Microporous metal-organic framework with dual functionalities for highly efficient removal of acetylene from ethylene/acetylene mixtures.
Microporous metal-organic framework with dual functionalities for highly efficient removal of acetylene from ethylene/acetylene mixtures.
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具有双功能的微孔金属有机骨架，可高效去除乙烯/乙炔混合物中的乙炔
DOI：
10.1038/ncomms8328
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发表时间：
2015-06-04
影响因子：
16.6
通讯作者：
Chen, Banglin
中科院分区：
文献类型：
--
作者：
Hu, Tong-Liang;Wang, Hailong;Li, Bin;Krishna, Rajamani;Wu, Hui;Zhou, Wei;Zhao, Yunfeng;Han, Yu;Wang, Xue;Zhu, Weidong;Yao, Zizhu;Xiang, Shengchang;Chen, Banglin
从含1%乙炔的乙烯/乙炔混合物中脱除乙炔是一项技术上非常重要但极具挑战性的任务。目前的脱除方法主要有贵金属催化剂部分加氢法和裂解烯烃溶剂萃取法，这两种方法都是高能耗和高成本的。在这里，我们报告了一种微孔金属有机框架，其中合适的孔/笼空间优先采取更多的乙炔比乙烯，而在孔/笼表面上的官能胺基团进一步加强其与乙炔分子的相互作用，导致其上级性能，这种分离。单一的X射线衍射研究，温度依赖性气体吸附等温线，模拟和实验柱穿透曲线和分子模拟研究共同支持的索赔，潜在的这种材料的工业用途的去除乙炔的乙烯/乙炔混合物含有1%的乙炔在室温下通过成本和能源效率的吸附分离过程。 从乙烯/乙炔混合物中脱除乙炔是工业上重要但具有挑战性的任务。在这里，作者报道了一种具有优化的孔/笼空间设计和化学功能化的微孔金属有机框架，能够从低浓度混合物中去除乙炔。
The removal of acetylene from ethylene/acetylene mixtures containing 1% acetylene is a technologically very important, but highly challenging task. Current removal approaches include the partial hydrogenation over a noble metal catalyst and the solvent extraction of cracked olefins, both of which are cost and energy consumptive. Here we report a microporous metal–organic framework in which the suitable pore/cage spaces preferentially take up much more acetylene than ethylene while the functional amine groups on the pore/cage surfaces further enforce their interactions with acetylene molecules, leading to its superior performance for this separation. The single X-ray diffraction studies, temperature dependent gas sorption isotherms, simulated and experimental column breakthrough curves and molecular simulation studies collaboratively support the claim, underlying the potential of this material for the industrial usage of the removal of acetylene from ethylene/acetylene mixtures containing 1% acetylene at room temperature through the cost- and energy-efficient adsorption separation process. The removal of acetylene from ethylene/acetylene mixtures is an industrially important but challenging task. Here the authors report a microporous metal–organic framework with optimized pore/cage space design and chemical functionalization, capable of removing acetylene from low concentration mixtures.
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