徐州工程学院学报（自然科学版）2025，Vol.40Issue(4)：24-29,6.
硅藻土制备纳米白炭黑的微结构与性能
Microstructure and Properties of Nano-Silica Prepared from Diatomite
ZHAN Feng 1LIAO Zhehui 1LI Zhongjing 1CHEN Nanchun2
作者信息
- 1. Guangdong Pustar Material Technology Co.,Ltd,Dongguan 523600,China
- 2. College of Materials Science and Engineering,Guilin University of Technology,Guilin 541004,China
- 折叠
摘要
Abstract
A Na2SiO3 precursor solution is formed through low-temperature hydrothermal dissolution with NaOH,using natural inorganic mineral diatomite as the silicon source.Under varying concentrations of Na2SO4,nano-silica is prepared via sulfuric acid precipitation and acidification.The microstructure and properties of the synthesized nano-silica are analyzed comparatively using X-ray diffraction(XRD),scanning electron microscopy(SEM),infrared spectroscopy(FTIR)and BET analysis of the specific surface area.The results reveal that the prepared silica exhibits abundant surface hydroxyl groups,indicating the structural characteristics of centric diatoms have disappeared.Optimal performance is achieved at a Na2SO4 concentration of 0.14 mol/L,where the primary particles have an average diameter of 9.506 nm and a BET specific surface area of 211.39 m2/g.The DBP absorption value is 2.647 cm3/g.These properties meet the performance criteria for Class A nano-silica products as defined by China's chemical industry standard(HG/T3061-1999).关键词
硅藻土/沉淀白炭黑/微结构Key words
Diatomite/precipitated silica/microstructure分类
通用工业技术引用本文复制引用
ZHAN Feng,LIAO Zhehui,LI Zhongjing,CHEN Nanchun..硅藻土制备纳米白炭黑的微结构与性能[J].徐州工程学院学报（自然科学版）,2025,40(4):24-29,6.
