Separation performance of foils from Pd—In(6%)—Ru(0.5%), Pd—Ru(6%), and Pd—Ru(10%) alloys and influence of CO2, CH4, and water vapor on the H2 flow rate through the test membranes

Didenko, L. P.; Sementsova, L. A.; Chizhov, P. E.; Babak, Valéry G.; Савченко, В. И.

doi:10.1007/s11172-016-1543-4

Cited by 10 publications

(3 citation statements)

References 13 publications

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“…In addition, water vapor can adversely affect the rate of H 2 withdrawal through the membrane, which is due to its adsorption on the surface of the membrane and a decrease in the number of surface centers available for dissociation of H 2 . It was shown in [36] that the negative effect of steam on the H 2 flow rate through a membrane in the form of a 30 μm thick foil of a Pd-In-Ru alloy increases with an increase in its content in the hydrogen mixture and a decrease in temperature. It is therefore necessary to minimize the excess steam.…”

Section: N нmentioning

confidence: 99%

Steam Reforming of n-Butane in Membrane Reactor with Industrial Nickel Catalyst and Foil Made of Pd-Ru Alloy

Didenko

Sementsova

Babak

et al. 2020

Membr. Membr. Technol.

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Steam reforming of n-butane has been studied in a membrane reactor at temperatures of 673-823 K, feed hourly space velocities of 1800 and 3600 h-1 , and steam/butane ratios of 3, 5 and 7. Under selected conditions, the steam conversion is accompanied by the formation of carbon deposits, whose yield decreases with increasing steam excess. However, with an increase in steam excess, its negative effect on H 2 recovery through the membrane increases. Comparative experiments with the "non-membrane" reaction at a constant steam/butane ratio equal to 5 have shown that butane conversion to the target products increases in the membrane reactor and the rate of carbon deposits formation decreases. When replacing the sweep gas by the vacuum conditions in the permeate side, there is a further decrease in the rate of carbon deposits formation and an increase in the butane conversion in the main reaction. With an increase in feed hourly space velocity from 1800 to 3600 h-1 , the rate of carbon deposits formation and its dependence on temperature increase. At an hourly space velocity of 1800 h-1 , the rate of formation of carbon deposits is two to three times lower and varies slightly with temperature. Under these conditions, the butane conversion is close to 100%; about 80% of H 2 formed is recovered from the reaction mixture, and at vacuum conditions in the permeate side, the H 2 recovery is 95%.

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Section: N нmentioning

confidence: 99%

Steam Reforming of n-Butane in Membrane Reactor with Industrial Nickel Catalyst and Foil Made of Pd-Ru Alloy

Didenko

Sementsova

Babak

et al. 2020

Membr. Membr. Technol.

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“…Some authors [48,50,51] described the advantages of using Pd-Ru-In alloy foils (0.5 wt % Ru, 6 wt % In) as membranes for hydrogen recovery; the advantages include the hydrogen permeability exceeding the permeability of a Pd-Ru alloy [48], fairly high strength properties, corrosion stability, and resistance to the effect of CO and CH 4 [50,51].…”

Section: Ethanol Steam Reforming In a Membrane Reactormentioning

confidence: 99%

“…The use of membranes provides the continuous selective removal of one of the products-hydrogenand thereby makes it possible to increase the alcohol conversion (thermodynamic equilibrium shift effect) [44][45][46][47]. Dense membranes of palladium (and Pd alloys) are hydrogen permeable; they are used in membrane reactors intended for the production and isolation of hydrogen containing no impurities [48][49][50][51][52].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Production by Ethanol Steam Reforming in the Presence of Pd-, Pt-, Ru-, and Ni-Containing Nanodiamonds in Conventional and Membrane Reactors

Mironova

Ермилова

Орехова

et al. 2019

Membr. Membr. Technol.

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Ethanol steam reforming (ESR) in the presence of bimetallic nanocatalysts containing Pd-Ru, Pd-Ni, Pt-Ru, and Pt-Ni alloys deposited on detonation nanodiamonds (DNDs) in conventional and membrane reactors has been studied. The effect of some ESR parameters, such as catalyst composition, water/ethanol molar ratio, and temperature, on the hydrogen yield has been studied. The highest hydrogen yield is achieved in a conventional reactor using a Pt-Ru/DND catalyst. In the case of the ESR process running in a membrane reactor and simultaneous removal of hydrogen through membranes made of Pd-Ru or Pd-Ru-In alloys, the hydrogen yield is higher than that obtained in ESR in a conventional reactor. The hydrogen recovery rate from the retentate zone is up to 46%, whereas a high-purity hydrogen stream is withdrawn from the permeate zone.

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Thin PdCu membrane for hydrogen purification from in-situ produced methane reforming complex mixtures containing H2S

Acha

Delft

Cambra

et al. 2018

Chemical Engineering Science

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Separation performance of foils from Pd—In(6%)—Ru(0.5%), Pd—Ru(6%), and Pd—Ru(10%) alloys and influence of CO2, CH4, and water vapor on the H2 flow rate through the test membranes

Cited by 10 publications

References 13 publications

Steam Reforming of n-Butane in Membrane Reactor with Industrial Nickel Catalyst and Foil Made of Pd-Ru Alloy

Steam Reforming of n-Butane in Membrane Reactor with Industrial Nickel Catalyst and Foil Made of Pd-Ru Alloy

Hydrogen Production by Ethanol Steam Reforming in the Presence of Pd-, Pt-, Ru-, and Ni-Containing Nanodiamonds in Conventional and Membrane Reactors

Thin PdCu membrane for hydrogen purification from in-situ produced methane reforming complex mixtures containing H2S

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