MIL-100 and MIL-101 were synthesized and evacuated to generate a series of heterogeneous catalysts for isomerization of 1-butene. Their crystal structures and pore properties were characterized by PXRD and nitrogen adsorption–desorption techniques. These catalysts showed high catalytic activity for isomerization of 1-butene and high selectivities for 2-butene at room temperature. Moreover, the MIL-101 (Cr) catalyst evacuated at 200 °C exhibited the largest BET surface area of 2759 m² g^–1. At the same time, conversion of 1-butene and the highest selectivity to 2-butene were up to 93.38% and 98.08%, respectively. This work indicated that MOFs containing coordinatively unsaturated metal sites might be promising catalysts for olefin isomerization under mild conditions.

中文翻译：

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金属-有机骨架催化1-丁烯异构化为2-丁烯

合成并排空MIL-100和MIL-101，以生成一系列用于1-丁烯异构化的多相催化剂。通过PXRD和氮吸附-解吸技术表征了它们的晶体结构和孔性能。这些催化剂在室温下显示出对1-丁烯的异构化的高催化活性和对2-丁烯的高选择性。此外，在200°C抽空的MIL-101（Cr）催化剂的最大BET表面积为2759 m ² g ^–1。同时，1-丁烯的转化率和对2-丁烯的最高选择性分别达到93.38％和98.08％。这项工作表明，在温和条件下，含有配位不饱和金属位点的MOF可能是有希望的烯烃异构化催化剂。