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100 _a20190214a2019 k y0engy50 ba
101 0 _aeng
102 _aNL
135 _adrcn ---uucaa
181 0 _ai
182 0 _ab
200 1 _aAmorphization of Degussa nanosized TiO2 caused by its modification
_fE. V. Khramov [et al.]
203 _aText
_celectronic
300 _aTitle screen
320 _a[References: 63 tit.]
330 _aInfluence 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.
333 _aРежим доступа: по договору с организацией-держателем ресурса
461 _tFuel
463 _tVol. 234
_v[P. 312-317]
_d2018
610 1 _aтруды учёных ТПУ
610 1 _aэлектронный ресурс
610 1 _aаморфизация
610 1 _aдифракция
610 1 _aрентгеновские лучи
610 1 _aсинхротронное излучение
701 1 _aKhramov
_bE. V.
_gEvgeny Vladimirovich
701 1 _aKotolevich
_bY. S.
701 1 _aRamos
_bJ. C.
701 1 _aPestryakov
_bA. N.
_cChemist
_cProfessor of Tomsk Polytechnic University, Doctor of Chemical Science
_f1963-
_gAleksey Nikolaevich
_2stltpush
_3(RuTPU)RU\TPU\pers\30471
701 1 _aZubavichus
_bY. V.
_gYan Vitautasovich
701 1 _aBogdanchikova
_bN.
712 0 2 _aНациональный исследовательский Томский политехнический университет
_bИсследовательская школа химических и биомедицинских технологий (ИШХБМТ)
_c(2017- )
_h8120
_2stltpush
_3(RuTPU)RU\TPU\col\23537
801 2 _aRU
_b63413507
_c20190214
_gRCR
856 4 _uhttps://doi.org/10.1016/j.fuel.2018.06.127
942 _cCF