Open AccessStudy on surface modification of attapulgite
Author(s) -
Xiangli,
Ruiyang,
Detang Wang,
GanLi
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/545/1/012031
Subject(s) - hydrochloric acid , roasting , surface modification , morphology (biology) , fourier transform infrared spectroscopy , specific surface area , chemical engineering , nuclear chemistry , chemistry , materials science , mineralogy , metallurgy , inorganic chemistry , catalysis , geology , organic chemistry , engineering , paleontology
In this study, the surface modification of attapulgite was studied. Firstly, the experiment of acid roasting was carried out. The morphology and composition of attapulgite before and after modification were systematically studied by means of SEM, TEM and FTIR. The results showed that the optimal experimental conditions for modification were hydrochloric acid acidification, the concentration was 1 M, the acidification time was 4 h, and the temperature was 75 °C.The thermal activation conditions were determined to be 420 °C roast for 2 h. Attapulgite was successfully modified, and its specific surface area ratio increased greatly, from 144.29 m 2 g −1 to 187.87 m 2 g −1 . In this study, the attapulgite with high specific surface area prepared is of great significance for the further use of attapulgite with high added value.