One-pot synthesis of foam-like magnesia and its performance in CO2 adsorption
One-pot synthesis of foam-like magnesia and its performance in CO2 adsorption
复制标题
泡沫状氧化镁的一锅法合成及其CO2吸附性能
DOI：
10.1016/j.micromeso.2012.11.004
复制
发表时间：
2013-03-15
影响因子：
5.2
通讯作者：
Zhu, Jian Hua
中科院分区：
文献类型：
--
作者：
Han, Kun Kun;Zhou, Yu;Zhu, Jian Hua
A new preparative route of porous magnesia is reported in this paper to fabricate pores in magnesia through in situ carbonization. New foam-like magnesia materials were synthesized via one-pot pathway using P123 and PEO as templates and magnesium nitrate as precursor, forming the as-made Mg2+-block-polymer-rich composites at first. These composites were converted to magnesia-carbon monolith in the calcination under nitrogen, and then formed the foam-like MgO after the succeeding calcination in air to remove carbon species. Foam-like magnesia samples possess the interconnected porous architecture and cavity, and their framework were constructed by nano-crystalline MgO; they have the large surface area (101-130 m(2) g(-1)) and pore volume (0.24-0.36 cm(3) g(-1)) as well as multiple-length-scale porosity (macro- and mesopores). Apart from the advantage of synthesis, this porous magnesia exhibits a considerably high capacity in the CO2 adsorption in the temperature range of 25-200 degrees C. (C) 2012 Elsevier Inc. All rights reserved.
