Carbon Dioxide Adsorption Capacity of Alkali-metal Cation Dopped MIL125

被引：0
|
作者：
Song L. [1 ]
Yan J. [1 ]
Zhang D. [1 ]
Xue C. [1 ]
Xia H. [1 ]
Niu Y. [1 ]
机构：
[1] Engineering Research Center of Transportation Materials, Ministry of Education, School of Materials Science and Engineering, Chang'an University, Xi'an
来源：
Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research | 2023年 / 37卷 / 09期
基金：
中国国家自然科学基金;
关键词：
alkali metal; CO[!sub]2[!/sub] adsorption; inorganic non-metallic materials; metal organic frameworks; MIL125;
D O I：
10.11901/1005.3093.2022.504
中图分类号：
学科分类号：
摘要：
The metal-organic skeleton compound MIL125 was prepared with terephthalic acid and isopropyl titanate as raw materials, afterwards by post impregnating in alkaline metal chloride solution, a series of alkali metal cation-doped M@MIL125-t (M: Li+, Na+, K+; t: 6 h, 9 h, 12 h) were obtained. They were characterized by X-ray diffractometer, Fourier transform infrared spectroscopy and field emission scanning electron microscopy. Their specific surface area and CO2 adsorption capacity were assessed by nitrogen isothermal adsorption-desorption curve and CO2 adsorption curve measurements. The results showed that being impregnated with alkali metal chloride solution, the structure and crystal form of MIL125 has not changed significantly. The surface and pores of MIL125 grain was corroded by the impregnation solution, and the specific surface area increased first and then decreased. The optimum impregnation time of MIL125 in the three alkali metal chloride solutions was 9 h. When doped with Na+ by impregnating for 9 h, the maximum specific surface area is up to 2497 m2/g, which is 81.5% higher than that of blank MIL125, and the CO2 adsorption amount is 1.41 mmol/g, which is 72.0% higher than that of blank MIL125. © 2023 Chinese Journal of Materials Research. All rights reserved.
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页码：649 / 654
页数：5
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