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Adsorption Desulfurization via π-Complexation with Ag+-Exchanged Anionic Metal–Organic Framework
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2019-04-02 , DOI: 10.1021/acs.iecr.9b00617 Yanan Cao 1 , Shengjie Lu 1 , Wenliang Cui 1 , Yueyang Xu 2 , Zijia Cao 3 , Yongping Zeng 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2019-04-02 , DOI: 10.1021/acs.iecr.9b00617 Yanan Cao 1 , Shengjie Lu 1 , Wenliang Cui 1 , Yueyang Xu 2 , Zijia Cao 3 , Yongping Zeng 1
Affiliation
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The anionic metal–organic framework (Cu-BTC-DMA) was synthesized by the hydrothermal method. The extra-framework (CH3)2 NH2+ cations in Cu-BTC-DMA structure are movable and can be easily exchanged with Ag+. The Ag+-exchanged Cu-BTC-DMA was characterized through FT-IR, XRD, SEM, ICP, and N2 adsorption–desorption isotherms. The adsorption properties of Ag+-exchanged Cu-BTC-DMA with different Ag cation content were studied for the model fuel with different concentrations of thiophene. The results show that the Ag+-exchanged adsorbents show higher adsorption capacity for thiophene, which was ascribed to the introduction of Ag+ into Cu-BTC-DMA. Thiophene can interact with Ag+ via π-complexation. In addition, the Ag@Cu-BTC-DMA still shows the good performance of adsorption desulfurization in the presence of toluene. Ag@Cu-BTC-DMA (0.02 M) shows the highest adsorption capacity among the three adsorbents due to the high Ag+ amount and the almost integrated crystalline structure. In the process of regeneration, approximately 86% of the adsorptive capacity of Ag@Cu-BTC-DMA (0.02 M) can be recovered after four cycles.
中文翻译：
Ag +交换阴离子金属有机骨架通过π络合进行吸附脱硫
通过水热法合成了阴离子金属-有机骨架（Cu-BTC-DMA）。Cu-BTC-DMA结构中的额外骨架（CH 3）2 NH 2 +阳离子是可移动的，可以很容易地与Ag +交换。通过FT-IR，XRD，SEM，ICP和N 2吸附-解吸等温线表征了Ag +交换的Cu-BTC-DMA 。对不同浓度的噻吩模型燃料，研究了不同Ag阳离子含量的Ag +交换Cu-BTC-DMA的吸附性能。结果表明，Ag +交换的吸附剂对噻吩的吸附能力更高，这归因于将Ag +引入Cu-BTC-DMA。噻吩可以通过π络合物与Ag +相互作用。此外，Ag @ Cu-BTC-DMA在甲苯存在下仍显示出良好的吸附脱硫性能。Ag @ Cu-BTC-DMA（0.02 M）由于高的Ag +量和几乎一体化的晶体结构而在三种吸附剂中显示出最高的吸附容量。在再生过程中，四个循环后可回收约86％的Ag @ Cu-BTC-DMA（0.02 M）吸附能力。
更新日期：2019-04-03
中文翻译：
Ag +交换阴离子金属有机骨架通过π络合进行吸附脱硫
通过水热法合成了阴离子金属-有机骨架（Cu-BTC-DMA）。Cu-BTC-DMA结构中的额外骨架（CH 3）2 NH 2 +阳离子是可移动的，可以很容易地与Ag +交换。通过FT-IR，XRD，SEM，ICP和N 2吸附-解吸等温线表征了Ag +交换的Cu-BTC-DMA 。对不同浓度的噻吩模型燃料，研究了不同Ag阳离子含量的Ag +交换Cu-BTC-DMA的吸附性能。结果表明，Ag +交换的吸附剂对噻吩的吸附能力更高，这归因于将Ag +引入Cu-BTC-DMA。噻吩可以通过π络合物与Ag +相互作用。此外，Ag @ Cu-BTC-DMA在甲苯存在下仍显示出良好的吸附脱硫性能。Ag @ Cu-BTC-DMA（0.02 M）由于高的Ag +量和几乎一体化的晶体结构而在三种吸附剂中显示出最高的吸附容量。在再生过程中，四个循环后可回收约86％的Ag @ Cu-BTC-DMA（0.02 M）吸附能力。
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