Influence of Al-clustering in the catalytic activity of layered double hydroxides for the Baeyer-Villiger oxidation

IF 5.3 2区地球科学 Q2 CHEMISTRY, PHYSICAL Applied Clay Science Pub Date : 2024-08-28 DOI:10.1016/j.clay.2024.107542

Alvaro Seijas-Da Silva , Víctor Oestreicher , José Rafael Ruiz , Daniel Cosano , Gonzalo Abellán

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Abstract

The utilization of efficient and environmentally friendly heterogeneous catalysts in the Baeyer-Villiger (BV) reaction gained significant importance in the field of green chemistry. In this study, the catalytic properties of magnesium-aluminium hydrotalcite in the BV oxidation of cyclic ketones using H₂O₂ were investigated. The research focused on the influence of two different synthetic routes on the clustering of aluminium centers and its impact on catalytic activity in the Baeyer-Villiger reaction. Surprisingly, the catalyst with a high degree of aluminium clustering exhibited superior performance compared to the ordered aluminium solid. Moreover, the most active catalyst displayed sustained activity even after three successive reaction cycles. This study presented the first report on the influence of trivalent metals in the BV reaction, thus opening up a new avenue for further exploration of such catalysts in the context of Baeyer-Villiger oxidation.

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铝簇对层状双氢氧化物在贝耶尔-维利格氧化作用中催化活性的影响

在拜尔-维利格（BV）反应中使用高效且环境友好的异相催化剂在绿色化学领域具有重要意义。本研究考察了镁铝氢铝酸盐在使用 H2O2 进行环酮 BV 氧化反应中的催化特性。研究的重点是两种不同合成路线对铝中心团聚的影响及其对 Baeyer-Villiger 反应催化活性的影响。令人惊讶的是，与有序铝固体相比，铝聚簇程度高的催化剂表现出更优越的性能。此外，活性最高的催化剂在连续进行三个反应循环后仍能保持活性。本研究首次报道了三价金属在 BV 反应中的影响，从而为进一步探索此类催化剂在拜耳法-滴定法氧化过程中的应用开辟了一条新途径。

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来源期刊

Applied Clay Science 地学-矿物学

CiteScore

10.30

自引率

10.70%

发文量

289

审稿时长

39 days

期刊介绍： Applied Clay Science aims to be an international journal attracting high quality scientific papers on clays and clay minerals, including research papers, reviews, and technical notes. The journal covers typical subjects of Fundamental and Applied Clay Science such as: • Synthesis and purification • Structural, crystallographic and mineralogical properties of clays and clay minerals • Thermal properties of clays and clay minerals • Physico-chemical properties including i) surface and interface properties; ii) thermodynamic properties; iii) mechanical properties • Interaction with water, with polar and apolar molecules • Colloidal properties and rheology • Adsorption, Intercalation, Ionic exchange • Genesis and deposits of clay minerals • Geology and geochemistry of clays • Modification of clays and clay minerals properties by thermal and physical treatments • Modification by chemical treatments with organic and inorganic molecules(organoclays, pillared clays) • Modification by biological microorganisms. etc...