Pd and Pd-CuO nanoparticles in hollow silicalite-1 single crystals for enhancing selectivity and activity for the Suzuki-Miyaura reaction

Chengyi Dai, Xinmin Li, Anfeng Zhang, Chun Liu, Chunshan Song, Xinwen Guo

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Pd and Pd-CuO nanoparticles were successfully encapsulated in hollow silicalite-1 single crystals by tetrapropylammonium hydroxide (TPAOH) hydrothermal treatment with an "impregnation-dissolution-recrystallization" process. The size and number of particles in the hollow zeolite depended mainly on the nature of the metal. For palladium, the palladium nanoparticles easily aggregated into larger particles in the hydrothermal process, which displays excellent substrate selectivity for the meta- and para-substituted aryl bromides in the Suzuki-Miyaura reaction. For Pd-CuO binary metals (oxide), introducing copper oxide prevents aggregation of palladium, which shows about 3 times higher activity than encapsulated single Pd catalyst for the above reaction. The strategy using a hollow zeolite crystal as a support is a more reliable method for preparing multi-metallic (oxide) catalysts with well-dispersed nanoparticles.

Original languageEnglish (US)
Pages (from-to)40297-40302
Number of pages6
JournalRSC Advances
Volume5
Issue number50
DOIs
StatePublished - Jan 1 2015

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Palladium
Zeolites
Single crystals
Nanoparticles
Metals
Catalysts
Oxides
Copper oxides
Bromides
Impregnation
Dissolution
Agglomeration
Crystallization
Crystals
Substrates

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Dai, Chengyi ; Li, Xinmin ; Zhang, Anfeng ; Liu, Chun ; Song, Chunshan ; Guo, Xinwen. / Pd and Pd-CuO nanoparticles in hollow silicalite-1 single crystals for enhancing selectivity and activity for the Suzuki-Miyaura reaction. In: RSC Advances. 2015 ; Vol. 5, No. 50. pp. 40297-40302.
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Pd and Pd-CuO nanoparticles in hollow silicalite-1 single crystals for enhancing selectivity and activity for the Suzuki-Miyaura reaction. / Dai, Chengyi; Li, Xinmin; Zhang, Anfeng; Liu, Chun; Song, Chunshan; Guo, Xinwen.

In: RSC Advances, Vol. 5, No. 50, 01.01.2015, p. 40297-40302.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Pd and Pd-CuO nanoparticles in hollow silicalite-1 single crystals for enhancing selectivity and activity for the Suzuki-Miyaura reaction

AU - Dai, Chengyi

AU - Li, Xinmin

AU - Zhang, Anfeng

AU - Liu, Chun

AU - Song, Chunshan

AU - Guo, Xinwen

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AB - Pd and Pd-CuO nanoparticles were successfully encapsulated in hollow silicalite-1 single crystals by tetrapropylammonium hydroxide (TPAOH) hydrothermal treatment with an "impregnation-dissolution-recrystallization" process. The size and number of particles in the hollow zeolite depended mainly on the nature of the metal. For palladium, the palladium nanoparticles easily aggregated into larger particles in the hydrothermal process, which displays excellent substrate selectivity for the meta- and para-substituted aryl bromides in the Suzuki-Miyaura reaction. For Pd-CuO binary metals (oxide), introducing copper oxide prevents aggregation of palladium, which shows about 3 times higher activity than encapsulated single Pd catalyst for the above reaction. The strategy using a hollow zeolite crystal as a support is a more reliable method for preparing multi-metallic (oxide) catalysts with well-dispersed nanoparticles.

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