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首页> 外文期刊>Advanced Powder Technology: The internation Journal of the Society of Powder Technology, Japan >Amine-impregnated MCM-41 in post-combustion CO2 capture: Synthesis, characterization, isotherm modelling
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Amine-impregnated MCM-41 in post-combustion CO2 capture: Synthesis, characterization, isotherm modelling

机译：燃烧后CO2捕获中的胺浸渍的MCM-41：合成，表征，等温模型

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In this study, a composite mesoporous silica material MCM-41 (Mobil composite matter) is impregnated with monoethanolamine (MEA) as primary linear amine, benzylamine (BZA) as primary cyclic amine and N-(2-aminoethyl) ethanolamine (AEEA) as secondary diamine and the effects of amine loading, amine type, CO2 partial pressure and adsorption temperatures on the CO2 adsorption are investigated. The CO2 adsorption performances of MCM-41 and amine impregnated MCM-41 samples are studied up to 1 bar of CO2 partial pressure and the temperature range of 25-60 degrees C. The amine loadings (% impregnation) are optimized for maximum CO2 uptake. The materials are characterised using N-2 adsorption/desorption isotherm, Fourier Transform Infrared (FT-IR) Spectroscopy, Thermogravimetric (TGA) and Elemental (CHNS) analysis. The materials have shown good structural and thermal stability. The MCM-41-40%AEEA, MCM-41-40%BZA and MCM-41-50%MEA samples are exhibited the CO2 adsorption capacity of 2.34 mmol/g (102.98 mg/g), 0.908 mmol/g (39.96 mg/g) and 1.47 mmol/g (64.69 mg/g) respectively. The CO2 uptake of MCM-41-40%AEEA is 3.5 times higher than that of in MCM-41 (0.68 mmol/g) and it is also the highest reported value as di-amine impregnated MCM-41. The results indicated that the adsorption capacities of the materials (MCM-41 and MCM-41-40%AEEA) are decreased with an increase of adsorption temperature in the range of 25-60 degrees C. The Freundlich, Langmuir, Sips and Toth isotherm models are used to correlate and predict experimental CO2 adsorption data. The Sips and Toth isotherm models are found to be better fitted with the experimental data. The isosteric heat of adsorption of MCM-41 and MCM-41-40%AEEA samples are also calculated from Van't Hoff plot using iSorbHP-win instrumental analysis software in the experimental temperature range. (C) 2019 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.
机译：在该研究中，将复合中孔二氧化硅材料MCM-41（MOBIL复合物质）用单乙醇胺（MEA）作为初级线性胺，苄胺（BZA）作为初级环胺和N-（2-氨基乙基）乙醇胺（AEEA）作为研究了二氧化胺和胺负载，胺型，CO 2分压和吸附温度的副二胺。研究了MCM-41和胺浸渍的MCM-41样品的CO 2吸附性能，最多1巴的CO 2分压和25-60℃的温度范围。胺载量（％浸渍）得到优化，用于最大CO2吸收。这些材料的特征在于使用N-2吸附/解吸等温线，傅里叶变换红外（FT-IR）光谱，热重增压（TGA）和元素（CHN）分析。材料具有良好的结构和热稳定性。 MCM-41-40％AEEA，MCM-41-40％BZA和MCM-41-50％MEA样品显示为2.34mmol / g（102.98mg / g），0.908mmol / g（39.96毫克）的CO 2吸附容量。 / g）和1.47mmol / g（64.69 mg / g）。 MCM-41-40％AEEA的CO2吸收比MCM-41（0.68mmol / g）高3.5倍，也是作为二胺浸渍MCM-41的最高报告值。结果表明，吸附温度的增加在25-60摄氏度范围内的吸附温度增加，材料（MCM-41和MCM-41-40％AEEA）的吸附容量降低模型用于相关和预测实验CO2吸附数据。发现SIP和TOTH等温线模型更好地配备了实验数据。 MCM-41和MCM-41-40％AEEA样本的吸附的旁边热量也在实验温度范围内使用ISORGHP-WIN乐器分析软件来计算Van't Hoff Plot。 （c）2019年日本粉末技术学会。由elsevier b.v发表。和日本粉末科技会。版权所有。

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