Process parameters influence on zone refining and thermodynamics analysis of 1,2-diphenylethane

Yabing Qi; Jun Li

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Process parameters influence on zone refining and thermodynamics analysis of 1,2-diphenylethane

Regular | Updated：2026-01-06

- Process parameters influence on zone refining and thermodynamics analysis of 1,2-diphenylethane
- Chinese Journal of Chemical Engineering Vol. 42, Issue 2, Pages: 338-343(2022)
- Affiliations：
  
  1. School of Chemistry and Chemical Engineering, Xi'an University of Architecture and Technology,Xi'an,China,710055
  2. School of Chemical Engineering, Sichuan University,Chengdu,China,610065
- Author bio：
- Funds：
- DOI：
  CLC：
- Published：2022
- Accepted：
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Yabing Qi, Jun Li. Process parameters influence on zone refining and thermodynamics analysis of 1,2-diphenylethane[J]. Chinese Journal of Chemical Engineering, 2022, 42(2): 338-343.
DOI：

Yabing Qi, Jun Li. Process parameters influence on zone refining and thermodynamics analysis of 1,2-diphenylethane[J]. Chinese Journal of Chemical Engineering, 2022, 42(2): 338-343. DOI：

摘要

Abstract

Effective distribution coefficients of 9 impurities in 1

2-diphenylethane have been calculated by directional crystallization under different ambient frozen temperature. The effect of varied zone size

temperature difference between the melt and ambient frozen environment

number of zone on purity of 1

2-diphenylethane have been also investigated during the process of zone refining. The results indicate that the product purity in the intermediate purified region with varied zone size is higher 0.04%-0.2% than that with constant zone size. The product purity increases with temperature difference between the melt and ambient frozen environment. The appropriate temperature difference is adopted 50℃. The product purity in the intermediate region of sample bar with 2 molten zones is higher 0.05%-0.43% than that with 1 molten zone. In addition

the change of enthalpy and entropy between impurities and 1

2-diphenylethane have been determined.

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