Study on Preparation and Spectroscopy of Silica-Alumina Hydrogel and Silica from Kaolin
LI Yan-feng1, PAN Xiao-bing1, LIU Gang2 , MEN Xue-hu1 , ZHANG Shu-jiang1 , WANG Xiao-long1
1. College of Chemistry and Chemical Engineering, Institute of Biochemical Engineering and Environmental Technology, Lanzhou University, Lanzhou 730000, China 2. Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
Abstract：In our research, silica-alumina hydrogel was prepared by activation with NaOH and reaction with HCl from kaolin, and silica was obtained from the hydrogel by drying and acidifying with HCl. IR, XRD and XRF were used for testing the results, and better result was obtained. The optimal conditions of processing for kaolin 40 g were 15-20 g of sodium hydroxide and 4-5 mol·L-1 of hydrochloric acid. Finally, preparation processing to get silica, as well as the structure and purity of the resulting silica were characterized by means of IR, XRD and XRF.
李彦锋1，潘晓兵1，刘 刚2，门学虎1，张树江1，王晓龙1 . 高岭土凝胶及氧化硅的制备与光谱性质研究[J]. 光谱学与光谱分析, 2005, 25(10): 1736-1738.
LI Yan-feng1, PAN Xiao-bing1, LIU Gang2 , MEN Xue-hu1 , ZHANG Shu-jiang1 , WANG Xiao-long1 . Study on Preparation and Spectroscopy of Silica-Alumina Hydrogel and Silica from Kaolin . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(10): 1736-1738.
