Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 559351
Title Superior Stability of Au/SiO2 Compared to Au/TiO2 Catalysts for the Selective Hydrogenation of Butadiene
Author(s) Masoud, Nazila; Delannoy, Laurent; Schaink, Herrick; Eerden, Ad van der; Rijk, Jan Willem de; Silva, Tiago A.G.; Banerjee, Dipanjan; Meeldijk, Johannes D.; Jong, Krijn P. de; Louis, Catherine; Jongh, Petra E. de
Source ACS Catalysis 7 (2017)9. - ISSN 2155-5435 - p. 5594 - 5603.
DOI https://doi.org/10.1021/acscatal.7b01424
Publication type Refereed Article in a scientific journal
Publication year 2017
Keyword(s) butadiene - catalyst - gold - selective hydrogenation - stability - supported nanoparticles
Abstract

Supported gold nanoparticles are highly selective catalysts for a range of both liquid-phase and gas-phase hydrogenation reactions. However, little is known about their stability during gas-phase catalysis and the influence of the support thereon. We report on the activity, selectivity, and stability of 2-4 nm Au nanoparticulate catalysts, supported on either TiO2 or SiO2, for the hydrogenation of 0.3% butadiene in the presence of 30% propene. Direct comparison of the stability of the Au catalysts was possible as they were prepared via the same method but on different supports. At full conversion of butadiene, only 0.1% of the propene was converted for both supported catalysts, demonstrating their high selectivity. The TiO2-supported catalysts showed a steady loss of activity, which was recovered by heating in air. We demonstrated that the deactivation was not caused by significant metal particle growth or strong metal-support interaction, but rather, it is related to the deposition of carbonaceous species under reaction conditions. In contrast, all the SiO2-supported catalysts were highly stable, with very limited formation of carbonaceous deposits. It shows that SiO2-supported catalysts, despite their 2-3 times lower initial activities, clearly outperform TiO2-supported catalysts within a day of run time. (Graph Presented).

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