Understanding the molecular basis for the controlled design of ruthenium nanoparticles in microporous aluminophosphates

Understanding the molecular basis for the controlled design of ruthenium nanoparticles in microporous aluminophosphates
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了解微孔铝磷酸盐中钌纳米粒子受控设计的分子基础

DOI:
10.1039/c6me00061d
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发表时间:
2016
影响因子:
3.6
通讯作者:
Potter M
Potter M
中科院分区:
工程技术3区
文献类型:
--
作者:
Potter M

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在微孔框架内控制纳米颗粒催化剂的结构特性是一个主要的挑战。利用原位x射线吸收精细结构(XAFS)光谱,我们详细研究了活化参数对纳米多孔磷酸铝(RuAlPO-5)结构范围内钌颗粒性质的影响。这些原位研究证实,控制退火条件可以调整特定钌种类的形成,从而改变环己烷氧化成KA油(环己酮和环己醇的1:1混合物)的催化性能,KA油是尼龙-6和尼龙-6,6的前驱体。
Controlling the structural properties of nanoparticle catalysts within a microporous framework is a major challenge. Using in situ X-ray absorption fine structure (XAFS) spectroscopy we detail the influence of activation parameters on the nature of ruthenium particles that are located within the confines of a nanoporous aluminophosphate (RuAlPO-5) architecture. These in situ studies confirm that controlled annealing conditions can tailor the formation of specific ruthenium species, which alter the catalytic performance towards the oxidation of cyclohexane to KA oil (a 1 : 1 mixture of cyclohexanone and cyclohexanol), the precursor for Nylon-6 and Nylon-6,6.
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