Preparation of chromium(III) spinels by the solid state reaction between potassium dichromate and hydrated metal chlorides
About: This article is published in Thermochimica Acta.The article was published on 1982-12-16. It has received 3 citations till now. The article focuses on the topics: Potassium dichromate & Chromium.
Citations
More filters
TL;DR: In this paper, fine-particle metal chromites (MCr2O4, where M = Mg, Ca, Mn, Fe, Co, Ni, Cu, and Zn) were prepared by the combustion of aqueous solutions containing the respective metal nitrate, chromium(III), and urea in stoichiometric amounts.
Abstract: Fine-particle metal chromites (MCr2O4, where M = Mg, Ca, Mn, Fe, Co, Ni, Cu, and Zn) have been prepared by the combustion of aqueous solutions containing the respective metal nitrate, chromium(III) nitrate, and urea in stoichiometric amounts. The mixtures, when rapidly heated to 350°C, ignite and yield voluminous chromites with surface areas ranging from 5 to 25 m2/g. MgCr2O4, sintered in air at 1500°C for 5 h, has a density of 4.0 g/cm3.
164 citations
TL;DR: In this paper, the infrared reflection and Raman spectra of spinel type oxides M Cr 2 O 4 (Mg, Mn, Fe, Co, Ni, Cu, Zn) including Kramers-Kronig analyses and oscillator-fit calculations are presented.
128 citations
TL;DR: In this paper, the chelation behavior of 4-(( E )-2-(1-(thiophen-2-yl)ethylidene)hydrazinyl)-1-(4-methoxyphenyl)-1 H -pyrrole-3-carbonitrile (HL) towards Cu(II) ions has been investigated.
19 citations
References
More filters
TL;DR: In this article, the thermal decomposition of the compounds ZnCrO4, ZnO4·3.5 Zn(OH)2·H2O and CuCrO 4 have been investigated using a combination of various techniques: TG, EPR, IR and X-ray.
Abstract: The thermal decompositions in vacuum of the compounds ZnCrO4, ZnCrO4·3.5 Zn(OH)2·H2O and CuCrO4 have been investigated using a combination of various techniques: TG, EPR, IR and X-ray.
7 citations