文章基本信息

标题：Effect of System Pressure on the Surface Microstructure of Spherical Porous Basic Magnesium Carbonate
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作者：Yu Wei ; Yu Wei ; Hong Lei 等
期刊名称：MATEC Web of Conferences
电子版ISSN：2261-236X
出版年度：2017
卷号：114
页码：1-5
DOI：10.1051/matecconf/201711401015
语种：English
出版社：EDP Sciences
摘要：spherical porous basic magnesium carbonate (Mg5(CO3)4(OH)2.4H2O) has been prepared by using ammonium bicarbonate and magnesium chloride hexahydrate as raw materials. A novel CO2 bubble template was constructed to explain the formation of pore structure of porous Mg5(CO3)4(OH)2.4H2O. System pressure was found to be important in controlling the final pore size of spherical porous Mg5(CO3)4(OH)2.4H2O. By the investigation of the particles from pressure-dependent experiments, scanning electron microscopy observations, X-ray diffraction, and Fourier transform infrared spectra were used to follow the reactions and identify the products. The results show that the pore size of spherical porous Mg5(CO3)4(OH)2.4H2O gradually decreased via increasing system pressure.