Paper Title:
Phase Diagram of MgCl2-LiCl-Na2­SiO3-H2O System at 200°C and Synthesis of Hectorite
  Abstract

Phase diagram of MgCl2–LiCl–Na2­SiO3–H2O (MLSH) system at 200°C was reported. The phase diagram was designed according to the hydrothermal system in which hectorite was formed. The solid phases were characterized by X-ray diffraction (XRD) and energy dispersive spectrometer (EDS). Lithium silicate, hectorite and karpinskite were observed as solid phases. The presence of hectorite in solid phases was decided by the molar ratio of MgCl2 and Na2SiO3 in the system. When the Mg/Si molar ratio exceeded a certain value, little hectorite was formed even though there was a large amount of LiCl in the system. The reason may be that it was difficult for Li+ to replace the Mg2+ in the framework. As a versatile nanomaterial, hectorite could be synthesized using concentrated natural brine as starting materials by hydrothermal method at 200°C. The phase diagram could be used as the theoretical principle for synthesis of hectorite and comprehensive utilization of concentrated natural brine.

  Info
Periodical
Edited by
Rongming Wang, Ying Wu and Xiaofeng Wu
Pages
201-206
DOI
10.4028/www.scientific.net/MSF.688.201
Citation
X. J. Yin, Y. Z. Jia, Y. Jing, Y. Yao, J. Ma, "Phase Diagram of MgCl2-LiCl-Na2­SiO3-H2O System at 200°C and Synthesis of Hectorite", Materials Science Forum, Vol. 688, pp. 201-206, 2011
Online since
June 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Yukio Makino, Kesami Saito, Yoshihiro Murakami, Katsuhiko Asami
Abstract:In order to examine the critical content of AlN for phase change from B1 type to B4 type, Zr-Al-N and Nb-Al-N pseudobinary films were...
195
Authors: Xiao Ping Luo, Lan Ting Xia, Ming Gang Zhang
Abstract:The effect of Cd and Sb addition on the microstructural and mechanical properties of as-cast AZ31 alloys was investigated and compared. The...
197
Authors: Peng Wan Chen, Xiang Gao, Jian Jun Liu, Hao Yin, Feng Lei Huang
Abstract:Different TiO2 precursors were impacted by detonation-driven high velocity flyers to obtain high-pressure phases of titania under...
155
Authors: Yun Dong, Xiao Ping Lin, Run Guo Zheng, Shi Hui Jiao
Chapter 7: Materials and Energy Saving
Abstract:The solidification microstructure of Mg-6Zn-3Y alloy under super-high pressure was investigated by using X-ray diffraction (XRD) and scanning...
1347
Authors: Wen Juan Zhao, Dian Wen Liu, Xiao Lin Zhang, Shu Qin Zeng, Guo Yin Xu, Qi Cheng Feng
Chapter 20: Mineral Processing, Mining Engineering and Technology
Abstract:Zinc oxide ore from Lanping contained large amount of fine slime which badly deteriorated flotation performance, and it complexly intergrowed...
3385