A New Kind of Catalyst for Enhancing the Conversion Rate of Fe²⁺ to Fe³⁺

Abstract:

In poly ferric sulfate production process with pyrite cinder as the main raw material, the sodium nitrite as catalyst is too toxic to be used largely. By orthogonal experiment and single factor experiments, the best reaction conditions were studied for the sodium nitrite as the catalyst, the amount of catalyst is 0.8%, the reaction temperature is 50°C and the reaction time is 60 minutes. According these conditions, the catalyst (CH-2) was used to promote the oxidation-polymerization reaction. Results showed that the use of this non-sodium nitrite catalyst could not eliminate the product toxicity that would be caused by using sodium nitrite catalyst but also make the toxicity of PFS was eliminated and the performance was better.

• Periodical: Applied Mechanics and Materials (Volumes 178-181)
• Pages: 454-457
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.178-181.454
• Online since: May 2012
• Authors: Xiao Qing Niu
• Keywords: Catalyst, CH-2, Polyferric Sulfate (PFS), Sodium Nitrite

References

[1] X.C. Zhong: Environmental Science and Technology. Vol. 3(1993), p.29 (In Chinese)

[2] Mikami Y, Takei I, Iron Polysulfate Solution. JP, 49-53195[P], (1974)

[3] Butler A D, Fan Maohong, Brown R C, et al. Chemical Engineering Journal, Vol. 98(2004), p.265.

[4] L. He, Q. Xiang, Y. S. Cui: Chemical Engineering and Equipment. Vol. 5(2008), p.15(In Chinese)

[5] M. Zhou: Chemistry World. Vol. 2(2003), p.72(In Chinese)

[6] J. Y. Zhang: Salt Industry. Vol. 30(1998), p.36(In Chinese)

[7] GB 14591-2006. Poly Ferric Sulfate [S]