The Effect of Concentration of Phosphoric Acid on the Degree of Reduction of VPO Catalyst

Abstract:

Making VPO catalyst in the condition of different concentrations of Phosphoric acid and the temperatures，determine the average valence of vanadium. with the method of Potassium permanganate-Ferrous ammonium sulfate, to investigate the effect of different concentration of phosphoric acid on the average valence of catalyst, under the different temperatures. The structure, composition, crystal, and the Particle size has been characterized by XRD and SEM. The results confirmed that compare with higher concentration of phosphoric acid，the catalyst that were made with lower concentration phosphoric acid had the low average valence, greater specific surface area, better crystallinity, and more compact structure.

• Periodical: Advanced Materials Research (Volumes 335-336)
• Pages: 1424-1427
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.335-336.1424
• Online since: September 2011
• Authors: Yan Lin Zhang, Yang Zhou, Dian Hui Hou, Xi Wu Fan, Nai Di Tan
• Keywords: Catalyst, Concentration, Phosphoric Acid, Temperature, VPO

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