Catalytic Activity of Gold Nanoparticles Incorporated into Modified Zeolites

Catalytic Activity of Gold Nanoparticles Incorporated into Modified Zeolites

Bibliographic Details
Parent link:Journal of Nanoscience and Nanotechnology.— , 2001-
Vol. 7, № 6.— 2007.— P. 1882-1886
Other Authors: Smolentseva E., Bogdanchikova N., Simakov A., Pestryakov A. N. Aleksey Nikolaevich, Avalos M., Farias M. H., Tompos A., Gurin V.
Summary:Gold catalysts modified by Fe and Ni and supported on different zeolite matrixes have been studied by TEM, TPR, and catalytic testing. The presence of a metal oxide additive allows stabilizing small gold particles, particularly in the case of Fe. The shape of light-off curves shows two temperature regions of the catalyst activity, a low-temperature range below 250 °C and a high-temperature range above 300 °C. This situation is explained considering the existence of at least two types of catalytically active sites of gold assigned to gold clusters and gold nanoparticles, respectively, while the ionic state of gold (Au3+) remains inactive. It is shown that interaction of gold with Fe promoter leads to activation of catalysts at low temperature due to a change of electronic state and redox properties of gold. NiO additive cause a similar, but less pronounced effect.
В фонде НТБ ТПУ отсутствует
Published: 2007
Subjects:
труды учёных ТПУ
Format: Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=599072

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