Development of catalytic membranes over PdAu selective films for hydrogen production through the dry reforming of methane

Fontana, Agustina Dalla; Faroldi, Betina María Cecilia; Cornaglia, Laura María; Tarditi, Ana María

doi:10.1016/j.mcat.2018.07.018

Cited by 10 publications

(6 citation statements)

References 34 publications

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“…Using a membrane reactor is one approach to decrease the reaction temperature since the H 2 production is promoted due to causing the non-equilibrium state by H 2 separation from the reaction space. According to the most well-regarded research, it has been observed that a Pd membrane can be adopted for CH 4 dry reforming [18][19][20][21][22][23][24][25][26][27][28]. Alloy membranes, e.g., Pd/Ag [18][19][20], Pd/Au [21,22] and Pd/Cu [23,24], have been applied generally.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Hydrogen Production for a Solid Oxide Fuel Cell System Using a Biogas Dry Reforming Membrane Reactor with Ni and Ni/Cr Catalysts

Nishimura

Hayashi

Ito

et al. 2023

Fuels

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The present study aims to analyze the performance characteristics of the biogas dry reforming process conducted in a membrane reactor using Ni/Cr catalysts and to compare these characteristics with those obtained using pure Ni catalysts. The effect of the pre-set reaction temperature, the molar ratio of CH4:CO2 and the pressure difference between the reaction chamber and the sweep chamber on the characteristics of biogas dry reforming is analyzed. In the present work, the molar ratio of the supplied CH4:CO2 is varied to 1.5:1, 1:1 and 1:1.5. In this case, CH4:CO2 = 1.5:1 simulates a biogas. The pressure difference between the reaction chamber and the sweep chamber is varied to 0 MPa, 0.010 MPa and 0.020 MPa. The reaction temperature is changed to 400 °C, 500 °C and 600 °C. It is revealed that the highest concentration of H2 is achieved using a Ni/Cr catalyst when the molar ratio of CH4:CO2 is 1.5:1 at the differential pressure of 0.010 MPa and the reaction temperature of 600 °C. Under this condition, the H2 yield, H2 selectivity and thermal efficiency are 12.8%, 17.5% and 174%, respectively. The concentration of the H2 produced using a Ni/Cr catalyst is larger than that produced using a Ni catalyst regardless of the pre-set reaction temperature, the molar ratio of CH4:CO2 and the differential pressure.

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Section: Introductionmentioning

confidence: 99%

Performance Analysis of Hydrogen Production for a Solid Oxide Fuel Cell System Using a Biogas Dry Reforming Membrane Reactor with Ni and Ni/Cr Catalysts

Nishimura

Hayashi

Ito

et al. 2023

Fuels

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“…This study has investigated Ni/Cr alloy catalyst. Though Ni is a popular catalyst for DR, Ru is also used for DR [15][16][17]. There is no report on Ni/Ru/Cr alloy catalyst used for not only DR but also membrane reactor.…”

Section: Comparison Of Assessment Factor Among the Investigated Exper...mentioning

confidence: 99%

Impact of Thickness of Pd/Cu Membrane on Performance of Biogas Dry Reforming Membrane Reactor Utilizing Ni/Cr Catalyst

Nishimura,

Ito,

Ichikawa

et al. 2024

Preprint

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This study focuses on a biogas dry reforming to produce H2. Biogas contains CO2 of 40 vol% approximately, indicating that the efficiency of the power generation is reduced because of the smaller heating value compared with a natural gas. The authors have proposed the combination system consisting of biogas dry reforming reactor and solid oxide fuel cell (SOFC). Since a biogas dry reforming is an endothermic reaction, this study adopts a membrane reactor which can be operated by causing the non-equilibrium state with H2 separation from the reaction space. This study aims to clarify the impact of thickness of Pd/Cu membrane on the characteristics of the biogas dry reforming membrane reactor using Pd/Cu membrane and Ni/Cr catalyst. The impact of the operation temperature, the molar ratio of CH4:CO2 and the differential pressure between the reaction chamber and the sweep chamber on the characteristics of the biogas dry reforming membrane reactor using Pd/Cu membrane and Ni/Cr catalyst is examined changing the thickness of Pd/Cu membrane. As a result, the highest concentration of H2 is 122711 ppmV which is obtained in case of CH4:CO2 =1:1 at the reaction temperature of 600 ℃ and the differential pressure of 0 MPa using the Pd/Cu membrane whose thickness of 40 m.

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“…Moreover, the reducer concentration acts as a limiting factor in determining efficiency and rate of the plating. Sensitization and activation also play a significant role in improving plating efficiency, but at the same time makes the fabrication process prone to contamination from impurities, which results in uneven coating and lowers the plating rate. , …”

Section: Fabrication Processes Of Pd-based Membranesmentioning

confidence: 99%

“…Sensitization and activation also play a significant role in improving plating efficiency, but at the same time makes the fabrication process prone to contamination from impurities, which results in uneven coating and lowers the plating rate. 110,111 4.2. Chemical Vapor Deposition (CVD).…”

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confidence: 99%

Palladium-Alloy Membrane Reactors for Fuel Reforming and Hydrogen Production: A Review

et al. 2021

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Hydrogen has a potential to be a clean energy carrier that emits only water after combustion and can be produced from diverse feedstocks. Hydrogen has much better combustion characteristics in conventional combustion systems and higher energy efficiency when used with fuel cells. More than 75 million tons of hydrogen are currently produced primarily using fossil fuels as feedstock via steam methane reforming processes. Steam methane reforming is the mature technology for producing hydrogen and when coupled with CO2 capture can help address climate challenges. Inorganic palladium (Pd) membranes have demonstrated great potential to separate hydrogen due to their stability and high selectivity for hydrogen. In this review, several methods of fabricating Pd-alloy membranes are discussed and compared in terms of membrane stability and selectivity of hydrogen. Such methods include electroless plating (ELP), chemical vapor deposition (CVD), physical vapor deposition (PVD), and electroplating deposition (EPD). The permeability of hydrogen in different Pd-based alloy membranes are presented and compared. Focus has been made, in this review, on Pd–Ag, Pd–Cu, Pd–Au, and Pd–Ru alloys. The effects of impurities (H2S, CO, O2, and CO2) on performance of different Pd-based alloy membranes are also investigated. Moreover, the subject of using Pd-membrane reactors for fuel reforming and H2 production is investigated in detail based on numerous experimental and numerical studies in the literature, considering different membrane reactor designs: axial-flow tubular, radial-flow tubular, axial-flow spherical, packed-bed, fluidized bed, and slurry bubble column. The performance of Pd-membranes in such reactors for hydrogen production is compared, and the effects of temperature, pressure, H2O/CH4 ratio, and residence time on reformer performance are also investigated. Finally, the use of computational methods, particularly, density functional theory (DFT), to complement well-established experimental methods for studying the diffusion of H and its isotopes in different metals is reviewed. The review concludes with some insights into future work to bring Pd-membrane reactors to the level required for hydrogen production at the commercial level.

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Development of catalytic membranes over PdAu selective films for hydrogen production through the dry reforming of methane

Cited by 10 publications

References 34 publications

Performance Analysis of Hydrogen Production for a Solid Oxide Fuel Cell System Using a Biogas Dry Reforming Membrane Reactor with Ni and Ni/Cr Catalysts

Performance Analysis of Hydrogen Production for a Solid Oxide Fuel Cell System Using a Biogas Dry Reforming Membrane Reactor with Ni and Ni/Cr Catalysts

Impact of Thickness of Pd/Cu Membrane on Performance of Biogas Dry Reforming Membrane Reactor Utilizing Ni/Cr Catalyst

Palladium-Alloy Membrane Reactors for Fuel Reforming and Hydrogen Production: A Review

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