Operational analysis of a liquid phase catalytic exchange column for a detritiation of heavy water

Kim, K.R.; Lee, M.S.; Paek, Seungwoo; Yim, Sung Paal; Ahn, Do-Hee; Chung, Hongsuk

doi:10.1016/j.seppur.2006.10.018

Cited by 15 publications

(3 citation statements)

References 2 publications

(2 reference statements)

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“…For instance, Li et al (2019)'s research revealed that the optimal reaction temperature for the LPCE process utilizing a Pt/C/PTFE catalyst falls within the range of 60-80 °C [37]. This discovery is consistent with other studies indicating that the ideal temperature for an LPCE process employing this catalyst also lies within this interval [40,64,65]. At lower temperatures, thermodynamic analysis corresponds well with experimental results, indicating that the separation efficiencies are primarily governed by equilibrium factors.…”

Section: Operating Temperaturesupporting

confidence: 58%

“…This observation aligns with findings from other studies, which also show that the ideal temperature for LPCE varies depending on the G/L ratio. According to the results, as the G/L ratio increases, the optimal temperature decreases [37,64]. It is essential to conduct thorough experimental investigations considering factors such as catalyst type, operating temperature, and reactor design to determine the ideal G/L ratios for the specific LPCE systems.…”

Section: Operating Temperaturementioning

confidence: 99%

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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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Section: Operating Temperaturesupporting

confidence: 58%

Section: Operating Temperaturementioning

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

View full text Add to dashboard Cite

show abstract

“…Well-proven processes for the treatment of tritiated water use water distillation and water/gas catalytic exchange that, in turn, could be combined with electrolysis [1][2][3][4][5][6][7][8][9][10]. Although these processes are characterised by large energy consumption (heat and/or electricity), they rely on well-developed technology and have been applied worldwide in several plants.…”

Section: Introductionmentioning

confidence: 99%

Gas Chromatography and Thermal Cycling Absorption Techniques for Hydrogen Isotopes Separation in Water Detritiation Systems

Tosti

2023

Hydrogen

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This work introduces state-of-the-art water detritiation processes and discusses the main technologies and materials adopted. Focus is given to the gas chromatography (GC) and the thermal cycling absorption process (TCAP), which are studied as potential back-end technologies for tritium recovery through a water detritiation system designed for a small-scale unit. GC and the TCAP are evaluated critically in order to establish their applicability for the final purification of the DT stream recovered at the bottom of the cryo-distillation column of a water detritiation unit. Both solutions (GC and the TCAP with an inverse column) exhibit safe and feasible operation modes and are characterised by a good technological level; furthermore, both of these processes meet the main design specifications required by the proposed application. However, the use of GC is preferred, since this system can operate with modest temperature cycling and producing streams (D2 and T2) of better purity.

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Preparation and characterization of hydrophobic platinum-doped carbon aerogel catalyst for hydrogen isotope separation

Singh

et al. 2014

Bull Mater Sci

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We report preparation of hydrophobic platinum-doped carbon aerogel (PtCA) catalyst and its characterization for catalytic exchange reactions between hydrogen isotopes. The PtCA powder was synthesized by sol-gel polymerization method, mixed with colloidal PTFE solution, and coated on Dixon rings to obtain hydrophobic catalyst. The Pt cluster size in PtCA powder was observed to vary from 3 to 5 nm for a change in resorcinol to alkali molar ratio in synthesis solution from 20 to 200. Transmission electron microscopy of powder showed that the Pt clusters were uniformally dispersed and Pt 0 metallic content estimated by X-ray photoelectron spectroscopy (XPS) was found to be of ~ 70%. The catalytic activity was found to depend on Pt cluster size and was higher for smaller cluster size. For the smallest achieved Pt cluster size of 3 nm, catalytic activity of ~ 0⋅8 m 3 (STP) s-1 m-3 was obtained for hydrogen isotope exchange in atmospheric pressure conditions.

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Operational analysis of a liquid phase catalytic exchange column for a detritiation of heavy water

Cited by 15 publications

References 2 publications

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

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

Gas Chromatography and Thermal Cycling Absorption Techniques for Hydrogen Isotopes Separation in Water Detritiation Systems

Preparation and characterization of hydrophobic platinum-doped carbon aerogel catalyst for hydrogen isotope separation

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