Liquid Metal-Assisted Acylation of Phenols over Zeolite Catalysts,ACS Catalysis

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Liquid Metal-Assisted Acylation of Phenols over Zeolite Catalysts
ACS Catalysis ( IF 11.3 ) Pub Date : 2024-05-06 , DOI: 10.1021/acscatal.4c00104
Yong Zhou _{1,

2} , Geqian Fang ₁ , Deizi Peron ₁ , Maya Marinova ₃ , Vladimir Zholobenko _{4,

5} , Andrei Y. Khodakov ₁ , Vitaly V. Ordomsky ₁

Affiliation

The selection of a solvent for the reaction is highly important in catalysis since it profoundly affects the catalytic activity, selectivity, and stability. However, the costly separation of solvent from the products hinders the application of solvents in industry. In this study, we propose liquid metals to regulate the catalytic performance of nonmetallic zeolite catalysts. The catalytic reactions of phenol acylation over a heterogeneous acidic BEA zeolite were conducted in the presence of liquid metal alloys above their melting points. The presence of liquid metals in the reaction medium leads to a dramatic change of the selectivity toward ester formation in the phenol acylation reactions at high stability of the catalyst. The observed phenomena were attributed to a strong interaction of the liquid metal with the catalysts, resulting in the modification of the strength of the zeolite acid sites and a decrease in the residence time of the products on the surface of the catalyst.

中文翻译：

沸石催化剂上液态金属辅助苯酚酰化

反应溶剂的选择在催化中非常重要，因为它深刻影响催化活性、选择性和稳定性。然而，从产品中分离溶剂的成本高昂，阻碍了溶剂在工业中的应用。在这项研究中，我们提出液态金属来调节非金属沸石催化剂的催化性能。苯酚酰化在非均相酸性 BEA 沸石上的催化反应是在高于其熔点的液态金属合金存在下进行的。反应介质中液态金属的存在导致苯酚酰化反应中酯形成的选择性发生显着变化，且催化剂具有高稳定性。观察到的现象归因于液态金属与催化剂的强烈相互作用，导致沸石酸位点强度的改变以及产物在催化剂表面的停留时间的减少。

更新日期：2024-05-06

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