A metal–organic framework (MOF)‐based catalyst, chromium hydroxide/MIL‐101(Cr), was prepared by a one‐pot synthesis method. The combination of chromium hydroxide particles on and within Lewis acidic MIL‐101 accomplishes highly selective conversion of glucose to fructose in the presence of ethanol, matching the performance of optimized Sn‐containing Lewis acidic zeolites. Differently from zeolites, NMR spectroscopy studies with isotopically labeled molecules demonstrate that isomerization of glucose to fructose on this catalyst, proceeds predominantly via a proton transfer mechanism.

中文翻译：

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氢氧化铬/ MIL-101（Cr）MOF复合催化剂及其在葡萄糖选择性异构化成果糖中的用途

通过单锅合成方法制备了基于金属-有机骨架（MOF）的氢氧化铬/ MIL-101（Cr）催化剂。Lewis酸性MIL-101上和内部的氢氧化铬颗粒的结合可在乙醇存在下实现葡萄糖向果糖的高度选择性转化，与优化的含Sn路易斯酸性沸石的性能相匹配。与沸石不同，使用同位素标记的分子进行的NMR光谱研究表明，该催化剂上葡萄糖的异构化为果糖主要通过质子转移机制进行。