| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1684671 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2007 | 6 Pages |
Abstract
The original palygorskite clay mineral has been collected from Longwangshan, Xuyi, Jiangsu Province, China. XRF analysis was performed to study its chemical compositions. Thermogravimetric analysis and differential thermogravimetric analysis (TGA/DTA) were used to study the weight loss due to dehydration and dehydroxylation. Then eight samples were prepared by heating at various temperatures. X-ray diffraction (XRD) patterns and Mössbauer spectra were measured to study the crystal evolvement and the occupation of iron cations. It revealed that the iron ions occupied the M1 and M2 with the ratio closed to 3:1. Hematite has been observed when heated at 650 °C, which indicated that iron cations mainly occupy M1 sites. An unknown silicate was identified when heated at 750 °C and dominated at 850 °C.
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
Yan-Jun Huang, Zhen Li, Shu-Zhen Li, Zi-Liang Shi, Lin Yin, Yuan-Fu Hsia,