Hydrogenation Size-Selective Pt/Hollow Beta Catalysts

被引：9

作者：

Prates, Ana Rita Morgado ^{[1
]}

Meunier, Frederic ^{[1
]}

Dodin, Mathias ^{[2
]}

Franco, Raquel Martinez ^{[2
]}

Farrusseng, David ^{[1
]}

Tuel, Alain ^{[1
]}

机构：

[1] IRCELYON, 2 Ave Albert Einstein, F-69626 Villeurbanne, France

[2] IFP Energies Nouvelles, Rond Point Echangeur Solaize BP3, F-69360 Solaize, France

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2019年 / 25卷 / 12期

关键词：

heterogenous catalysis; metal nanoparticles; selective hydrogenation; size selectivity; zeolites; METAL NANOPARTICLES; ZEOLITE; CRYSTALS; SILICALITE-1; DESILICATION; DISSOLUTION;

D O I：

10.1002/chem.201805041

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The aim of the present work is to synthesize a zeolite-based catalyst with a hollow morphology and highly dispersed metal nanoparticles (NPs) encapsulated inside the zeolite micropores. For this purpose, we have studied a treatment using tetraalkylammonium (TAA) bromides for the selective removal of a large Pt particle from the outer surface of a hollow Beta zeolite. TEM analysis reveals that we succeeded in the synthesis of a hollow beta zeolite single crystal with encapsulated particles, with a high dispersion of 50-60%. The molecular-sieve-type mechanism of the obtained catalysts was evaluated in the model reaction of toluene and mesitylene catalytic hydrogenation. Thanks to the high dispersion. a 10-fold activity enhancement has been obtained with respect to hollow beta zeolites with encapsulated NPs recently described in the literature.

引用

页码：2972 / 2977

页数：6

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