Immobilized PVA-stabilized gold nanoparticles on silica show an unusual selectivity in the hydrogenation of cinnamaldehyde

Immobilized PVA-stabilized gold nanoparticles on silica show an unusual selectivity in the hydrogenation of cinnamaldehyde
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二氧化硅上固定 PVA 稳定的金纳米粒子在肉桂醛氢化中表现出不同寻常的选择性

DOI:
10.1016/j.catcom.2008.03.025
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发表时间:
2008-06
影响因子:
3.7
通讯作者:
--
中科院分区:
化学3区
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--
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这项工作首次报道了SiO2上固定的PVA稳定的金纳米颗粒(AuNPs)在150-180°C下在肉桂醛(CAL)的CC键处高度选择性氢化的“不寻常”性质,揭示了从CAL选择性氢化肉桂醛(HCAL)的催化途径。当相同的胶体金纳米颗粒固定在ZrO 2上时,在相同的反应条件下,它们在CAL分子的CC和CO键上实现竞争性氢化。
This work reports for the first time an “unusual” property of immobilized PVA-stabilized gold nanoparticles (AuNPs) on SiO2for highly selective hydrogenation at the CC bond of cinnamaldehyde (CAL) at 150–180°C, uncovering a catalytic route for selective hydrocinnamaldehyde (HCAL) production from CAL. When the same colloidal gold nanoparticles are immobilized on ZrO2, they effect competitive hydrogenations at both CC and CO bonds of the CAL molecules under identical reaction conditions.
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