Improvement of Pt/C/PTFE Catalyst Type Used for Hydrogen Isotope Separation

Vasut, Felicia; Preda, Adelina; Zamfirache, Marius; Bornea, Anisia; Ștefănescu, Ioan; Pearsica, Claudia

doi:10.13182/fst08-a1848

Cited by 14 publications

(3 citation statements)

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“…Catalysts from additional developers have recently been subjected to testing. Active work on catalyst development/testing, process optimization, demonstration testing, and new commercial production facilities have been reported at sites in Russia, Germany, the United Kingdom (UK); Korea, Romania, and China, , (Braet and Bruggeman 2003), (Cristescu et al 2002), , (Cristescu et al 2006), , (Alekseev et al 2003), (Alekseev et al 2002), (Fedorchenko et al 2001), (Fedorchenko et al 2005), (Fedorchenko et al 2007), (Ying 2008), (Vasut 2008), (Son 2007), (Shmayda, C. R. 2007).…”

Section: Hto => Ht + 12 Ozmentioning

confidence: 99%

2009 Evaluation of Tritium Removal and Mitigation Technologies for Wastewater Treatment

Kj¹,

Dj²,

Ge³

2009

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Section: Hto => Ht + 12 Ozmentioning

confidence: 99%

2009 Evaluation of Tritium Removal and Mitigation Technologies for Wastewater Treatment

Kj¹,

Dj²,

Ge³

2009

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“…1 Due to its lower energy consumption and higher equilibrium separation factor, LPCE has been widely applied in producing and upgrading heavy water, removing tritium from light water or heavy water, and recovering tritium from fusion reactors. [1][2][3][4][5] Platinum is usually the most active metal used in the hydrophobic catalysts of LPCE, such as metallic oxide supported Pt catalysts, [6][7][8] Pt/C/polytetrauoroethylene (PTFE), Pt/ PTFE, [9][10][11][12] and Pt/SDB. [1][2][3][4][5] Platinum is usually the most active metal used in the hydrophobic catalysts of LPCE, such as metallic oxide supported Pt catalysts, [6][7][8] Pt/C/polytetrauoroethylene (PTFE), Pt/ PTFE, [9][10][11][12] and Pt/SDB.…”

Section: Introductionmentioning

confidence: 99%

“…[2][3][4] In LPCE, an efficient and stable hydrophobic catalyst plays a key role in the catalytic exchange process. [1][2][3][4][5] Platinum is usually the most active metal used in the hydrophobic catalysts of LPCE, such as metallic oxide supported Pt catalysts, [6][7][8] Pt/C/polytetrauoroethylene (PTFE), Pt/ PTFE, [9][10][11][12] and Pt/SDB. [13][14][15] However, the metallic oxide supported Pt catalysts usually suffer strong mass-transfer limitations and catalyst poisoning when contacted with liquid water.…”

Section: Introductionmentioning

confidence: 99%

Effects of residual double bonds on the catalytic activity and stability of Pt/SDB hydrophobic catalysts

Liu

Gou

et al. 2015

RSC Adv.

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Pt/SDB hydrophobic catalysts, platinum supported on a cross-linked styrene-divinyl benzene copolymer (SDB), were prepared by an impregnating method. The results indicated that the content of the residual double bonds was positively proportional to the amount of divinyl benzene (DVB) and negatively proportional to the amount of initiator. When the molar ratio of DVB to St was 1 : 1, the content of the residual double bonds reached a highest value of 1.248 mmol g À1 . The influences of the contents of residual double bonds on the loading amounts of Pt, as well as the catalytic activity and stability of Pt/SDB catalysts were investigated. Performance tests demonstrated that the loading amounts of Pt increased correspondingly, as the contents of residual double bonds increased. Moreover, Pt/SDB with a higher content of residual double bonds generally had a higher column efficiency and a better stability.Interestingly, the column efficiencies of Pt/SDB with a highest content of residual double bond were all above 90% under all experiment conditions.

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Bifunctionally Hydrophobic MOF‐Supported Platinum Catalyst for the Removal of Ultralow Concentration Hydrogen Isotope

Heo,

Jang,

Jeong

et al. 2024

Energy & Environ Materials

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Water often presents significant challenges in catalysts by deactivating active sites, poisoning the reaction, and even degrading composite structure. These challenges are amplified when the water participates as a reactant and is fed as a liquid phase, such as trickle bed‐type reactors in a hydrogen‐water isotope exchange (HIE) reaction. The key balance in such multiphase reactions is the precise control of catalyst design to repel bulk liquid water while diffusing water vapor. Herein, a platinum‐incorporated metal‐organic framework (MIL‐101) based bifunctional hydrophobic catalyst functionalized with long alkyl chains (C12, dodecylamine) and further manufactured with poly(vinylidene fluoride), Pt@MIL‐101‐12/PVDF, has been developed which can show dramatically improved catalytic activity under multi‐phase reactions involving hydrogen gas and liquid water. Pt@MIL‐101‐12/PVDF demonstrates enhanced macroscopic water‐blocking properties, with a notable reduction of over 65% in water adsorption capacity and newly introduced liquid water repellency, while exhibiting a negligible increase in mass transfer resistance, i.e., bifunctional hydrophobicity. Excellent catalytic activity, evaluated via HIE reaction, and its durability underscore the impact of bifunctional hydrophobicity. In situ DRIFTS analysis elucidates water adsorption/desorption dynamics within the catalyst composite, highlighting reinforced water diffusion at the microscopic level, affirming the catalyst's bifunctionality in different length scales. With demonstrated radiation resistance, Pt@MIL‐101‐12/PVDF emerges as a promising candidate for isotope exchange reactions.

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Improvement of Pt/C/PTFE Catalyst Type Used for Hydrogen Isotope Separation

Cited by 14 publications

References 1 publication

2009 Evaluation of Tritium Removal and Mitigation Technologies for Wastewater Treatment

2009 Evaluation of Tritium Removal and Mitigation Technologies for Wastewater Treatment

Effects of residual double bonds on the catalytic activity and stability of Pt/SDB hydrophobic catalysts

Bifunctionally Hydrophobic MOF‐Supported Platinum Catalyst for the Removal of Ultralow Concentration Hydrogen Isotope

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