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- W2318391100 abstract "Abstract In order to obtain the vanadium pentoxide, the process of vanadium pentoxide preparation by calcination from industrial ammonium metavanadate was further investigated. The effects of calcination temperature and calcination time were studied. The conditions of technique to prepare vanadium pentoxide in flakes by calcination from industrial ammonium metavanadate were optimized using a central composite design of response surface methodology. A quadratic equation model for field was built and effects of main factors and their corresponding relationships were obtained. The statistical analysis of the results showed that in the range studied, the rate of weight loss of the industrial ammonium metavanadate was significantly affected by the calcination temperature and calcination time. The results showed that the optimum conditions of ammonium metavanadate calcination were as follows: sample mass 15 g, calcination temperature 900 °C, calcination time 2.4 h, the rate of weight loss 85.1%. In addition, the sample was characterized by XRD and SEM. The SEM analysis and XRD showed the product was layer structure. According to results from analysis of variance, the value of the determination coefficient (R 2 = 0.9417) indicates that the model was a good fit that 94.17% of the variation could be explained well by the model." @default.
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- W2318391100 date "2014-04-01" @default.
- W2318391100 modified "2023-10-17" @default.
- W2318391100 title "Optimization on Response Surface Methodology for Preparing V2O5 from Industrial Ammonium Metavanadate" @default.
- W2318391100 doi "https://doi.org/10.1515/htmp-2013-0049" @default.
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