双孔十二核Al-Oxo集群为选择性/乙烯分离的双金属异基基框架
Jia-Pei Qiu1, Ren-Feng Yang1, Zi-Nan Chen1
1College of Chemistry & Chemical Engineering, Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, Shantou 515063, P. R. China.
Inorganic chemistry
|January 23, 2026
概括
新的金属有机框架有效地将乙烯和从MTO产品中分离出来. Al12INA-Fe具有很高的烯吸附性和选择性,使得高分子级乙烯的成本效益净化成为可能.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 分离科学 分离科学
背景情况:
- 从甲醇转烯 (MTO) 产品中分离乙烯 (C2H4) 和烯 (C3H6) 是很困难的,因为它们具有相似的特性.
- 传统的冷蒸是能源密集型和昂贵的.
研究的目的:
- 为C2H4/C3H6分离开发具有成本效益和高效的吸附剂.
- 调查用于MTO产品净化的双金属异基基金属有机框架 (Al12INA-M).
主要方法:
- 合成Al12INA-M (M = Mn,Fe,Co,Cu) 具有ftw的拓结构.
- 吸附能力和选择性的测量 (IAST).
- 动态突破实验和理论计算.
主要成果:
- Al12INA-Fe表现出高C3H6吸附率 (7.60 mmol g-1),中度的同质热量 (29.3 kJ mol-1),以及高C3H6/C2H4选择性 (~8).
- 均等C2H4/C3H6混合物的有效分离,从而产生聚合物级C2H4.4.
- 低合成成本 (每公斤345.3美元) 和净化成本 (每升C2H4约5.44美元).
结论:
- Al12INA-Fe是一种有希望的,具有成本效益的吸附剂,用于C2H4/C3H6分离.
- 分离机制涉及分子选和有利的宿主-客人相互作用.
- 这种吸附剂为冷蒸提供了一种节能替代方案.
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