Yin Meng Jia, Xiong Xiao Hong, Feng Xue Feng, Xu Wen Yuan, Krishna Rajamani, Luo Feng
School of Biology, Chemistry and Material Science, East China University of Technology, Nanchang, Jiangxi 344000, People's Republic of China.
College of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang 414006, China.
Inorg Chem. 2021 Mar 1;60(5):3447-3451. doi: 10.1021/acs.inorgchem.1c00033. Epub 2021 Feb 17.
Removal of trace SO from an SO-containing product is now receiving increasing attention. However, designing a robust porous adsorbent with high SO adsorption capacity and good SO/CO selectivity, as well as validity under humid conditions, is still a challenging task. Herein, we report a porous cage-based metal-organic framework, namely ECUT-111, which contains two distinct cages with apertures of 5.4 and 10.2 Å, respectively, and shows high a BET of up to 1493 m/g and a pore volume of 0.629 cm/g. Impressively, ECUT-111 enables an ultrahigh SO uptake of up to 11.56 mmol/g, exceeding most reported top-performing adsorbents for such a use. More importantly, complete separation of trace SO from SO/CO and SO/CO/N mixtures, especially under humid conditions, and excellent recycle use were observed for ECUT-111, suggesting its superior application in desulfurization of SO-containing products.
从含硫产品中去除痕量二氧化硫目前正受到越来越多的关注。然而，设计一种具有高二氧化硫吸附容量、良好的二氧化硫/一氧化碳选择性以及在潮湿条件下仍有效的坚固多孔吸附剂，仍然是一项具有挑战性的任务。在此，我们报道了一种基于多孔笼的金属有机框架，即ECUT-111，它包含两个分别具有5.4 Å和10.2 Å孔径的不同笼子，其比表面积高达1493 m²/g，孔体积为0.629 cm³/g。令人印象深刻的是，ECUT-111对二氧化硫的超高吸附量可达11.56 mmol/g，超过了大多数报道的此类用途的顶级吸附剂。更重要的是，观察到ECUT-111能在二氧化硫/一氧化碳和二氧化硫/一氧化碳/氮气混合物中完全分离痕量二氧化硫，尤其是在潮湿条件下，并且具有出色的循环使用性能，这表明其在含硫产品脱硫方面具有卓越的应用前景。
