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Cr3+ and Cr4+ luminescence in glass ceramic silica
(Elsevier B.V., 2008-11-01)
This paper reports on the effect of glass ceramic silica matrix on [CrO4](4-) and Cr2O3 NIR and visible luminescence. Chromium-containing silica was obtained by precipitation from water-glass and chromium nitrate acid ...
Cr3+ and Cr4+ luminescence in glass ceramic silica
(Elsevier B.V., 2008-11-01)
This paper reports on the effect of glass ceramic silica matrix on [CrO4](4-) and Cr2O3 NIR and visible luminescence. Chromium-containing silica was obtained by precipitation from water-glass and chromium nitrate acid ...
Plomo, cromo III y cromo VI y sus efectos sobre la salud humana
(Universidad de La Salle. Ediciones Unisalle, 20 d)
Removal of chromium(VI) and chromium(III) from aqueous solution by grainless stalk of corn
(TAYLOR & FRANCIS INC, 2008)
Grainless stalk of corn (GLSC) was tested for removal of Cr(VI) and Cr(III) from aqueous solution at different pH, contact time, temperature, and chromium/adsorbent ratio. The results show that the optimum pH for removal ...
Photochemical cleavage of nitrate ion coordinated to a Cr(III) porphyrin#
(TAYLOR & FRANCIS LTD, 2010)
Photolysis of the nitrato chromium(III) tetraphenylporphyrinato compound Cr(TPP)(NO(3)) (TPP, tetraphenylporphyrin) in toluene solution clearly leads to the formation of the Cr(IV) oxo complex Cr(TPP)(O) with a quantum ...
Chromium removal by zeolite-rich materials obtained from an exhausted FCC catalyst: Influence of chromium incorporation on the sorbent structure
(Elsevier, 2013-07-16)
A spent FCC catalyst was converted into a zeolitic mixture, and the product obtained was afterward used as trapping material for Cr(III) species frequently found in aqueous solutions. Eventual changes in the sorbent structure ...