2,4-Difluoro anisole: a promising complexing agent for boron isotopes separation by chemical exchange reaction and distillation

Wu, Xiaoqin; Bai, Peng; Guo, Xianghai; He, Nongyue

doi:10.1007/s10967-013-2810-6

Cited by 11 publications

(1 citation statement)

References 16 publications

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“…28 However, isotopic separation of 10 B and 11 B is quite difficult because of the fairly small difference between the two isotopes. Chemical exchange distillation 29 is the only method that has been applied in industry, although disadvantages such as equipment corrosion and process unsafety restrict its industrial application. By contrast, boron isotopic separation by adsorption is of low energy consumption and relatively secure.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization, Adsorption, and Isotopic Separation Studies of Pyrocatechol-Modified MCM-41 for Efficient Boron Removal

Chen

Lyu

Wang

et al. 2019

Ind. Eng. Chem. Res.

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Selected by the conductive value change (Δ) caused by generated proton in the boric acid-polyol solutions, pyrocatechol (CL) and nitropyrocatechol (NCL) were grafted into the mesoporous MCM-41 material for boron removal and isotopic separation. The adsorption kinetics, isotherms and thermodynamics, effect of pH, adsorption mechanism, regeneration, and isotopic separation performance on the new materials were explored in this study. The adsorption equilibrium was reached within 10 h, with the maximum boron adsorption capacity reaching up to 1.799 mmol g −1 for CL-MCM-41 at pH 9 and 1.548 mmol g −1 for NCL-MCM-41 at pH 12, respectively. In addition, the boron isotopic separation factor was measured to be 1.158, which was significantly higher than that of commercial IRA 743. After four cycles of elution with acetic acid of low concentration, approximately 80% of the original adsorption capacity could be maintained, which also outperformed the commercial resins.

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Section: Introductionmentioning

confidence: 99%