The Cover Feature shows a highly efficient and stable Ru/ZSM‐5 catalyst for levulinic acid hydrogenation in water, which can be recycled at least 10 times (conv.>95%, yield>85%). In their Full Paper, B. Zhang et al. demonstrate that the excellent stability is a result of the higher content of tetrahedrally‐coordinated Al and the preferable pore connectivity in well‐crystallized ZSM‐5. The tetrahedral‐coordinated framework Al proved extremely helpful for the formation of strong metal–support interactions, which suppressed Ru aggregation and leaching in the acidic environment. Besides, the low pore volume and connectivity in ZSM‐5 significantly inhibited the formation of carbonaceous residues on the surface and channels. More information can be found in the Full Paper by B. Zhang et al. on page 3646 in Issue 19, 2017 (DOI: 10.1002/cctc.201700664).

中文翻译：

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封面文章：稳健的Ru / ZSM-5加氢催化剂：深入了解钌聚集和碳沉积的抗性（ChemCatChem 19/2017）

Cover Feature展示了一种高效，稳定的Ru / ZSM-5催化剂，用于水中乙酰丙酸的加氢，可循环使用至少10次（转化率> 95％，产率> 85％）。B. Zhang等在其论文全文中。证明了优异的稳定性是由于良好结晶的ZSM-5中四面体配位的Al含量较高和孔连通性更好所致。四面体配位的骨架Al被证明对形成强的金属-载体相互作用非常有帮助，这种相互作用抑制了Ru的聚集和在酸性环境中的浸出。此外，ZSM-5的低孔体积和连通性显着抑制了表面和通道上碳质残留物的形成。可以在B. Zhang等人的论文全文中找到更多信息。上2017年第19期第3646页（DOI：10.1002 / cctc.201700664）。