A novel amorphous silica material(ASM) was successfully prepared from kaolin and characterized by several techniques, including Fourier transform infrared spectroscopy(FTIR), X-ray diffraction(XRD), field emission scanning electron microscopy(FE-SEM), and N2adsorption-desorption. The preparation procedure of ASM involved two aspects: SiO_3~(2-)leaching from kaolin and preparation of ASM. The optimum SiO_3~(2-)leaching condition was confirmed at calcination temperature of 960 ℃, Na OH concentration of 20%, r...
【更新日期】
2016-12-02
【分类号】
TQ424.2;TQ127.2
【正文快照】
0 IntroductionSilica material,a kind of white appearance,qualitative light,and fluffy amorphous porous material[1],can be expressed as Si O2·n H2O,wherein n H2O existsin the form of surface hydroxyl groups.The silicamaterial was widely used in industry a
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