Advances in Materials Science and Engineering / 2016 / Article / Fig 2

Research Article

A Novel Environmental Route to Ambient Pressure Dried Thermal Insulating Silica Aerogel via Recycled Coal Gangue

Figure 2

X-ray diffraction of the raw coal gangue and coal gangue after acid leach and typical chemical formula of the mineral components: quartz (SiO2), illite (KAl2[(Al,Si)Si3O10]), kaolinite (Al2Si2O5(OH)4), ankerite (CaMg(CO3)2), mullite (Al6Si2O13), and siderite (FeCO3).

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