Synthesis of SBA-15 using natural clay from low-grade potash ores of a salt lake in Qinghai, China
- 10.2991/iwmecs-15.2015.110How to use a DOI?
- mesoporous material, natural clay, hydrothermal synthesis, SBA-15.
Hexagonally ordered mesoporous silica SBA-15 was successfully synthesized for the first time using natural clay from low-grade potash ores of a salt lake in Qinghai, China, without addition of silica reagents. The influence of changes in processing parameters, such as activation method, hydrothermal conditions, and calcinations temperature, on the textural characteristics of the SBA-15 products was studied. A pretreatment process involving iron-removing and alkali fusion was critical to the successful use of natural clay from low-grade potash ores as a source of silica in the surfactant-templated hydrothermal synthesis of SBA-15. The product was characterized by X-ray fluorescence (XRF), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FT-IR), N2 adsorption/ desorption isotherms, transmission electron microscopy (TEM) and TG-DSC analysis. The resulting mesophase had a surface area of 546.6m2.g-1 and an average pore diameter of 6.2 nm with narrow pore size distribution. The results indicated that salt lake clay was a promising low-cost precursor for the production of mesoporous molecular sieve.
- © 2015, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Feng Zhang AU - Chunyan Sun AU - Shengfang Li AU - Lin Yang AU - Xianyu Chao PY - 2015/10 DA - 2015/10 TI - Synthesis of SBA-15 using natural clay from low-grade potash ores of a salt lake in Qinghai, China BT - Proceedings of the 2015 2nd International Workshop on Materials Engineering and Computer Sciences PB - Atlantis Press SP - 553 EP - 559 SN - 2352-538X UR - https://doi.org/10.2991/iwmecs-15.2015.110 DO - 10.2991/iwmecs-15.2015.110 ID - Zhang2015/10 ER -