Ultrathin layered Pd/PBI–HFA composite membranes for hydrogen separation

Kong, Seong Young; Kim, Da Hye; Henkensmeier, Dirk; Kim, Hyoung Juhn; Ham, Hyung Chul; Han, Jonghee; Yoon, Sung Pil; Yoon, Chang Won; Choi, Shi‐Hoon

doi:10.1016/j.seppur.2017.02.033

Cited by 16 publications

(4 citation statements)

References 27 publications

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“…Numerous porous materials, such as Vycor glass [ 81 , 82 ], sintered metals [ 71 , 78 , 83 ], a wide variety of ceramics [ 53 , 71 , 84 , 85 ] and even polymers [ 86 , 87 , 88 ], can be used as supporting materials for the H 2 -selective layer. The most relevant attributes of supports to be selected include porosity properties (mainly average porosity and pore sizes distribution), surface roughness and mechanical, chemical and thermal stabilities [ 89 ].…”

Section: Membrane Supportsmentioning

confidence: 99%

Review of Supported Pd-Based Membranes Preparation by Electroless Plating for Ultra-Pure Hydrogen Production

et al. 2018

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In the last years, hydrogen has been considered as a promising energy vector for the oncoming modification of the current energy sector, mainly based on fossil fuels. Hydrogen can be produced from water with no significant pollutant emissions but in the nearest future its production from different hydrocarbon raw materials by thermochemical processes seems to be more feasible. In any case, a mixture of gaseous compounds containing hydrogen is produced, so a further purification step is needed to purify the hydrogen up to required levels accordingly to the final application, i.e., PEM fuel cells. In this mean, membrane technology is one of the available separation options, providing an efficient solution at reasonable cost. Particularly, dense palladium-based membranes have been proposed as an ideal chance in hydrogen purification due to the nearly complete hydrogen selectivity (ideally 100%), high thermal stability and mechanical resistance. Moreover, these membranes can be used in a membrane reactor, offering the possibility to combine both the chemical reaction for hydrogen production and the purification step in a unique device. There are many papers in the literature regarding the preparation of Pd-based membranes, trying to improve the properties of these materials in terms of permeability, thermal and mechanical resistance, poisoning and cost-efficiency. In this review, the most relevant advances in the preparation of supported Pd-based membranes for hydrogen production in recent years are presented. The work is mainly focused in the incorporation of the hydrogen selective layer (palladium or palladium-based alloy) by the electroless plating, since it is one of the most promising alternatives for a real industrial application of these membranes. The information is organized in different sections including: (i) a general introduction; (ii) raw commercial and modified membrane supports; (iii) metal deposition insights by electroless-plating; (iv) trends in preparation of Pd-based alloys, and, finally; (v) some essential concluding remarks in addition to futures perspectives.

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Section: Membrane Supportsmentioning

confidence: 99%

Review of Supported Pd-Based Membranes Preparation by Electroless Plating for Ultra-Pure Hydrogen Production

et al. 2018

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“…Numerous porous materials, such as Vycor glass [81,82], sintered metals [71,78,83], a wide variety of ceramics [53,71,84,85] and even polymers [86][87][88], can be used as supporting materials for the H 2 -selective layer. The most relevant attributes of supports to be selected include porosity properties (mainly average porosity and pore sizes distribution), surface roughness and mechanical, chemical and thermal stabilities [89].…”

Section: Membrane Supportsmentioning

confidence: 99%

Pd-based Membranes

2019

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He graduated with a Ph.D. from the Technical University of Eindhoven in 2005 within the field of process development and started at SINTEF shortly thereafter. His research interests span from process chemistry, membrane technology, hydrogen production, CO2 capture, and energy efficiency, to gas separation technologies. He has 54 publications in international peer-reviewed journals (h-index = 21) and has contributed to 10 book chapters and >150 conferences. Alessio Caravella is currently Associate Professor chairing the courses of Thermodynamics and Chemical Reactors Design at the Dept. of Environmental and Chemical Engineering (DIATIC) of the University of Calabria (Italy), as well as Associate Researcher at the Institute on Membrane Technology (ITM-CNR, Italy). His main research activities focus on the experimental analysis and simulation of hierarchical catalytic structures and membrane-assisted reaction and separation devices, with a particular regard to the application of Pd-based membranes devices to hydrogen purification. Recently, he is also investigating the adsorption properties of zeolites and coordination polymer particles for hydrogen separation from light gases. vii

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“…As Pd is too expensive as a monolithic membrane, especially in large-scale applications, many studies have tried to reduce the cost of Pd-based membranes. The usual method is to use a support material such as dense or porous metals, ceramics, or polymers [ 17 , 18 , 19 , 20 , 21 , 22 ] because this approach increases the mechanical strength of the membrane while decreasing the amount of Pd. Furthermore, body-centered cubic (BCC) metals are promising materials because they have a better ability to permeate H 2 than face-centered cubic (FCC) metals [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study of Pd/Ta and PdCu/Ta Composites for Thermocatalytic Hydrogen Permeation

Ryu

Badakhsh

et al. 2022

Membranes

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The development of stable and durable hydrogen (H2) separation technology is essential for the effective use of H2 energy. Thus, the use of H2 permeable membranes, made of palladium (Pd), has been extensively studied in the literature. However, Pd has considerable constraints in large-scale applications due to disadvantages such as very high cost and H2 embrittlement. To address these shortcomings, copper (Cu) and Pd were deposited on Ta to fabricate a composite H2 permeable membrane. To this end, first, Pd was deposited on a tantalum (Ta) support disk, yielding 7.4 × 10−8 molH2 m−1 s−1 Pa−0.5 of permeability. Second, a Cu–Pd alloy on a Ta support was synthesized via stepwise electroless plating and plasma sputtering to improve the durability of the membrane. The use of Cu is cost-effective compared with Pd, and the appropriate composition of the PdCu alloy is advantageous for long-term H2 permeation. Despite the lower H2 permeation of the PdCu/Ta membrane (than the Pd/Ta membrane), about two-fold temporal stability is achieved using the PdCu/Ta composite. The degradation process of the Ta support-based H2 permeable membrane is examined by SEM. Moreover, thermocatalytic H2 dissociation mechanisms on Pd and PdCu were investigated and are discussed numerically via a density functional theory study.

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Ultrathin layered Pd/PBI–HFA composite membranes for hydrogen separation

Cited by 16 publications

References 27 publications

Review of Supported Pd-Based Membranes Preparation by Electroless Plating for Ultra-Pure Hydrogen Production

Review of Supported Pd-Based Membranes Preparation by Electroless Plating for Ultra-Pure Hydrogen Production

Pd-based Membranes

Experimental and Numerical Study of Pd/Ta and PdCu/Ta Composites for Thermocatalytic Hydrogen Permeation

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