Raman Spectroscopic Study of the Molybdate MineralSzenicsiteand Comparison with Other Paragenetically Related Molybdate Minerals
نویسندگان
چکیده
منابع مشابه
Comparison of UV and visible Raman spectroscopy of bulk metal molybdate and metal vanadate catalysts.
The visible (532 and 442 nm) and UV (325 nm) Raman spectra of bulk mixed metal oxides (metal molybdates and metal vanadates) were compared on the same spectrometer, for the first time, to allow examination of how varying the excitation energy from visible to UV affects the resulting Raman spectra. The quality of the Raman spectra was found to be a strong function of the absorption properties of...
متن کاملA Comparison of UV and Visible Raman Spectroscopy of Bulk Metal Molybdate and Vanadate Catalysts
1 Zettlemoyer Center for Surface Studies, Department of Chemical Engineering, Lehigh University, Bethlehem, PA, 18015, USA. 2 Centro de Invesitgacion. Y. Desarrolo en. Processos Cataliticos. CO NICET Univ. National de La Plata Calle 47 No.257 (1990) La. Plata, Buenos Aires. Argentina 3 State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics. Chinese Academy of Science. P.O.Box 1...
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Praseodymium calcium dimolybdenum hepta-oxide, Pr(1.37)Ca(0.63)Mo(2)O(7), crystallizes in the cubic pyrochlore-type structure. In the crystal structure, MoO(6) octa-hedra are linked together by common corners, forming a three-dimensional [Mo(2)O(6)] network. The Pr and Ca atoms and the remaining O atoms are located in the voids of the [Mo(2)O(6)] network. The Pr and Ca atoms are distributed sta...
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Dipraseodymium molybdenum scandium hepta-oxide, Pr2Mo1.73Sc0.27O7, crystallizes in the cubic pyrochlore-type structure. In the crystal, (Mo,Sc)O6 octa-hedra are linked together by common corners, forming a three-dimensional [(Mo,Sc)2O6] framework. The Pr atom and another O atom atom are located in the voids of this framework. The Mo and the Sc atom are distributed statistically over the same 16...
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The mobility of As in soils depends on several factors including redox potential, soil mineralogy, pH, and the presence of other oxyanions that compete with As for soil retention sites. We investigated the effects of pH and competing anions on the adsorption of arsenate [As(V)] on a-FeOOH (goethite) and y-AI(OHb (gibbsite). Batch equilibrium As(V) adsorption experiments were conducted with P an...
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ژورنال
عنوان ژورنال: Spectroscopy Letters
سال: 2007
ISSN: 0038-7010,1532-2289
DOI: 10.1080/00387010701301220