Formic acid is considered a promising energy storage medium, and its selective dehydrogenation enables the generation of high-purity H₂. 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 H₂/CO₂. This catalyst exhibits high activity and selectivity at temperatures over 130 °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.

中文翻译：

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基于联吡啶的共轭微孔聚合物，用于甲酸的Ir催化脱氢

甲酸被认为是有前途的能量存储介质，并且其选择性脱氢能够生成高纯度的H ₂。本文中，我们报道了一种基于联吡啶的共轭微孔聚合物（CMP），其中负载有[Cp * IrCl ₂ ] _2，用于甲酸的无碱水溶液脱氢成H ₂ / CO ₂。该催化剂在超过130°C的温度下具有很高的活性和选择性，甲酸浓度高达10M。循环测试表明，铱的浸出率低，六次运行中活性逐渐提高，气相中的CO含量低约138 ppm。使用0.1 wt％的Ir填充量可获得高达123894 h ^–1的TOF 。