Solid-Liquid Equilibria for the Quaternary Na2B4O7 - Na2so4 - K2B4O7 - K2so4 - H2O System at 323K

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Solid - liquid Equilibria for the quaternary system Na2B4O7 - Na2SO4 - K2B4O7 - K2SO4 - H2O at 323K were studied experimentally using the method of isothermal solution saturation. Solubilities and densities of the solution of the system were measured experimentally. On the basis of experimental data, the phase diagram of the quaternary system was constructed. In the equilibrium diagrams of the quaternary system Na2B4O7 - Na2SO4 - K2B4O7 - K2SO4 - H2O at 323 K, there are three invariant points F1, F2 and F3, seven univariant curves E1-F1, E2-F1, E4-F3, E5-F3, E3-F2, F1-F2 and F2-F3, and five fields of crystallization corresponding to Na2B4O7·10H2O,K2B4O7·4H2O,Na2SO4,K2SO4 and Na2SO4·3K2SO4. The experimental results show that sulfates have bigger solubilities than borates in the quaternary system Na2B4O7 - Na2SO4 - K2B4O7 - K2SO4 - H2O at 323K.

Info:

Periodical:

Advanced Materials Research (Volumes 233-235)

Edited by:

Zhong Cao, Lixian Sun, Xueqiang Cao, Yinghe He

Pages:

27-31

DOI:

10.4028/www.scientific.net/AMR.233-235.27

Citation:

S. H. Sang et al., "Solid-Liquid Equilibria for the Quaternary Na2B4O7 - Na2so4 - K2B4O7 - K2so4 - H2O System at 323K", Advanced Materials Research, Vols. 233-235, pp. 27-31, 2011

Online since:

May 2011

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$35.00

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