Preparation of Flowerlike Porous Mg5(CO3)4(OH)24H2O by CO2 Bubble Templating

2018 2nd International Conference on Advanced Technologies in Manufacturing and Materials Engineering

Lei, Hong^1 ; Wei, Yu^1 ; Huang, Zhiliang^1 ; Kong, Shijin^1 ; Yao, Donghui^1

School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan

430074, China^1

关键词: Basic magnesium carbonate;    Magnesium carbonate;    Magnesium chlorides;    Reaction temperature;    Templating;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/389/1/012032/pdf
DOI  :  10.1088/1757-899X/389/1/012032

来源: IOP

【 摘 要 】

Flowerlike porous basic magnesium carbonate (Mg5(CO3)4(OH)2•4H2O) were obtained successfully using magnesium chloride hexahydrate and ammonium bicarbonate as raw materials. We investigated the effect of reaction time and reaction temperature on the Mg5(CO3)4(OH)2•4H2O preparation. In the first three hours' reaction, Magnesium carbonate trihydrate (MgCO3•3H2O) whiskers generated, and transferred to the flowerlike porous Mg5(CO3)4(OH)2•4H2O as the reaction time prolonged. During the transformation, the flowerlike Mg5(CO3)4(OH)2•4H2O crystals firstly appeared at the head of the MgCO3•3H2O whisker.