Preparation and CO2 adsorption of amine modified layered double hydroxide via anionic surfactant-mediated route
Preparation and CO2 adsorption of amine modified layered double hydroxide via anionic surfactant-mediated route
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阴离子表面活性剂介导胺改性层状双氢氧化物的制备及其CO2吸附
DOI：
10.1016/j.cej.2011.11.078
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发表时间：
2012
影响因子：
15.1
通讯作者：
Wang J
中科院分区：
文献类型：
--
作者：
Wang J
通过阴离子表面活性剂介导的路线，然后通过单乙醇胺（MEA）萃取，制备胺改性的层状双氢氧化物。采用元素分析、X射线衍射、热重分析和漫反射红外光谱对材料进行了表征。CO2吸附在TG 209 F1热重分析仪上进行。结果表明，通过阴离子表面活性剂介导的方法成功地制备了胺改性水滑石，但大量的氨基被质子化，阻碍了CO2的吸附。MEA萃取后，材料剥落并失去其层状结构。通过质子化胺基与乙醇胺之间的离子交换获得游离氨基。在25°C时CO2吸附量达到1.39mmolg− 1，胺效率约为0.4。从氨基甲酸酯生成机理推导出的模型与实验数据吻合较好。
Amine modified layered double hydroxides were prepared via an anionic surfactant-mediated route followed by monoethanolamine (MEA) extraction. The as-prepared materials were characterized by elemental analysis, X-ray diffraction, thermogravimetric analysis and diffuse reflection infrared Fourier transform spectroscopy. CO2adsorption was performed in a TG 209 F1 thermogravimetric analyzer. The results showed that amine modified layered double hydroxides were successfully prepared via the anionic surfactant-mediated route but a considerable amount of amino groups were protonated which hindered CO2adsorption. After MEA extraction, the materials were exfoliated and lost their layered structure. Free amino groups were obtained through the ionic exchange between protonated amine group and ethanolamine. The CO2adsorption capacity at 25°C reached 1.39mmolg−1and the amine efficiency was about 0.4. The model derived from carbamate formation mechanism showed good agreement with the experimental data.
DOI：
--
发表时间：
1992
期刊：
影响因子：
--
作者：
K. Otsubo;Tosiharu Tanemura;K. Nitta;M. Oguchi;Nobuo Nakabayasi;Shuji Kimura;H. Kuroda
通讯作者：
H. Kuroda
改性纳米二氧化硅的表面性质及其对人血清白蛋白固定化的影响
DOI：
10.1134/s2070205110050072
发表时间：
2010
影响因子：
1.1
作者：
G. A. Kulikova;E. Parfenyuk
通讯作者：
E. Parfenyuk