Copper ferrite catalyst

Kwan and Fujita (7fi) investigated the adsorption of carbon dioxide on a copper ferrite catalyst of the composition CuO-Fe203, prepared by the usual precipitation method and ignited at 500°C. in vacuo for about one month. Special precautions were made in the adsorption studies for attaining true adsorption equilibria. The adsorption isotherm for the low... 

Then we incorporated Cu into the Fe/M catalysts (M = Cr, Mn, Co, Ni, Cu, Zn and Ce) since Cu is a promoter for the Fe/Cr catalysts for the high-temperature WGS reaction in the industries [3-5]. Interestingly, Cu acts as a promoter for all the modified ferrite catalysts except Fe/Ce catalyst. It acts as an inhibitor for the Fe/Ce catalyst. These results show that all of the copper co-doped ferrites behave like Fe/Cr/Cu except Fe/Ce/Cu, which behaves differently for high-temperature WGS reaction. We explained this interesting behaviour of copper... 

Kumar et al. [60] developed magnetically separable copper ferrite NPs as a catalyst for the synthesis of 1,2,3-triazoles (Scheme 5.18). This one-pot preparation of 1,2,3-triazoles involves initial substitution of benzyl halides with sodium azide to generate in situ benzyl azides, which is followed by copper fenite-catalyzed cycloaddition reaction with alkynes in water at 70 °C. The present method described here is simple, facile, and can be applicable to a wide range of substrates with high functional-group tolerance. The method circumvents the problems encountered with the isolation of organic azides. The high activity, easy separation, conunercial availability, and reusabihty are the salient features of the catalyst that make this as a competitive catalyst. 

Nasir Baig, R. B. and Varma, R. S. 2012. A highly active magnetically recoverable nano ferrite-glutathione-copper (nano-FGT-Cu) catalyst for Huisgen 1,3-dipolar cycloadditions. Green Chem. 14(3) 625-632. 

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