Taming the stability of Pd active phases through a compartmentalizing strategy toward nanostructured catalyst supports

Xinwei Yang; Qing Li; Erjun Lu; Zhiqiang Wang; Xueqing Gong; Zhiyang Yu; Yun Guo; Li Wang; Yanglong Guo; Wangcheng Zhan; Jinshui Zhang; Sheng Dai

doi:10.1038/s41467-019-09662-4

Taming the stability of Pd active phases through a compartmentalizing strategy toward nanostructured catalyst supports

Xinwei Yang, Qing Li, Erjun Lu, Zhiqiang Wang, Xueqing Gong, Zhiyang Yu, Yun Guo, Li Wang, Yanglong Guo, Wangcheng Zhan, Jinshui Zhang, Sheng Dai

Research output: Contribution to journal › Article › peer-review

210 Scopus citations

Abstract

The design and synthesis of robust sintering-resistant nanocatalysts for high-temperature oxidation reactions is ubiquitous in many industrial catalytic processes and still a big challenge in implementing nanostructured metal catalyst systems. Herein, we demonstrate a strategy for designing robust nanocatalysts through a sintering-resistant support via compartmentalization. Ultrafine palladium active phases can be highly dispersed and thermally stabilized by nanosheet-assembled γ-Al₂O₃ (NA-Al₂O₃) architectures. The NA-Al₂O₃ architectures with unique flowerlike morphologies not only efficiently suppress the lamellar aggregation and irreversible phase transformation of γ-Al₂O₃ nanosheets at elevated temperatures to avoid the sintering and encapsulation of metal phases, but also exhibit significant structural advantages for heterogeneous reactions, such as fast mass transport and easy access to active sites. This is a facile stabilization strategy that can be further extended to improve the thermal stability of other Al₂O₃-supported nanocatalysts for industrial catalytic applications, in particular for those involving high-temperature reactions.

Original language	English
Article number	1611
Journal	Nature Communications
Volume	10
Issue number	1
DOIs	https://doi.org/10.1038/s41467-019-09662-4
State	Published - Dec 1 2019
Externally published	Yes

Funding

W.C.Z. and Y.L.G. appreciate the financial support from the National Key Research and Development Program of China (2016YFC0204300), the National Natural Science Foundation of China (21577034), the 111 project (B08021) and Shanghai Pujiang Program (17PJD012). Y.G. appreciates the National Natural Science Foundation of China (21577035). Z.Y.Y. appreciates the National Natural Science Foundation of China (51871058 and 51701170). S.D. were supported by the US Department of Energy, Office of Science, Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division.

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title = "Taming the stability of Pd active phases through a compartmentalizing strategy toward nanostructured catalyst supports",

abstract = "The design and synthesis of robust sintering-resistant nanocatalysts for high-temperature oxidation reactions is ubiquitous in many industrial catalytic processes and still a big challenge in implementing nanostructured metal catalyst systems. Herein, we demonstrate a strategy for designing robust nanocatalysts through a sintering-resistant support via compartmentalization. Ultrafine palladium active phases can be highly dispersed and thermally stabilized by nanosheet-assembled γ-Al2O3 (NA-Al2O3) architectures. The NA-Al2O3 architectures with unique flowerlike morphologies not only efficiently suppress the lamellar aggregation and irreversible phase transformation of γ-Al2O3 nanosheets at elevated temperatures to avoid the sintering and encapsulation of metal phases, but also exhibit significant structural advantages for heterogeneous reactions, such as fast mass transport and easy access to active sites. This is a facile stabilization strategy that can be further extended to improve the thermal stability of other Al2O3-supported nanocatalysts for industrial catalytic applications, in particular for those involving high-temperature reactions.",

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AU - Yu, Zhiyang

AU - Guo, Yun

AU - Wang, Li

AU - Guo, Yanglong

AU - Zhan, Wangcheng

AU - Zhang, Jinshui

AU - Dai, Sheng

PY - 2019/12/1

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N2 - The design and synthesis of robust sintering-resistant nanocatalysts for high-temperature oxidation reactions is ubiquitous in many industrial catalytic processes and still a big challenge in implementing nanostructured metal catalyst systems. Herein, we demonstrate a strategy for designing robust nanocatalysts through a sintering-resistant support via compartmentalization. Ultrafine palladium active phases can be highly dispersed and thermally stabilized by nanosheet-assembled γ-Al2O3 (NA-Al2O3) architectures. The NA-Al2O3 architectures with unique flowerlike morphologies not only efficiently suppress the lamellar aggregation and irreversible phase transformation of γ-Al2O3 nanosheets at elevated temperatures to avoid the sintering and encapsulation of metal phases, but also exhibit significant structural advantages for heterogeneous reactions, such as fast mass transport and easy access to active sites. This is a facile stabilization strategy that can be further extended to improve the thermal stability of other Al2O3-supported nanocatalysts for industrial catalytic applications, in particular for those involving high-temperature reactions.

AB - The design and synthesis of robust sintering-resistant nanocatalysts for high-temperature oxidation reactions is ubiquitous in many industrial catalytic processes and still a big challenge in implementing nanostructured metal catalyst systems. Herein, we demonstrate a strategy for designing robust nanocatalysts through a sintering-resistant support via compartmentalization. Ultrafine palladium active phases can be highly dispersed and thermally stabilized by nanosheet-assembled γ-Al2O3 (NA-Al2O3) architectures. The NA-Al2O3 architectures with unique flowerlike morphologies not only efficiently suppress the lamellar aggregation and irreversible phase transformation of γ-Al2O3 nanosheets at elevated temperatures to avoid the sintering and encapsulation of metal phases, but also exhibit significant structural advantages for heterogeneous reactions, such as fast mass transport and easy access to active sites. This is a facile stabilization strategy that can be further extended to improve the thermal stability of other Al2O3-supported nanocatalysts for industrial catalytic applications, in particular for those involving high-temperature reactions.

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Taming the stability of Pd active phases through a compartmentalizing strategy toward nanostructured catalyst supports

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