Ion-Exchange Fabrication of Hierarchical Al-MOF-Based Resin Catalysts for the Tandem Reaction.,ACS Applied Materials & Interfaces

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Ion-Exchange Fabrication of Hierarchical Al-MOF-Based Resin Catalysts for the Tandem Reaction.
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-07-17 , DOI: 10.1021/acsami.0c09544
Yanjing Hu ₁ , Jian Zhang ₁ , Zhe Wang ₁ , Hang Huo ₁ , Yanqiu Jiang ₁ , Xianzhu Xu ₁ , Kaifeng Lin ₁

Affiliation

Metal–organic framework (MOF)-supported macroscale resin catalysts, IRA900(xOH)-MIL-101(Al)–NH₂ (x means the concentration of NaOH), with spatially isolated antagonistic acid–base active sites were successfully synthesized through a novel strategy by ion exchange and in situ solvothermal methods. The hierarchical pore system of the as-prepared catalysts effectively promotes the mass transfer and contacts with catalytic active centers during the organic reactions. Therefore, the environmentally friendly catalysts exhibit excellent superior activity and stability in one-pot deacetalization–Knoevenagel condensation reaction, and the yield by optimal IRA900(0.2OH)-MIL-101(Al)–NH₂ reaches close to 99% after 5 h at 110 °C. Thanks to the millimeter-sized resin carrier and robust sphere morphology, the recycling of the as-prepared catalysts only requires natural sedimentation. This work presents an effective strategy to build low-toxic acid–base catalysts by combining the advantages of ion-exchange resins and functionalized MOF materials.

中文翻译：

铝-MOF-基树脂串联反应的离子交换制备。

通过有机合成成功地合成了金属-有机骨架（MOF）支撑的大型树脂催化剂IRA900（x OH）-MIL-101（Al）-NH ₂（x表示NaOH的浓度）。通过离子交换和原位溶剂热方法的新策略。所制备的催化剂的分级孔隙系统在有机反应期间有效地促进了传质并与催化活性中心接触。因此，这种环保型催化剂在单锅脱缩醛-Knoevenagel缩合反应中表现出优异的活性和稳定性，并且通过最佳IRA900（0.2OH）-MIL-101（Al）-NH ₂的收率在110°C下运行5 h后达到近99％。得益于毫米大小的树脂载体和稳健的球形形态，所制备催化剂的再循环仅需要自然沉降即可。这项工作结合了离子交换树脂和功能化MOF材料的优点，提出了构建低毒酸碱催化剂的有效策略。

更新日期：2020-08-12

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