Direct synthesis of mesoporous aluminosilicate using natural clay from low-grade potash ores of a salt lake in Qinghai, China, and its use in octadecylamine adsorption

作者：Sun, Chunyan^*; Zhang, Feng; Wang, Aili; Li, Shengfang; Cheng, Fangqin

来源：Applied Clay Science, 2015, 108: 123-127.

DOI：10.1016/j.clay.2015.02.007

• Aluminosilicate
• Mesoporous material
• Natural clay
• Hydrothermal synthesis
• Octadecylamine
• Adsorption

Aluminum-containing hexagonally ordered mesoporous silica, Al-MCM-41, was successfully synthesized for the first time using natural clay from low-grade potash ores of a salt lake in Qinghai, China, through liquid-phase transport Synthesis involved the use of impure natural clay, the principal components of which are kaolin and quartz, as a starting material to produce Al-MCM-41 directly without sedimentation processing; no additional silica or aluminum reagents were required in this process. The resultant product was characterized by X-ray fluorescence, X-ray diffraction, Fourier-transform infrared spectroscopy, N-2 adsorption/desorption isotherms, transmission electron microscopy, and Al-27 magic-angle spinning NMR. The adsorption capacity of the final product for removing octadecylamine in synthetic salt lake brine was also investigated. Results suggested that salt lake clay is a promising low-cost precursor for the industrial production of mesoporous aluminosilicate.

• 出版日期2015-5
• 单位青海大学; 山西大学