TY - JOUR
T1 - Encapsulation of bimetallic metal nanoparticles into robust zirconium-based metal–organic frameworks
T2 - Evaluation of the catalytic potential for size-selective hydrogenation
AU - Rösler, Christoph
AU - Dissegna, Stefano
AU - Rechac, Victor L.
AU - Kauer, Max
AU - Guo, Penghu
AU - Turner, Stuart
AU - Ollegott, Kevin
AU - Kobayashi, Hirokazu
AU - Yamamoto, Tomokazu
AU - Peeters, Daniel
AU - Wang, Yuemin
AU - Matsumura, Syo
AU - van Tendeloo, Gustaaf
AU - Kitagawa, Hiroshi
AU - Muhler, Martin
AU - Llabrés I Xamena, Francesc X.
AU - Fischer, Roland A.
N1 - Publisher Copyright:
© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
PY - 2017/3/13
Y1 - 2017/3/13
N2 - The realization of metal nanoparticles (NPs) with bimetallic character and distinct composition for specific catalytic applications is an intensively studied field. Due to the synergy between metals, most bimetallic particles exhibit unique properties that are hardly provided by the individual monometallic counterparts. However, as small-sized NPs possess high surface energy, agglomeration during catalytic reactions is favored. Sufficient stabilization can be achieved by confinement of NPs in porous support materials. In this sense, metal–organic frameworks (MOFs) in particular have gained a lot of attention during the last years; however, encapsulation of bimetallic species remains challenging. Herein, the exclusive embedding of preformed core–shell PdPt and RuPt NPs into chemically robust Zr-based MOFs is presented. Microstructural characterization manifests partial retention of the core–shell systems after successful encapsulation without harming the crystallinity of the microporous support. The resulting chemically robust NP@UiO-66 materials exhibit enhanced catalytic activity towards the liquidphase hydrogenation of nitrobenzene, competitive with commercially used Pt on activated carbon, but with superior size-selectivity for sterically varied substrates.
AB - The realization of metal nanoparticles (NPs) with bimetallic character and distinct composition for specific catalytic applications is an intensively studied field. Due to the synergy between metals, most bimetallic particles exhibit unique properties that are hardly provided by the individual monometallic counterparts. However, as small-sized NPs possess high surface energy, agglomeration during catalytic reactions is favored. Sufficient stabilization can be achieved by confinement of NPs in porous support materials. In this sense, metal–organic frameworks (MOFs) in particular have gained a lot of attention during the last years; however, encapsulation of bimetallic species remains challenging. Herein, the exclusive embedding of preformed core–shell PdPt and RuPt NPs into chemically robust Zr-based MOFs is presented. Microstructural characterization manifests partial retention of the core–shell systems after successful encapsulation without harming the crystallinity of the microporous support. The resulting chemically robust NP@UiO-66 materials exhibit enhanced catalytic activity towards the liquidphase hydrogenation of nitrobenzene, competitive with commercially used Pt on activated carbon, but with superior size-selectivity for sterically varied substrates.
KW - Heterogeneous catalysis
KW - Hydrogenation
KW - Metalorganic frameworks
KW - Nanoparticles
KW - Nanostructures
UR - http://www.scopus.com/inward/record.url?scp=85012044247&partnerID=8YFLogxK
U2 - 10.1002/chem.201603984
DO - 10.1002/chem.201603984
M3 - Article
C2 - 27922204
AN - SCOPUS:85012044247
SN - 0947-6539
VL - 23
SP - 3583
EP - 3594
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
IS - 15
ER -