Journal
POWDER TECHNOLOGY
Volume 210, Issue 2, Pages 115-121Publisher
ELSEVIER
DOI: 10.1016/j.powtec.2011.03.004
Keywords
Nanocomposite; Chemical synthesis; Microstructure; Catalytic properties
Categories
Funding
- Chinese Ministry of Education [210230]
- National Natural Science Foundation of Gansu Province [1010RJZA168]
- Research projects for National Colleges' graduate tutor of Gansu Province [1011-02]
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Pd nanoparticles supported in mesoporous silica SBA-15 (or Pd/SBA-15 nanocomposites) were prepared by ion-exchange with cationic Pd precursor in an alkaline solution on an uncalcined silica. The high Pd loading in these nanocomposites can be achieved up to 5.21 wt.% by adjusting the pH value of the solution. The surface area and the pore volume decrease with increasing Pd loading. The Pd nanoparticles equal to or smaller than 6 nm in size in the nanocomposites are distributed in the channels of the mesoporous SBA-15. The Pd/SBA-15 nanocomposites exhibit excellent catalytic activities and high reuse ability in air for the Heck carbon-carbon coupling reactions. (C) 2011 Elsevier B.V. All rights reserved.
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