High Production of Hydrogen on Demand from Silanes Catalyzed by Iridium Complexes as a Versatile Hydrogen Storage System
作者:David Ventura-Espinosa、Sara Sabater、Alba Carretero-Cerdán、Miguel Baya、Jose A. Mata
DOI:10.1021/acscatal.7b04479
日期:2018.3.2
dehydrogenative coupling of 1,4-disilabutane and methanol enables an effective hydrogen storage capacity of 4.3 wt % that is as high as the hydrogen contained in the dehydrogenation of formic acid, positioning the silane/alcohol pair as a potential liquid organic hydrogen carrier for energy storage. In addition, the heterogenization of the iridium complex on graphene presents a recyclable catalyst that
硅烷和醇的催化脱氢偶联代表了按需生产氢气的便捷方法。该催化剂为式[IrCp *(Cl)2(NHC)]的铱络合物,其中含有被a标记官能化的N杂环卡宾(NHC)配体,可在室温下有效催化反应,从而生成H 2在几分钟内定量。结果,1,4-二硅丁烷和甲醇的脱氢偶联使得有效储氢容量为4.3 wt%,与甲酸脱氢中所含的氢一样高,从而将硅烷/醇对定位为潜在的液体储氢的有机氢载体。此外,铱络合物在石墨烯上的异质化提供了一种可循环使用的催化剂,该催化剂在至少10次额外运行中仍保持其活性。催化活性位在石墨烯基面上的均匀分布可防止扩散问题,并且固定后可保持反应动力学。