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CO2 Adsorption Behavior of Graphite Oxide Modified with Tetraethylenepentamine
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2017-12-26 00:00:00 , DOI: 10.1021/acs.jced.7b00824 Yi Zhang 1 , Yuan Chi 1 , Changzhong Zhao 1 , Yu Liu 1 , Yuechao Zhao 1 , Lanlan Jiang 1 , Yongchen Song 1
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2017-12-26 00:00:00 , DOI: 10.1021/acs.jced.7b00824 Yi Zhang 1 , Yuan Chi 1 , Changzhong Zhao 1 , Yu Liu 1 , Yuechao Zhao 1 , Lanlan Jiang 1 , Yongchen Song 1
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Adsorption with solid sorbents is one of the most promising options for carbon dioxide (CO2) capture. In this study, we developed novel adsorbents of graphite oxide (GO) modified by tetraethylenepentamine (TEPA). Samples were prepared with raw TEPA/GO ratios of 3, 5, 10, and 50 wt %, which we referred to as 3, 5, 10, and 50% aminated graphite oxide (AGO), respectively. The CO2 capture capacities of the different AGO samples were investigated at 25, 40, 70, and 90 °C over a wide range of pressures (0.1–5 MPa) using a high-pressure volumetric analyzer. With increasing pressure, the excess adsorbed amounts of both the pristine and modified GO samples increased significantly, with a peak near 3 MPa followed by a sequential decrease. In addition, both temperature and the amount of TEPA loaded on the surface markedly affected the adsorption capacity. The 3 and 5% AGO samples showed adsorptivity better than that of the pristine GO sample, while the 10 and 50% AGO samples exhibited worse performance. Furthermore, for the 3 and 5% AGO samples, the adsorption capacity was markedly improved at 70 °C in comparison with the pristine GO sample, suggesting that these are appropriate temperatures and TEPA/GO ratios for CO2 capture.
中文翻译：
四亚乙基五胺改性石墨对CO 2的吸附行为
固体吸附剂的吸附是捕获二氧化碳（CO 2）的最有希望的选择之一。在这项研究中，我们开发了由四亚乙基五胺（TEPA）改性的氧化石墨（GO）的新型吸附剂。样品的原始TEPA / GO比例为3、5、10和50 wt％，我们分别称为3％，5％，10％和50％胺化氧化石墨（AGO）。一氧化碳2使用高压体积分析仪在25、40、70和90°C的宽压力范围（0.1-5 MPa）下研究了不同AGO样品的捕获能力。随着压力的增加，原始和改性GO样品的过量吸附量均显着增加，峰值接近3 MPa，然后依次降低。另外，温度和表面上负载的TEPA的量均显着影响吸附能力。3％和5％的AGO样品显示出比原始GO样品更好的吸附能力，而10％和50％的AGO样品表现出较差的吸附性能。此外，对于3％和5％的AGO样品，与原始GO样品相比，在70°C时的吸附容量显着提高，表明这些温度对于CO是合适的温度和TEPA / GO比2个捕获。
更新日期：2017-12-27
中文翻译：
四亚乙基五胺改性石墨对CO 2的吸附行为
固体吸附剂的吸附是捕获二氧化碳（CO 2）的最有希望的选择之一。在这项研究中，我们开发了由四亚乙基五胺（TEPA）改性的氧化石墨（GO）的新型吸附剂。样品的原始TEPA / GO比例为3、5、10和50 wt％，我们分别称为3％，5％，10％和50％胺化氧化石墨（AGO）。一氧化碳2使用高压体积分析仪在25、40、70和90°C的宽压力范围（0.1-5 MPa）下研究了不同AGO样品的捕获能力。随着压力的增加，原始和改性GO样品的过量吸附量均显着增加，峰值接近3 MPa，然后依次降低。另外，温度和表面上负载的TEPA的量均显着影响吸附能力。3％和5％的AGO样品显示出比原始GO样品更好的吸附能力，而10％和50％的AGO样品表现出较差的吸附性能。此外，对于3％和5％的AGO样品，与原始GO样品相比，在70°C时的吸附容量显着提高，表明这些温度对于CO是合适的温度和TEPA / GO比2个捕获。
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