Palladium composite membrane fabricated on rough porous alumina tube without intermediate layer for hydrogen separation

Yu, Guanlong; Wang, Hongmei; Fan, Xianfeng; Zhou, Lidai; Chen, Qiangqiang

doi:10.1016/j.ijhydene.2017.01.226

Cited by 24 publications

(22 citation statements)

References 51 publications

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“…Different approaches have been used, such as, the use of activated particles with Pd nuclei for intermediate layers preparation [ 125 , 127 , 146 , 168 , 169 ]; catalysed anodic alumina surfaces to facilitate the Pd electroless plating [ 170 ]; the increase of nuclei deposition rate and rupture of conglomerates by applying ultrasounds [ 171 ]; the incorporation, decomposition and reduction of a palladium acetate solution in chloroform onto the surface [ 172 ]; or, directly, the generation of nano-sized Pd particles by direct reduction of a highly diluted solution with a mixture of ammonia-hydrazine [ 51 , 71 ]. However, up to date it has not been found a better solution and the classical method remains as the top choice for many researchers [ 28 , 46 , 161 ].…”

Section: Palladium Incorporation By Electroless Platingmentioning

confidence: 99%

“…However, the preparation of ultrathin palladium layers entails two main problems: (i) limitation of membrane mechanical resistance and (ii) difficulty to obtain films free of defects. The use of porous supports tries to overcome these problems and thus, to maintain adequate mechanical properties saving palladium [ 45 , 46 , 47 , 48 , 49 ].…”

Section: Introductionmentioning

confidence: 99%

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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: Palladium Incorporation By Electroless Platingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

et al. 2018

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“…A membrana M1, de paládio puro, com 1,3 m apresentou uma seletividade (de H2/N2) de 35, que apesar de ser baixa é maior do que a que foi obtida por Zhao et al (1998). O fluxo permeado por essa membrana foi de 0,389 mol/m 2 s, que é maior que os valores reportados por Pacheco Tanaka et al 2005e por Guo et al (2017).…”

Section: Conclusão E Sugestões Para Trabalhos Futurosunclassified

“…As condições usadas nessa deposição foram as apresentadas na Tabela 2. Concentrações e condições de deposição segundoGuo et al (2017). solução de prata, porém foi injetada na solução variando a taxa de adição no decorrer do tempo de reação, de acordo com a Tabela 6.Tabela 6 -Vazão de solução de prata adicionada à solução de deposição com o tempo de reação.…”

unclassified

“…Cabe ressaltar queGuo et al (2017) obtiveram menor fluxo permeado, mas obtiveram maior seletividade, ao utilizarem uma camada com uma espessura cerca de 5 vezes maior que a da membrana M1. A obtenção da camada mais espessa de paládio porGuo et al (2017) está provavelmente relacionada às características da superfície do suporte utilizado pelos autores. Esses Comparação de seletividade e fluxos de hidrogênio permeados através de membranas de Pd em suportes de alumina a 100 kPa.…”

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Análise experimental e modelagem da permeação de hidrogênio em membranas de paládio e de paládio-prata

Arzani¹

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Agradeço a Deus, de quem advêm todas as coisas, por me fornecer a vida, por me permitir reconhecer a bondade dele de me trazer até aqui e de ter colocado pessoas tão especiais em meu caminho. Agradeço aos meus pais, Rosana e João, e aos meus irmãos, Alessandro e Viviane, que sempre me incentivarem a seguir os meus sonhos e objetivos e nunca mediram esforços em meu favor. A todos os amigos que estiveram comigo nessa jornada, aqueles com quem compartilhei os primeiros meses do mestrado, que tornaram os momentos de estudo e a vida mais leves e divertidos. Meu agradecimento eterno àqueles que fizeram toda a diferença desse período e que vou levar para sempre no coração, Bruna, Érica, Igor, Karine, Laryssa, Luis, Olga, Roberta e Thais. A todos do NucBio, pela parceria, compreensão e companheirismo. A todos os "membraneiros", em especial Natália e Lidiane, pelos conhecimentos compartilhados, pelos materiais fornecidos, pela paciência e auxílio. Ao Altamirando Costa Ribeiro Neto pela ajuda prestada. Ao Rodolfo Brandão pelas consultorias técnicas, programas instalados e problemas resolvidos. À minha orientadora, Prof.ª Dr.ª Miria Hespanhol Miranda Reis por aceitar me orientar e por toda compreensão ao longo desses dois anos. Agradeço o apoio, ensinamentos, prontidão e confiança, que foram imprescindíveis para o meu crescimento acadêmico e pessoal. Agradeço também minha co-orientadora Prof.ª Dr.ª Vicelma Luiz Cardoso, por todas as ideias e dicas sempre que solicitadas. Aos professores membros da banca examinadora, Prof. Dr. Antonio Eduardo da Hora Machado e Prof.ª Dr.ª Fabiana Regina Xavier Batista, pelas contribuições.

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Influence of external mass transfer and support resistances for hydrogen permeation through composite palladium membranes

Arzani

Neto

Terra

et al. 2021

Env Prog and Sustain Energy

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Palladium membranes represent a suitable alternative to obtain high purity hydrogen for industrial applications. The modeling of hydrogen permeation through composite membranes is important to understand gas separation systems. Here, experimental and calculated hydrogen flux data through composite palladium/alumina membranes were compared. A dense palladium film of 2.4 μm thick was deposited on a porous support and the produced composite membrane presented infinite hydrogen/nitrogen selectivity. Experimental molecular hydrogen flux at 100 kPa and 723 K was 0.1015 ± 0.0009 mol m−2 s−1. Calculated molecular hydrogen fluxes with the conventional permeation model, without considering external mass transfer and support resistances, were at least 5.7 times greater than experimental data. However, calculated hydrogen flux was only 6.7% lower than the experimental flux at 100 kPa and 723 K when external mass transfer and support resistances were included in the conventional permeation model. Thus, external mass transfer resistances and the permeation through the porous support should be considered for a suitable description of hydrogen fluxes through composite palladium membranes.

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Palladium composite membrane fabricated on rough porous alumina tube without intermediate layer for hydrogen separation

Cited by 24 publications

References 51 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

Análise experimental e modelagem da permeação de hidrogênio em membranas de paládio e de paládio-prata

Influence of external mass transfer and support resistances for hydrogen permeation through composite palladium membranes

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