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Optimization of the catalytic activity of gold nanoparticles immobilized on different types of carbon for benzyl alcohol oxidation
Abstract:   (214 Views)
The effect of applying different types of carbon substances including: Norit® activated carbon samples with different physical shapes (i.e., powder, granola and granola, which has powdered), Vulcan carbon (V), CMK-3 mesoporous carbon (C3), CMK-8 mesoporous carbon (C8) and also NCCR-41 mesoporous carbon (C41) as nanocatalysts support on the catalytic activity of small gold nanoparticles (Au101) was studied. These gold nanocatalysts were activated by hot toluene (W) and then heated by constant air flow (S) or under vacuum (V) at 100 °C for 3 h. The highest catalytic activity was exhibited by Au101/C8 (W+S) nanocatalysts at the rate of 96% with approximately 3.3 nm particle size. However, Au101/C41 (wash with hot toluene and then heated under vacuum at 100 °C for 3 h) showed the highest selectivity of methyl benzoate as the major product (S%: 88) during a 3 h reaction time with an approximate 2.6 nm gold particle size. It appears that, the type of carbon support can be considered as an important player in the oxidation of benzyl alcohol in the presence of gold nanocatalysts in addition to the type of activation procures
Keywords: Carbon support, gold nanoparticles, benzyl alcohol oxidation, catalytic activation, nanocatalysts
Type of Study: Research | Subject: Tile, Porcelain, Glaze, Pigment and Ink
Received: 2021/09/7 | Accepted: 2021/09/1
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نشریه علم و مهندسی سرامیک Iranian Journal of Ceramic Science & Engineering
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