Selective catalytic formic acid decomposition |for hydrogen generation in ionic liquids
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摘要: 研究了离子液体作为介质对在有机胺存在时甲酸分解制氢的影响。结果表明，离子液体的引入能明显促进甲酸分解反应，特别是BMImCl的引入。基于此同时为了取代挥发性有机胺、发展具有实用价值的甲酸分解制氢体系，设计和制备了一系列胺基功能化离子液体，并作为反应介质和助剂应用于甲酸均相分解反应中。其中钌-胺基功能化离子液体甲酸钠 (Ru-i-Pr2NEMImCl-HCOONa) 甲酸分解制氢体系具有优良的催化性能，相应的TOF > 600mol/mol/h。可以使用非挥发性的离子液体取代传统的挥发性胺，从而为发展具有实际应用价值、高效而清洁的甲酸分解制氢体系打下基础。Abstract: Effect of ionic liquids (ILs) as media for the decomposition of formic acid in the presence of organic amine was investigated, and this activity was observed to be markedly promoted by the addition of ILs, especially for BMImCl. Based on this finding and to avoid volatile organic amine, a series of amine-functionalized ILs were further designed and prepared as both reaction media and cocatalyst for homogeneous decomposition of formic acid. Among the ILs investigated, i-Pr2NEMImCl-HCOONa system exhibited high activity (TOF > 600mol/mol/h). This efficient and green method to produce hydrogen by formic acid decomposition has practical potentiality.
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Key words:
- formic acid /
- decomposition /
- hydrogen /
- ionic liquids /
- green chemistry
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