High-temperature study of basic ferric sulfate, FeOHSO4

被引：17
|
作者：
Ventruti, Gennaro [1 ]
Della Ventura, Giancarlo [2 ,3 ]
Gomez, Mario Alberto [4 ]
Capitani, Giancarlo [5 ]
Sbroscia, Marco [2 ]
Sodo, Armida [2 ]
机构：
[1] Univ Bari, Dipartimento Sci Terra & Geoambientali, Via Orabona 4, I-70125 Bari, Italy
[2] Univ Roma Tre, Dipartimento Sci, Largo S Leonardo Murialdo 1, I-00146 Rome, Italy
[3] INFN, LNF, Rome, Italy
[4] Shenyang Univ Chem Technol, Liaoning Engn Res Ctr Treatment & Recycling Ind D, Shenyang 110142, Peoples R China
[5] Univ Milano Bicocca, Dept Earth & Environm Sci, Piazza Sci 4, I-20126 Milan, Italy
来源：
PHYSICS AND CHEMISTRY OF MINERALS | 2020年 / 47卷 / 10期
关键词：
Sulfate; Crystal structure; Thermal stability; HT-FTIR; Raman; THERMAL-DECOMPOSITION; VIBRATIONAL SPECTROSCOPY; IRON SULFATE; DIFFRACTION; HYDROLYSIS; REFINEMENT; ELECTRODE; JAROSITE; HYDROXY; SPECTRA;
D O I：
10.1007/s00269-020-01113-7
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report in this paper a new crystal-chemical study of synthetic basic ferric sulfate FeOHSO4. The structure solution performed by the Endeavour program, from new X-ray powder diffraction (XRPD) data, indicated that the correct space group of the monoclinic polytype of FeOHSO(4)isC2/c. Selected Area Electron Diffraction (SAED) patterns are also consistent with this structure solution. The arrangement of Fe and S atoms, based on linear chains of Fe(3+)octahedra cross-linked by SO(4)tetrahedra, corresponds to that of the order/disorder (OD) family. The positions of the hydrogen atoms were located based on DFT calculations. IR and Raman spectra are presented and discussed according to this new structure model. The decomposition of FeOHSO(4)during heating was further investigated by means of variable temperature XRPD, thermogravimetry, and differential thermal analysis as well as IR and Raman spectroscopies.
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页数：12
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