n-Octanol oxidation on Au/TiO2 catalysts promoted with La and Ce oxides; Molecular Catalysis; Vol. 427

N-Octanol oxidation on Au/TiO2 catalysts promoted with La and Ce oxides; Molecular Catalysis; Vol. 427

Bibliographic Details
Parent link:Molecular Catalysis
Vol. 427.— 2017.— [P. 1-10]
Corporate Author: Национальный исследовательский Томский политехнический университет (ТПУ) Институт природных ресурсов (ИПР) Кафедра физической и аналитической химии (ФАХ)
Other Authors: Kotolevich Yu. I. Yuliya, Kolobova E. N. Ekaterina Nikolaevna, Khramov E. V. Evgeny Vladimirovich, Farias M. H. Mario, Zubavichus Ya. V. Yan Vitautasovich, Tiznado H., Martinez-Gonzalez S., Cortes Corberan V., Mota-Morales Jo. D. Josue, Pestryakov A. N. Aleksey Nikolaevich, Bogdanchikova N. E. Nina Evgenjevna
Summary:Title screen
This study aims to improve gold-based catalyst effectiveness in n-octanol oxidation by adjusting the structural and electronic properties of gold through incorporation of additives to support. Au/La/TiO2, Au/Ce/TiO2, and Au/TiO2 catalysts, prepared by deposition-precipitation with urea, were tested in the base-free oxidation of octanol under mild conditions in liquid phase. The influence of additives on structural properties of the catalyst and the active phase, and on the electronic and redox properties of the active gold species was studied by TEM, SR-XRD, EXAFS, FTIR of adsorbed CO, and XPS. Support modifiers affected gold particle size distribution, but no direct dependence of the catalyst activity on Au NPs average size was observed. The activity of as-prepared catalysts was limited, and even lower in the presence of modifiers at that stage. Reductive pretreatment boosted the activity of every catalyst, and support modification with La and Ce increased four- and two-fold, respectively, the activity of Au/TiO2 under the same reaction conditions. The nature of modifiers also affected the product distribution where the outstanding performance of Au/La/TiO2 gives rise to the highest ester selectivity at isoconversion with no acid formation. Overall, the studied catalysts, and especially Au/Ce/TiO2, and Au/La/TiO2, hold promise for n-octanol oxidation under mild conditions.
Режим доступа: по договору с организацией-держателем ресурса
Language:English
Published: 2017
Subjects:
электронный ресурс
труды учёных ТПУ
n-Octanol oxidation
gold catalysts
gold
electronic state
La and Ce oxides
окисление
катализаторы
золото
электронные состояния
Online Access:https://doi.org/10.1016/j.molcata.2016.09.003
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=655665

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