Bimodal Mesoporous Carbon-Coated MgO Nanoparticles for CO2 Capture at Moderate Temperature Conditions

详细信息    查看全文

• 作者：Zhongzheng Zhang ; Jianyuan Li ; Jian Sun ; Hui Wang ; Wei Wei ; Yuhan Sun
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2016
• 出版时间：July 27, 2016
• 年：2016
• 卷：55
• 期：29
• 页码：7880-7887
• 全文大小：528K
• 年卷期：0
• ISSN：1520-5045

文摘

Bimodal mesoporous carbon supported MgO (MgOMC) materials were prepared to provide a candidate for trapping CO<sub>2sub> in flue gas at high temperature by an impregnation method. Textural properties of MgOMC were characterized by X-ray diffraction, N<sub>2sub> adsorption/desorption isotherm, scanning electron microscopy, transmission electron microscopy and an element mapping method, and their CO<sub>2sub> adsorption behaviors in both pure CO<sub>2sub> and 10 vol % CO<sub>2sub> simulated flue gas were evaluated by a thermal gravimetric method at ambient temperature. Effects of MgO content in composite and calcination temperature on CO<sub>2sub> adsorption capacity were studied. Results showed that MgOMC samples with high content of basic MgO sites and well-developed porous structure exhibit high CO<sub>2sub> uptakes at 75 °C, rapid adsorption kinetics, excellent CO<sub>2sub> selectivity in flue gas and good regenerability under mild temperature below 300 °C, indicating their potential application in the CO<sub>2sub> capture from flue gas.