The performance of a trickle-bed reactor packed with a Pt/SDBC catalyst mixture for the CECE process

Paek, Seungwoo; Ahn, Do-Hee; Choi, Heui-Joo; Kim, Kwang-Rag; Lee, Minsoo; Yim, Sung Paal; Chung, Hongsuk; Song, Kyu‐Min; Sohn, S.H.

doi:10.1016/j.fusengdes.2007.07.001

Cited by 23 publications

(10 citation statements)

References 2 publications

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“…Therefore, combined electrolysis catalytic exchange (CECE) is commonly used. In CECE, hydrogen generated from electrolysis is passed through a Pt catalysis column [14].…”

Section: Introductionmentioning

confidence: 99%

Deuterium isotope separation by combined electrolysis fuel cell

Ogawa

Tanii

Dawson

et al. 2018

Energy

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The framework about combined electrolysis fuel cell (CEFC) was reported previously [H. Matsushima et al., Energy, 2005; 30; 2413]. The purpose of the present study focused on measuring the separation factor and the energy reduction by assembling CEFC system. The separation of deuterium was studied with a 1-M KOH electrolyte containing 10 at% deuterium. Polarization plots of alkaline water electrolysis (AWE) revealed relationships between the catalytic activity of the hydrogen evolution reaction and the deuterium separation factor. The power loss was mainly attributed to gas bubble evolution. For polymer electrolyte fuel cells (PEFCs) with a Pt catalyst, approximately 21% of the electrical energy could be recovered by reusing hydrogen gas produced by the AWE. Furthermore, the PEFC could efficiently dilute protium in the gas phase, resulting in a high separation factor of 30.2 for the CEFC.

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“…Therefore, combined electrolysis catalytic exchange (CECE) is commonly used. In CECE, hydrogen generated from electrolysis is passed through a Pt catalysis column [14].…”

Section: Introductionmentioning

confidence: 99%

Deuterium isotope separation by combined electrolysis fuel cell

Ogawa

Tanii

Dawson

et al. 2018

Energy

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“…Many researchers have studied various isotope-separation methods, including water distillation [1], chemical exchange [2], water electrolysis [3,4] and combined electrolysis catalytic exchange (CECE) [5,6]. The electrolysis method yields the most effective separation but the process consumes enormous amounts of electricity.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen isotope separation with an alkaline membrane fuel cell

Ogawa

Matsushima

Ueda

2016

Electrochemistry Communications

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The separation of deuterium from a hydrogen-deuterium mixture was carried out using an alkaline membrane fuel cell (AMFC) with a Pt catalyst. This novel use of an AMFC to separate deuterium from a mixture of H 2 and D 2 was demonstrated by the production of deuterium-enriched water during power generation by the AMFC. The deuterium separation factor increased with output current (i) to a maximum value of 1.64 attained at i = 30 mA cm −2 .

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“…[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. 16 Generally, Pt/PTFE has a low stability and a short service life due to the weak interactions between Pt and PTFE.…”

Section: Introductionmentioning

confidence: 99%

“…18 It is noted that Pt/SDB hydrophobic catalysts usually have a good stability and a high catalytic activity, which have become the focus of research and application. [19][20][21][22][23] For Pt/SDB, synthesis of a hydrophobic SDB carrier with a large surface area is the most important. SDB carrier is usually synthesized via a copolymerization of St and DVB, of which the mechanisms and kinetics were previously studied.…”

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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The performance of a trickle-bed reactor packed with a Pt/SDBC catalyst mixture for the CECE process

Cited by 23 publications

References 2 publications

Deuterium isotope separation by combined electrolysis fuel cell

Deuterium isotope separation by combined electrolysis fuel cell

Hydrogen isotope separation with an alkaline membrane fuel cell

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

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