High catalytic activity for CO oxidation of gold nanoparticles confined in acidic support Al-SBA-15 at low temperatures

Chia Wen Chiang, Aiqin Wang, Ben Zu Wan, Chung Yuan Mou

研究成果: 雜誌貢獻文章同行評審

100 引文 斯高帕斯(Scopus)

摘要

While there is a large number of recent studies of Au nanocatalysts supported on metal oxides, low-temperature CO oxidation under an acidic environment has not yet been accomplished. Over a novel acidic Al-SBA-15 support, uniformly distributed gold nanoparticles with sizes ∼2.7 nm were obtained by a successive procedure of aminosilane grafting, gold adsorption-reduction, and then high-temperature hydrogen treatment. The catalyst system, Au@Al-SBA-15, exhibits extraordinarily high activity for CO oxidation at 80°C. By varying the Si/Al ratio of the support, the dependence of the catalytic activity on the support Si/Al ratio was found in the CO oxidation reaction.

原文英語
頁(從 - 到)18042-18047
頁數6
期刊Journal of Physical Chemistry B
109
發行號38
DOIs
出版狀態已發佈 - 9月 29 2005
對外發佈

ASJC Scopus subject areas

  • 物理與理論化學
  • 表面、塗料和薄膜
  • 材料化學

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