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首页> 外文期刊>Catalysis science & technology >Ru/TiO2-catalysed hydrogenation of xylose: the role of the crystal structure of the support
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Ru/TiO2-catalysed hydrogenation of xylose: the role of the crystal structure of the support

机译：木糖的俄文/ TiO2-catalysed加氢:晶体结构的支持作用

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摘要

Effective dispersion of the active species over the support almost always guarantees high catalytic efficiency. To achieve this high dispersion, a favourable interaction of the active species with the support is crucial. We show here that the crystal structure of the titania support determines the interaction and consequently the nature of ruthenium particles deposited on the support. Similar crystal structures of RuO2 and rutile titania result in a good lattice matching and ensure a better interaction during the heating steps of catalyst synthesis. This helps maintain the initial good dispersion of the active species on the support also in the subsequent reduction step, leading to better activity and selectivity. This highlights the importance of understanding the physico-chemical processes during various catalyst preparation steps, because the final catalyst performance often depends on the type of intermediate structures formed during the preparation.
机译：有效的分散的活性物种几乎总是保证高的支持催化效率。分散,有利的交互的活跃的物种的支持是至关重要的。这里显示的晶体结构二氧化钛支持决定了交互和因此钌粒子的性质沉积在支持。RuO2和金红石二氧化钛结构导致良好的晶格匹配和确保一个更好的交互在加热步骤的催化剂合成。分散的活性物种的支持也在随后的减少一步,导致更好的活性和选择性。理解的重要性物理化学过程在各种催化剂制备的步骤,因为最后一个催化剂性能往往取决于类型的中间结构中形成的准备。

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