Elisa Hernández, Alejandro Belinchón, Pablo Navarro, José Palomar
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In addition, liquid–liquid extraction approach is found to be an efficient separation strategy for carbonate product and IL catalyst. 1-Decanol (DOH) is selected as efficient extracting solvent, due to its almost complete immiscibility with glycerol carbonate, as well as the high distribution ratio of the IL catalyst in DOH rich phase. It implies an easy product separation and, simultaneously, an easy catalyst recovery. A preliminary kinetic validation of the three-phase reactor performance has been properly described, enabling the intensified concept. Finally, combining COSMO/Aspen simulation and life cycle assessment (LCA) methodologies, low energy consumption (avoiding heating) and low GWP scenarios for the CO<sub>2</sub> conversion process have been concluded. 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引用次数: 0
摘要
碳捕集与利用是最大限度减少二氧化碳排放的前进方向。由于实现二氧化碳零净排放或负净排放具有挑战性,因此碳捕集与利用是寻求清洁有效能源的补充。碳酸甘油酯产品开辟了一种基于双残留物方法(甘油和二氧化碳)的新策略,与离子液体(ILs)一起,在温和条件下使用均相催化剂起草了一个新的单锅概念(强化三相反应器)。在这项工作中,[P666,14][Br]在二氧化碳与缩水甘油的环加成反应中的催化活性在 45 °C 和 5 bar 的温和条件下得到了证实,而且效果显著。此外,还发现液液萃取法是分离碳酸盐产物和 IL 催化剂的有效策略。由于 1-癸醇(DOH)与碳酸甘油酯几乎完全不相溶,而且 IL 催化剂在富含 DOH 的相中的分布比很高,因此被选为高效萃取溶剂。这意味着产品易于分离,同时催化剂易于回收。对三相反应器性能的初步动力学验证已经进行了适当描述,从而实现了强化概念。最后,结合 COSMO/Aspen 模拟和生命周期评估(LCA)方法,得出了二氧化碳转化过程的低能耗(避免加热)和低全球升温潜能值(GWP)方案。这项工作提出了一个新的概念,同时也为开发这种 CCU 技术指明了道路,以实现二氧化碳零排放或负排放,从而可持续地捕获二氧化碳并将其转化为高附加值产品。
Mild One-Pot production of glycerol carbonate from CO2 with separation from ionic liquid catalyst
Carbon capture and utilization stands as way forward in the minimization of CO2 emissions. It complements the search for clean and effective energy, as it is challenging to achieve zero to negative CO2 net emissions. The glycerol carbonate product opens a new strategy based on a double-residue approach (glycerol and CO2) to contribute, together with ionic liquids (ILs), drafting a new one-pot concept (intensified three phase reactor) at mild conditions and using homogeneous catalysts. In this work, the catalytic activity of [P666,14][Br] in the cycloaddition of CO2 to glycidol has been demonstrated to be highly effective under mild conditions of 45 °C and 5 bar. In addition, liquid–liquid extraction approach is found to be an efficient separation strategy for carbonate product and IL catalyst. 1-Decanol (DOH) is selected as efficient extracting solvent, due to its almost complete immiscibility with glycerol carbonate, as well as the high distribution ratio of the IL catalyst in DOH rich phase. It implies an easy product separation and, simultaneously, an easy catalyst recovery. A preliminary kinetic validation of the three-phase reactor performance has been properly described, enabling the intensified concept. Finally, combining COSMO/Aspen simulation and life cycle assessment (LCA) methodologies, low energy consumption (avoiding heating) and low GWP scenarios for the CO2 conversion process have been concluded. This work enables a new concept together with concluding the path to developing this CCU technology in the search of zero to negative CO2 emissions to sustainably capture and convert CO2 into value-added products.
期刊介绍:
Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.