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Synthesis of bimetallic-organic framework Cu/Co-BTC and the improved performance of thiophene adsorption

机译：双金属 - 有机框架Cu / Co-BTC的合成及噻吩吸附的改进性能

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摘要

A bimetallic-organic porous material (Cu/Co-BTC) with a paddle-wheel structure has been successfully synthesized by a solvothermal approach. The as-synthesized materials were characterized by XRD, SEM, ICP-AES, UV-Vis, TGA and N-2 adsorption at 77 K. The prepared Cu/Co-BTC samples were investigated in thiophene (TP) adsorption from model gasolines by the fixed bed adsorption method at 298 K. The results showed that only a small amount of Co could be successfully introduced into the framework of HKUST-1, and the introduction of Co had little effect on the crystalline structure, morphology, porosity, and thermal stability. The bimetallic Cu/Co-BTC with a Cu/Co ratio of 174 displayed significantly improved adsorption desulfurization performance, showing an increase in breakthrough volume by 30% compared with HKUST-1, implying that the central metal in the MOF plays an important role in adsorption desulfurization. The addition of toluene or cyclohexene (3.20-3.30 vol%) as a competitor in the model gasoline led to a decline in desulfurization performance, especially when cyclohexene was added. The bimetallic Cu/Co-BTC showed a slight loss in breakthrough volume by only 5% after regenerating 7 times, displaying an excellent regeneration property.
机译：通过溶剂热方法成功地合成了具有桨轮结构的双金属 - 有机多孔材料（Cu / Co-BTC）。通过XRD，SEM，ICP-AES，UV-VI，TGA和N-2在77K下表征了XRD，SEM，ICP-AES，UV-VI，TGA和N-2吸附。通过模型汽油的噻吩（TP）吸附制备的Cu / Co-BTC样品298 K的固定床吸附方法显示结果表明，只有少量的CO可以成功地引入HKust-1的框架中，并且CO的引入对晶体结构，形态，孔隙度和热影响几乎没有影响稳定。具有174个Cu / Co比的双金属Cu / Co-BTC显着提高了吸附脱硫性能，显示出与HKust-1相比的突破量增加30％，这意味着MOF中的中央金属在其上起重要作用吸附脱硫。添加甲苯或环己烯（3.20-3.30体积％）作为模型汽油的竞争对手导致脱硫性能下降，特别是当加入环己时。双金属Cu / Co-BTC在再生7次后，在再生7次后，突破量的略有损失，显示出优异的再生性。

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  • 来源
    《RSC Advances》 |2019年第27期|共6页
  • 作者

    Tian Fuping; Qiao Chenxia; Zheng Renyu; Ru Qiaofeng; Sun Xin; Zhang Yifu; Meng Changgong;

  • 作者单位

    Dalian Univ Technol State Key Lab Fine Chem Sch Chem 2 Linggong Rd POB 288 Dalian 116024 Peoples R China;

    Dalian Univ Technol State Key Lab Fine Chem Sch Chem 2 Linggong Rd POB 288 Dalian 116024 Peoples R China;

    Dalian Univ Technol State Key Lab Fine Chem Sch Chem 2 Linggong Rd POB 288 Dalian 116024 Peoples R China;

    Dalian Univ Technol State Key Lab Fine Chem Sch Chem 2 Linggong Rd POB 288 Dalian 116024 Peoples R China;

    Dalian Univ Technol State Key Lab Fine Chem Sch Chem 2 Linggong Rd POB 288 Dalian 116024 Peoples R China;

    Dalian Univ Technol State Key Lab Fine Chem Sch Chem 2 Linggong Rd POB 288 Dalian 116024 Peoples R China;

    Dalian Univ Technol State Key Lab Fine Chem Sch Chem 2 Linggong Rd POB 288 Dalian 116024 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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