Xiao-Jing Xie, Heng Zeng, Yong-Liang Huang, Ying Wang, Qi-Yun Cao, Weigang Lu, Dan Li
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引用次数: 0
Abstract
Metal-organic frameworks (MOFs) with precisely controlled pore dimensions have greatly enriched the versatility of molecular sieving materials. Here, we report a channel-pore interconnected MOF (JNU-2) for direct production of o-xylene from six-component BTEXs (benzene, toluene, ethylbenzene, o-xylene, m-xylene, and p-xylene) in a single adsorption process. Individual adsorption measurements show complete exclusion of o-xylene and benchmark adsorption of other BTEXs. Competitive adsorption studies reveal record-high adsorption selectivity of other BTEXs over o-xylene. Vapor-phase breakthrough experiments verify its superior separation potential for sieving o-xylene from BTEXs. We further demonstrate o-xylene purification by simply soaking JNU-2 (10 g) in BTEXs (18 mL, 90% o-xylene) at room temperature, realizing an average of 15.2 mL of o-xylene (99.5%+ purity, 94% recovery) for 10 cycles. Considering its exceptional stability, JNU-2 may have great promise for energy-efficient o-xylene separation from BTEXs.
期刊介绍:
Chem, affiliated with Cell as its sister journal, serves as a platform for groundbreaking research and illustrates how fundamental inquiries in chemistry and its related fields can contribute to addressing future global challenges. It was established in 2016, and is currently edited by Robert Eagling.