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EPR Study on the Mechanism of H2O2-Based Oxidation of Alkylphenols over Titanium Single-Site Catalysts Научная публикация

Журнал Journal of Molecular Catalysis A: Chemical
ISSN: 1381-1169
Вых. Данные Год: 2007, Том: 277, Номер: 1-2, Страницы: 185-192 Страниц : 8 DOI: 10.1016/j.molcata.2007.07.047
Ключевые слова 2,3,6-Trimethylphenol, 2-Methyl-1-naphthol, EPR spectroscopy, H2O2, Oxidation mechanism, Spin traps, Titanium single-site catalysts
Авторы Zalomaeva Olga V. 1 , Trukhan Natalia N. 2 , Ivanchikova Irina D. 1 , Panchenko Alexander A. 2 , Roduner Emil 2 , Talsi Eugenii P. 1 , Sorokin Alexander B. 3 , Rogov Vladimir A. 1 , Kholdeeva Oxana A. 1
Организации
1 Boreskov Institute of Catalysis, Acad. Lavrentiev Av. 5, 630090 Novosibirsk, Russia
2 Institute of Physical Chemistry, Stuttgart University, D-70569 Stuttgart, Germany
3 Institut de Recherches sur la Catalyse et l’Environnement de Lyon, UMR 5256 CNRS/Universite Lyon 1, 2, avenue A. Einstein, 69626 Villeurbanne Cedex, France

Информация о финансировании (4)

1 Российский фонд фундаментальных исследований 05-03-34760
2 French National Centre for Scientific Research
3 Посольство Франции в России
4 Alexander von Humboldt Foundation

Реферат: The selective oxidation of 2,3,6-trimethylphenol (TMP) and 2-methyl-1-naphthol (MNL) with H2O2 catalyzed by titanium single-site catalysts, TiO2–SiO2 aerogel and mesostructured hydrothermally stable titanium-silicate, Ti-MMM-2, have been studied by means of EPR spectroscopic technique with spin traps. The formation of phenoxyl (naphthoxyl) and hydroxyl radical intermediates during the oxidation process have been detected using 3,5-dibromo-4-nitrosobenzene-sulfonic acid (DBNBS) and 5,5-dimethyl-1-pyrroline-N-oxide (DMPO) spin traps, respectively. The character of the EPR spectra of the DBNBS adducts strongly depends on the nature of the organic substrate and the reaction temperature. A compilation of the EPR and by-product studies strongly supports a homolytic oxidation mechanism. Study by DR-UV–vis spectroscopy has confirmed the previously suggested chemical adsorption of phenol on the titanium center.
Библиографическая ссылка: Zalomaeva O.V. , Trukhan N.N. , Ivanchikova I.D. , Panchenko A.A. , Roduner E. , Talsi E.P. , Sorokin A.B. , Rogov V.A. , Kholdeeva O.A.
EPR Study on the Mechanism of H2O2-Based Oxidation of Alkylphenols over Titanium Single-Site Catalysts
Journal of Molecular Catalysis A: Chemical. 2007. V.277. N1-2. P.185-192. DOI: 10.1016/j.molcata.2007.07.047 WOS Scopus РИНЦ CAPlusCA OpenAlex
Даты:
Поступила в редакцию: 15 июн. 2007 г.
Принята к публикации: 30 июл. 2007 г.
Опубликована online: 6 авг. 2007 г.
Опубликована в печати: 16 нояб. 2007 г.
Идентификаторы БД:
Web of science: WOS:000250983200024
Scopus: 2-s2.0-35348906696
РИНЦ: 13542148
Chemical Abstracts: 2007:1205311
Chemical Abstracts (print): 148:191533
OpenAlex: W1992497430
Цитирование в БД:
БД Цитирований
Web of science 37
Scopus 39
РИНЦ 37
OpenAlex 37
Альметрики: