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Amorphization of Degussa Nanosized TiO2 Caused by Its Modification Научная публикация

Журнал Fuel
ISSN: 0016-2361 , E-ISSN: 1873-7153
Вых. Данные Год: 2018, Том: 234, Страницы: 312-317 Страниц : 6 DOI: 10.1016/j.fuel.2018.06.127
Ключевые слова Amorphization; Degussa P25; EXAFS; X-ray diffraction on synchrotron radiation
Авторы Khramov E. 1 , Kotolevich Y. 2 , García Ramos J.C. 2 , Pestryakov A. 3 , Zubavichus Y. 2 , Bogdanchikova N. 2
Организации
1 National Research Center “Kurchatov Institute”, Moscow 123182, Russia
2 Centro de Nanociencias y Nanotecnología, (UNAM), Ensenada 22860, Mexico
3 Tomsk Polytechnic University, Tomsk 634050, Russia

Реферат: Influence of modification with metals Au and Ag, oxides of Fe, Mg and Ce and their combinations on amorphization of widely used commercial nanosized TiO2 (Degussa P25) was studied with SR-XRD and EXAFS methods. These systems were chosen taking into account their potential on catalytic properties for biomass to biodiesel transformation, as it was shown in model reaction of liquid phase n-octanol oxidation as well as low-temperature CO oxidation for “cold start” of the neutralizers of car exhaust gases. Instability of rutile, the most stable TiO2 phase, in the presence of the additives was found. Application of EXAFS method, rarely used for crystalline structure transfer studies, led to elucidation of this apparent effect, which was explained by higher level of amorphization of rutile than anatase. Literature data indicate that bulky TiO2 doping leads to either increase of rutile/anatase ratio complete inhibition of anatase to rutile transformation. Dissimilar phase composition changes, revealed in this work for modified nanodispersed TiO2, was attributed to size effect.
Библиографическая ссылка: Khramov E. , Kotolevich Y. , García Ramos J.C. , Pestryakov A. , Zubavichus Y. , Bogdanchikova N.
Amorphization of Degussa Nanosized TiO2 Caused by Its Modification
Fuel. 2018. V.234. P.312-317. DOI: 10.1016/j.fuel.2018.06.127 WOS Scopus РИНЦ CAPlusCA OpenAlex
Даты:
Поступила в редакцию: 14 мар. 2018 г.
Принята к публикации: 29 июн. 2018 г.
Опубликована online: 13 июл. 2018 г.
Опубликована в печати: 15 дек. 2018 г.
Идентификаторы БД:
Web of science: WOS:000445253100033
Scopus: 2-s2.0-85049759345
РИНЦ: 35749519
Chemical Abstracts: 2018:1322811
Chemical Abstracts (print): 169:268555
OpenAlex: W2883538570
Цитирование в БД:
БД Цитирований
Web of science 5
Scopus 5
OpenAlex 5
Альметрики: