A Bipyridine-Based Conjugated Microporous Polymer for the Ir-Catalyzed Dehydrogenation of Formic Acid
A Bipyridine-Based Conjugated Microporous Polymer for the Ir-Catalyzed Dehydrogenation of Formic Acid
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DOI：
10.1021/acscatal.7b02425
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发表时间：
2017-12-01
期刊：
影响因子：
12.9
通讯作者：
Palkovits, Regina
中科院分区：
文献类型：
--
作者：
Broicher, Cornelia;Foit, Severin R.;Palkovits, Regina
甲酸被认为是一种很有前途的储能介质，它的选择性脱氢可以生成高纯度的H-2。本文报道了一种负载[Cp*IrCl2](2)的联吡啶基共轭微孔聚合物（CMP），用于甲酸的无碱水溶液脱氢成H-2/CO2。该催化剂在温度超过130℃，甲酸浓度高达10 m时表现出高活性和选择性。回收试验表明，在六次运行中，Ir浸出率低，活性逐渐增加，气相CO含量低，约为138 ppm。使用0.1 wt %的Ir负载，获得了高达123894 h（-1）的tof。
Formic acid is considered a promising energy storage medium, and its selective dehydrogenation enables the generation of high-purity H-2. Herein we report a bipyridine-based conjugated microporous polymer (CMP) loaded with [Cp*IrCl2](2) for the base-free aqueous dehydrogenation of formic acid to H-2/CO2. This catalyst exhibits high activity and selectivity at temperatures over 130 degrees C and with formic acid concentrations as high as 10 M. Recycling tests demonstrate a low Ir leaching and a gradual increase in the activity over six runs and a low CO content in the gas phase of about 138 ppm. TOFs of up to 123894 h(-1) were obtained using 0.1 wt % Ir loading.