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Cited by 267

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Dendrimer Templated Synthesis of One Nanometer Rh and Pt Particles Supported on Mesoporous Silica: Catalytic Activity for Ethylene and Pyrrole Hydrogenation

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Huang, Wenyu, Kuhn, John N., Tsung, Chia-Kuang, Zhang, Yawen, Habas, Susan E., Yang, Peidong, Somorjai, Gabor A.·2008·Nano Letters

Abstract

Monodisperse rhodium (Rh) and platinum (Pt) nanoparticles as small as approximately 1 nm were synthesized within a fourth generation polyaminoamide (PAMAM) dendrimer, a hyperbranched polymer, in aqueous solution and immobilized by depositing onto a high-surface-area SBA-15 mesoporous support. X-ray photoelectron spectroscopy indicated that the as-synthesized Rh and Pt nanoparticles were mostly oxidized. Catalytic activity of the SBA-15 supported Rh and Pt nanoparticles was studied with ethylene hydrogenation at 273 and 293 K in 10 torr of ethylene and 100 torr of H 2 after reduction (76 torr of H 2 mixed with 690 torr of He) at different temperatures. Catalysts were active without removing the dendrimer capping but reached their highest activity after hydrogen reduction at a moderate temperature (423 K). When treated at a higher temperature (473, 573, and 673 K) in hydrogen, catalytic activity decreased. By using the same treatment that led to maximum ethylene hydrogenation activity, catalytic activity was also evaluated for pyrrole hydrogenation.

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Metadata

Authors
Huang, W., Kuhn, J. N., Tsung, C.-K., Zhang, Y., Habas, S. E., Yang, P., & Somorjai, G. A.
Venue
Nano Letters
Published
2008-06-11
Volume
8
Issue
7
Pages
2027-2034
ISSN
  • 1530-6984 (ISSN-L)
  • 1530-6992
OpenAlex
W1984646865
Cited by
267
References
1
FWCI
11.06
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Dendrimer Templated Synthesis of One Nanometer Rh and Pt Particles Supported on Mesoporous Silica: Catalytic Activity for Ethylene and Pyrrole Hydrogenation. https://app.cochat.ai/papers/10.1021/nl801325m
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Huang, W., Kuhn, J. N., Tsung, C.-K., Zhang, Y., Habas, S. E., Yang, P., & Somorjai, G. A. (2008). Dendrimer Templated Synthesis of One Nanometer Rh and Pt Particles Supported on Mesoporous Silica: Catalytic Activity for Ethylene and Pyrrole Hydrogenation. Nano Letters. https://doi.org/10.1021/nl801325m

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