Identification of Mg based phases in ilmenites by X-ray absorption spectroscopy

Marcin T. Klepka 1Krystyna Lawniczak-Jablonska 1Iraida N. Demchenko 1Roman Minikayev 1Maciej Jablonski 3Velichka Kontozova 2

1. Polish Academy of Sciences, Institute of Physics, al. Lotników 32/46, Warszawa 02-668, Poland
2. University of Antwerp, Department of Chemistry, Groenenborgerlaan 171, Antwerp 2020, Belgium
3. Technical University, Institute of Chemistry and Environmental Protection, Al. Piastów 42, Szczecin 71 065, Poland


Ilmenites are important minerals used as a source for TiO2 (white pigment) production. Ilmenites originated from Norway, India, China and Australia are frequently being used in industrial technological processes. This raw material i mainly used in titanium dioxide production by sulphate method. This method requires the knowledge about elemental and phase composition for adjusting the efficiency and the safety of kinetics of the reaction. The main phases which involved Ti and Fe are known but content and chemical states of other elements is also important because of their impact on quality of the final product. In the presented paper Mg based phases were studied in minerals listed above. To characterize these minerals we have applied X-ray absorption spectroscopy (XAS), X-ray diffraction (XRD) and single particle electron probe microanalysis (SPEPMA). From the performed SPEPMA and XRD measurements it results that Mg phases constituted quite substantial part of investigated minerals. The Mg chemical states were evaluated by applying the principal components analysis of X-ray absorption K-spectra of Mg (XANDA code was used). The spectra were measured at BEESY beamline UE52PGM. The Mg was found in three chemical compounds MgTiO3, MgSiO3 and Mg(OH)2. The content of the particular phases depends on the place were minerals were collected. These foundings were the starting point in Rietvield analysis of diffraction data and they were compared with the results from SPEPMA cluster analysis.

This work was partially supported by European Community under Contract

RII3-CT-2004-506008 (IA-SFS).


Related papers
  1. X-ray diffraction studies of (Pb,Cd)Te solid solution – possible new material for thermoelectric applications
  2. Hexagonal MnTe with NiAs structure: thermal expansion coefficients and exchange striction
  3. Physical properties of unique ZnO single crystals from Oława Foundry
  4. Up-conversion and down-conversion processes observed in Er3+, Yb3+ and Mn2+ doped ZnAl2O4 nanoparticles
  5. High-pressure diffraction study of structural and elastic properties of zircon-type and scheelite-type RVO4 (R = Nd, Eu)
  6. Elastic properties of dysprosium orthovanadate: An in-situ powder-diffraction study
  7. Thermal expansion of Si3N4 and Ge3N4
  8. Location of metals in ZnO electrospined nanofibers
  9. Low-temperature expansion of metastable Pb1-xCdxTe solid solution
  10. Mangan w warstwach ZnMnO hodowanych metodą osadzania warstw atomowych
  11. Can we control the process of room temperature ferromagnetic clusters formation in GaMnAs matrix?
  12. Struktura nowych kompleksów miedzi(II) i cynku(II) z pochodnymi benzofuranu – badania z wykorzystaniem absorpcji i dyfrakcji promieniowania rentgenowskiego
  13. Optimization of technology for contact metallization in electronic devices - XRD and EXAFS studies
  14. Lokalne otoczenie atomów kobaltu w cienkich warstwach ZnCoO
  15. Lattice parameters of hard materials in the low-temperature range
  16. High-pressure diffraction study of α and β Ge3N4
  17. Phase composition study of natural minerals used as a source of white pigment production
  18. EXAFS investigation of the local atomic structure of di-alanino acid derivative of protoporphyrin IX
  19. Electronic structure of Mn atoms in (Ga,Mn)As layers modified by high temperature annealing
  20. Influence of high temperature annealing on the local atomic structure around Mn atoms and magnetic properties of (Ga,Mn)As layers
  21. Low temperature ZnMnO by ALD
  22. Substrate effect on the ground state of the magnetic order in NSMO/YBCO superlattices
  23. Method of Manganese co-doping of LT ZnO films
  24. Ferromagnetism in ZnO:Mn thin films deposited by PEMOCVD
  25. Ferromagnetism of In1-XMnXSe and behaviour of excess Mn in InSe crystal
  26. Rietveld refinement for polycrystalline indium nitride
  28. Relationship between condition of deposition and properties of W-Ti-N thin films prepared by reactive magnetron sputtering
  29. Promising high quality short period Fe/Fe-N multilayers deposited by the sputtering
  30. Structural and Magnetic Properties of Cr/Gd Multilayers Deposited on Sapphire and MgO Substrates
  31. The single particles approach of x-ray miroanalysis for estimation a phase composition of altered ilmenite used in pigments production
  32. X-ray diffraction studies of thermal-expansion with the use of 1D detectors installed at synchrotron beamlines
  33. Crystalline structure and surface morphology of DyxOy films grown on Si
  34. Analysis of stress in buried Ge layers by means of X-ray fluorescence
  35. X-ray fluorescence detection of iron in diaminoacid derivatives of protoporhyrin IX.
  36. Total electron yield X- ray absorption applied for hard materials studies
  37. CBN-Ti/TiN composites: hardness and chemical equilibrium as function of temperature
  38. Use of element selective methods for characterization of thin films
  39. Synchrotron Radiation - Sources and Properties
  40. Investigation of Ge quantum dots buried in silicon matrix by x-ray absorption
  41. Characterization of the c- BN/ TiC, Ti3SiC2, TiN systems by element selective spectroscopy

Presentation: Poster at E-MRS Fall Meeting 2007, Symposium I, by Marcin T. Klepka
See On-line Journal of E-MRS Fall Meeting 2007

Submitted: 2007-05-16 15:42
Revised:   2009-06-07 00:44