Investigation Related to Hydrogen Isotopes Separation by Cryogenic Distillation

Bornea, Anisia; Zamfirache, Marius; Ștefănescu, Ioan; Preda, Anisoara; Balteanu, Ovidiu; Stefan, Ioana

doi:10.13182/fst08-a1846

Cited by 23 publications

(6 citation statements)

References 1 publication

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“…Heavy water (D 2 O) with good purity plays an important role in chemical analysis and spectral characterization . Generally, D 2 O is mass‐produced by direct separation from natural water through distillation owing to the slight difference in boiling point . Nevertheless, because of its high hygroscopicity, D 2 O is highly vulnerable to contamination from H 2 O .…”

Section: Figurementioning

confidence: 99%

A Facile Strategy for the Construction of Purely Organic Optical Sensors Capable of Distinguishing D₂O from H₂O

Luo

Zhu

et al. 2019

Angew Chem Int Ed

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Owing to the quite similar chemical properties of H2O and D2O, rational molecular design of D2O optical sensors has not been realized so far. Now purely organic chromophores bearing OH groups with appropriate pKa values are shown to display distinctly different optical responding properties toward D2O and H2O owing to the slight difference in acidity between D2O and H2O. This discovery is a new and facile strategy for the construction of D2O optical sensors. Through this strategy, ratiometric colorimetric D2O sensor of NIM‐2F and colorimetric/fluorescent dual‐channel D2O sensor of AF were acquired successfully. Both NIM‐2F and AF can not only qualitatively distinguish D2O from H2O by the naked eye, but also quantitatively detect the H2O content in D2O.

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Section: Figurementioning

confidence: 99%

A Facile Strategy for the Construction of Purely Organic Optical Sensors Capable of Distinguishing D₂O from H₂O

Luo

Zhu

et al. 2019

Angew Chem Int Ed

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“…Cryogenic distillation was utilized for tritium separation in the Savannah River Site Tritium Facilities and the National R&D Institute for Cryogenics and Isotopes Technologies-ICSI Rm. Valcea [17,19,20]. Meanwhile, electrolysis is predominantly combined with LPCE through Combined Electrolytic Catalytic Exchange, used at facilities like the Canada Deuterium Uranium nuclear power plant [21].…”

Section: Current Status Of Hydrogen Isotope Separation Technologiesmentioning

confidence: 99%

“…The process takes advantage of the small mass difference between isotopes, causing them to condense at different temperatures. The mixture is cooled to very low temperatures around 20-24 K, causing the isotopes to liquefy and then vaporize at different points, allowing for their separation [20,23]. The process is energy-intensive due to the extremely low temperatures required and the need for continuous distillation.…”

Section: Current Status Of Hydrogen Isotope Separation Technologiesmentioning

confidence: 99%

A Mini Review on Liquid Phase Catalytic Exchange for Hydrogen Isotope Separation: Current Status and Future Potential

Mhd Yusof,

Lock,

Abdul Talib

et al. 2024

Sustainability

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Liquid phase catalytic exchange (LPCE) appears a highly promising technology for separating hydrogen isotopes due to being less energy-intensive and having a high separation factor. This paper provides an overview of the current development of the hydrophobic catalysts used in the LPCE process, including the LPCE fundamentals, factors influencing its effectiveness, and proposals for future research areas. This paper specifically reviews the active metal catalysts, catalyst supports, operating temperatures, and molar feed ratio(gas-to-liquid,G/L). The addition of a second metal such as Ir, Fe, Ru, Ni, or Cr and modified catalyst supports showed enhancement of LPCE performance. Additionally, the validated optimized temperature of 60–80 °C and G/L of 1.5–2.5 provide an important basis for designing LPCE systems to improve separation efficiency. This paper concludes by highlighting potential research areas and challenges for future advancements in the sustainability of LPCE for hydrogen isotope separation, which include the optimization, scalability, techno-economic analysis, and life-cycle analysis of modified catalyst materials.

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“…The most convenient and quick way to extract high-purity D 2 O from ordinary water is distillation. A kind of fluorescent probe that detects D 2 O sensitively and rapidly in this range will speed up the real-time monitoring during the productive process of D 2 O . However, the general ways for detecting D 2 O include infrared laser (limits of detection, LOD = about 100 ppm), NMR spectroscopy (sensitivity > 500:1), and capillary electrophoresis (LOD < 59 ng) methods, − which are relatively complicated and time-consuming and require highly skilled operation.…”

Section: Introductionmentioning

confidence: 99%

Fluorescent Probes with Variable Intramolecular Charge Transfer: Constructing Closed-Circle Plots for Distinguishing D₂O from H₂O

Zhou,

Ye,

Zhang

et al. 2023

Anal. Chem.

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It is difficult to distinguish between H 2 O and D 2 O due to their very similar properties. Triphenylimidazole derivatives with carboxyl groups (TPI-COOH-2R) show intramolecular charge transfer that responds to polarities and pH of solvents. Here, a series of TPI-COOH-2R with very high photoluminescence quantum yields (73−98%) were synthesized to distinguish D 2 O from H 2 O by the method of wavelength-changeable fluorescence. In a mixed THF/water solution, the increase of H 2 O and D 2 O contents will separately induce different pendulum-type fluorescence variations and form plots of closed circles with the same starting and ending points from which a THF/water ratio that displays the most different emission wavelengths (up to 53 nm with an LOD of 0.064 vol %) can be determined to further distinguish D 2 O from H 2 O. This is proved to be originated from the various Lewis acidities between H 2 O and D 2 O. The results of theoretical calculations and experiments suggest that, for different substituent groups in TPI-COOH-2R, an appropriate electron-donating effect is beneficial to distinguish between H 2 O and D 2 O, while the electron-pulling effect is adverse. Moreover, because the potential hydrogen/deuterium exchange does not affect the as-responsive fluorescence, this method is reliable. And this work provides a new strategy for the design of fluorescent probes for D 2 O.

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Investigation Related to Hydrogen Isotopes Separation by Cryogenic Distillation

Cited by 23 publications

References 1 publication

A Facile Strategy for the Construction of Purely Organic Optical Sensors Capable of Distinguishing D₂O from H₂O

A Facile Strategy for the Construction of Purely Organic Optical Sensors Capable of Distinguishing D₂O from H₂O

A Mini Review on Liquid Phase Catalytic Exchange for Hydrogen Isotope Separation: Current Status and Future Potential

Fluorescent Probes with Variable Intramolecular Charge Transfer: Constructing Closed-Circle Plots for Distinguishing D₂O from H₂O

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Investigation Related to Hydrogen Isotopes Separation by Cryogenic Distillation

Cited by 23 publications

References 1 publication

A Facile Strategy for the Construction of Purely Organic Optical Sensors Capable of Distinguishing D2O from H2O

A Facile Strategy for the Construction of Purely Organic Optical Sensors Capable of Distinguishing D2O from H2O

A Mini Review on Liquid Phase Catalytic Exchange for Hydrogen Isotope Separation: Current Status and Future Potential

Fluorescent Probes with Variable Intramolecular Charge Transfer: Constructing Closed-Circle Plots for Distinguishing D2O from H2O

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Product

Resources

About

A Facile Strategy for the Construction of Purely Organic Optical Sensors Capable of Distinguishing D₂O from H₂O

A Facile Strategy for the Construction of Purely Organic Optical Sensors Capable of Distinguishing D₂O from H₂O

Fluorescent Probes with Variable Intramolecular Charge Transfer: Constructing Closed-Circle Plots for Distinguishing D₂O from H₂O