The Cover Feature shows the epoxidation of 1‐butene in micropores and macropores of TS‐1. In their Full Paper, Y. Zuo et al. reported the posttreatment of TS‐1 zeolite with ethanolamine (EOA) and triethanolamine (TEOA) and their different effects on the porosity and Ti coordination states. EOA treatment can dissolve the framework Si, [SiO₄], on the external surface of TS‐1, generating some macropores. TEOA serves as structure‐directing agent to form MFI topology, in addition to the dissolution of [SiO₄], and promotes the recrystallization of [SiO₄], forming new TS‐1 particles over the external surface. The recrystallization stabilizes the structure of TS‐1 and maintains more framework Ti and intercrystal space, which leads to an enhanced catalyst stability. More information can be found in the Full Paper by Y. Zuo et al.

中文翻译：

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封面人物：碱处理中重结晶对1-丁烯环氧化催化活性的作用（ChemCatChem 24/2020）

覆盖特征显示1-丁烯在TS-1的微孔和大孔中的环氧化。在他们的论文全文中，Y。Zuo等人。报道了用乙醇胺（EOA）和三乙醇胺（TEOA）对TS-1沸石进行后处理，以及它们对孔隙率和Ti配位态的不同影响。EOA处理可以溶解TS-1外表面的骨架Si [SiO ₄ ]，产生一些大孔。TEOA用作结构导向剂，以形成MFI拓朴结构中，除了[二氧化硅的溶解₄ ]，促进再结晶〔固定相SiO ₄]，在外表面上形成新的TS-1粒子。重结晶可稳定TS-1的结构并保持更多的骨架Ti和晶间空间，从而提高催化剂的稳定性。可以在Y. Zuo等人的论文全文中找到更多信息。