, the reaction yielded the formation (within 10 min) of propionate (50 mu mol/L), acetate (400 mu mol/L), formate (50 mu mol/L), and malonate (200 mu mol/L). The latter is critically important because it represents the first example of the photochemical oxidation of both terminal carbons of the C-3-chain of 1-propanol under mild conditions, and opens new avenues for the production of this important chemical building block. (AU)

FAPESP's process: 12/06642-1 - Formation and properties of adducts of organic hydroxy-compounds with carbonate in aqueous medium and biological conditions
Grantee:Claudimir Lucio Do Lago
Support Opportunities: Regular Research Grants