煅烧温度对天然水菱镁矿结构性能的影响
发布时间：2019-06-29 07:27
【摘要】：以产自我国西藏班戈湖地区的天然水菱镁矿为研究对象,采用X射线衍射技术、扫描电子显微技术、比表面积及孔径分布分析,研究煅烧温度对天然水菱镁矿的结构特征及调湿性能的影响。结果表明:随着煅烧温度的升高,物相主要由水菱镁矿(200℃)、非晶态镁化合物(200~300℃)向方镁石(400℃)发生转变,同时伴随着气体的逸出,形貌也发生明显变化;当煅烧温度为400℃时,由于晶体结构破坏及气体逸出生成的纳米级活性氧化镁具有特殊的介孔结构,比表面积达到132.445 m2/g,平衡吸湿量可达14.05%。
[Abstract]:Taking the natural magnesite produced in Bangohu area, Tibet, China as the research object, the effects of calcination temperature on the structural characteristics and humidification properties of natural magnesite were studied by means of X-ray diffraction technique, scanning electron microscope technique, specific surface area and pore size distribution analysis. The results show that with the increase of calcination temperature, the phase mainly changes from magnesite (200 鈩，
本文编号：2507659
[Abstract]:Taking the natural magnesite produced in Bangohu area, Tibet, China as the research object, the effects of calcination temperature on the structural characteristics and humidification properties of natural magnesite were studied by means of X-ray diffraction technique, scanning electron microscope technique, specific surface area and pore size distribution analysis. The results show that with the increase of calcination temperature, the phase mainly changes from magnesite (200 鈩，
本文编号：2507659
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