Halometallate ionic liquids: thermal properties, decomposition pathways, and life cycle considerations
Halometallate ionic liquids: thermal properties, decomposition pathways, and life cycle considerations
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DOI：
10.1039/d2gc01983c
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发表时间：
2022-07-07
期刊：
影响因子：
9.8
通讯作者：
Licence, Peter
中科院分区：
文献类型：
--
作者：
Clarke, Coby J.;Baaqel, Husain;Licence, Peter
卤金属酸盐离子液体以其独特的混合物理和化学性质为工业催化过程提供了新的机会。可调性是离子液体成功的基础，因为微小的结构变化会对任何一种性质产生巨大影响。可以通过调整结构来优化催化，以达到刘易斯碱度和酸度等目标性质，但结构的变化会同时影响物理性质。在这项工作中，我们提供了一个全面、系统和可靠的热参数列表，以帮助确定温度限制，以防止催化剂中毒，并限制更换昂贵且对环境要求苛刻的溶剂的需要。机理分析表明，分解对卤金属酸盐离子液体尤其有害，生命周期分析强调，较低水平的有机阳离子对经济和环境的可持续性更好。
Halometallate ionic liquids provide new opportunities for industrial catalytic processes because of their unique blend of physical and chemical properties. Tunability underpins the success of ionic liquids because small structural changes can have drastic effects on either property. Catalysis can be optimised by adjusting structures to target properties such as Lewis basicity and acidity, but the structural changes have simultaneous impacts on physical properties. In this work, we provide a thorough, methodical, and reliable list of thermal parameters to help define temperature limits to prevent catalyst poisoning and limit the need to replace costly and environmentally demanding solvents. Mechanistic insights show that decomposition is particularly detrimental for halometallate ionic liquids, and life cycle analysis highlights that lower levels of organic cations are better for economic and environmental sustainability.