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Fast Catalytic Esterification Using a Hydrophobized Zr‐MOF with Acidic Ionic Liquid Linkers
ChemistrySelect ( IF 1.9 ) Pub Date : 2020-01-20 , DOI: 10.1002/slct.201904212 Zichen Xu 1, 2 , Guoying Zhao 1 , Niklas Hedin 1, 3 , Mengmeng Xu 1 , Jiahui Liu 1 , Latif Ullah 1, 2 , Suojiang Zhang 1
ChemistrySelect ( IF 1.9 ) Pub Date : 2020-01-20 , DOI: 10.1002/slct.201904212 Zichen Xu 1, 2 , Guoying Zhao 1 , Niklas Hedin 1, 3 , Mengmeng Xu 1 , Jiahui Liu 1 , Latif Ullah 1, 2 , Suojiang Zhang 1
Affiliation
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A Zr‐MOF with an acidic ionic liquid linker ([bpyH][CF3SO3]) were externally hydrophobized with polydimethylsiloxane (PDMS) via a vapor deposition method (denoted as PDMS@UiO‐67‐CF3SO3). The morphology of UiO‐67‐CF3SO3 was well maintained after PDMS coating, and PDMS had little effect on the chemical properties of UiO‐67‐CF3SO3, while the hydrophobicity of the surface of UiO‐67‐CF3SO3 was improved greatly as demonstrated by water contact angle measurement. The derived hydrophobized PDMS@UiO‐67‐CF3SO3 exhibited excellent catalytic performance in the esterification of acetic acid and isooctyl alcohol, it only needed 4 h to reach the reaction equilibrium, while for UiO‐67‐CF3SO3, it was 18 h. The decrease in reaction time was mainly attributed to the accelerated the removal of water and isooctyl acetate, resulting the increase rate in the forward reaction. In addition, in the other esterification of acids and alcohols, PDMS@UiO‐67‐CF3SO3 also showed good catalytic performance.
中文翻译：
使用疏水性Zr-MOF和酸性离子液体连接剂的快速催化酯化反应
通过气相沉积法（PDMS @ UiO-67-CF 3 SO 3）用聚二甲基硅氧烷（PDMS）对带有酸性离子液体接头（[bpyH] [CF 3 SO 3 ]）的Zr-MOF进行外部疏水化处理。PDMS涂布后UiO-67-CF 3 SO 3的形态保持良好，PDMS对UiO-67-CF 3 SO 3的化学性质影响很小，而UiO-67-CF 3表面的疏水性如水接触角测量所证明的，SO 3大大改善。衍生的疏水化PDMS @ UiO-67-CF 3 SO 3在乙酸和异辛醇的酯化反应中表现出优异的催化性能，仅需4小时即可达到反应平衡，而对于UiO-67-CF 3 SO 3则为18小时。反应时间的减少主要是由于加速了水和乙酸异辛酯的去除，导致了正向反应速率的提高。此外，在酸和醇的其他酯化反应中，PDMS @ UiO-67-CF 3 SO 3也显示出良好的催化性能。
更新日期：2020-01-21
中文翻译：
使用疏水性Zr-MOF和酸性离子液体连接剂的快速催化酯化反应
通过气相沉积法（PDMS @ UiO-67-CF 3 SO 3）用聚二甲基硅氧烷（PDMS）对带有酸性离子液体接头（[bpyH] [CF 3 SO 3 ]）的Zr-MOF进行外部疏水化处理。PDMS涂布后UiO-67-CF 3 SO 3的形态保持良好，PDMS对UiO-67-CF 3 SO 3的化学性质影响很小，而UiO-67-CF 3表面的疏水性如水接触角测量所证明的，SO 3大大改善。衍生的疏水化PDMS @ UiO-67-CF 3 SO 3在乙酸和异辛醇的酯化反应中表现出优异的催化性能，仅需4小时即可达到反应平衡，而对于UiO-67-CF 3 SO 3则为18小时。反应时间的减少主要是由于加速了水和乙酸异辛酯的去除，导致了正向反应速率的提高。此外，在酸和醇的其他酯化反应中，PDMS @ UiO-67-CF 3 SO 3也显示出良好的催化性能。
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