Article
Chemistry, Physical
Jun-Yi Wang, Yen-Hsun Chi, Jin-Hua Huang
Summary: Sequential addition of hydrazine in an EDTA-free bath resulted in the fabrication of high-performance composite Pd membranes with improved selectivity and cycling stability compared to membranes made using EDTA-contained bath.
Article
Chemistry, Physical
Yuxin Yang, Xinzhong Li, Xiao Liang, Ruirun Chen, Jingjie Guo, Hengzhi Fu, Dongmei Liu
Summary: Thin Pd membranes with a thickness of about 2 μm were prepared by a two-step electroless plating method on porous ceramic supports. The membranes exhibited stable and high hydrogen permeation flux and selectivity under different operating conditions. The effect of gas mixtures on the hydrogen permeation flux was studied, and the membranes also showed good resistance to attrition.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Environmental
Yuxin Yang, Xinzhong Li, Xiao Liang, Ruirun Chen, Jingjie Guo, Hengzhi Fu, Dongmei Liu
Summary: Thin Pd membranes were prepared using a two-step electroless plating method and the effects of heat treatment on membrane performance were investigated. The results showed that Pd membranes prepared with high-temperature heat treatment exhibited the best performance, with high hydrogen permeation flux and selectivity.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Applied
G. Adduci, D. Martinez-Diaz, D. Sanz-Villanueva, A. Caravella, J. A. Calles, R. Sanz, D. Alique
Summary: Electroless Pore-Plated (ELP-PP) membranes were successfully utilized in a membrane reactor to produce hydrogen by acetic acid steam reforming (AASR) with good resistance. The combination of catalysts and ELP-PP membranes improved product distribution and selectivity for AASR.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Engineering, Chemical
Ruonan Zhang, Yanchao Xu, Liguo Shen, Renjie Li, Hongjun Lin
Summary: This study proposes a novel strategy that combines membrane separation with in situ electrocoagulation for efficient separation of oil-in-water emulsion. A nickel functionalized fabric membrane is prepared through a low-cost and facile route, exhibiting high permeate flux, separation efficiencies, and stability. The coupled electrocoagulation-membrane separation system achieved high rejection and flux for oil/water emulsion separation. This study reveals the promising technique of the proposed system for oil/water separation.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Review
Engineering, Environmental
Samukeliso Dube, Joshua Gorimbo, Mahluli Moyo, Chike George Okoye-Chine, Xinying Liu
Summary: Membrane technology is highly valued in hydrogen purification systems, with particular focus on developing stable and selective Ni-based membranes. These membranes have attracted attention due to their high-temperature tolerance and low cost. Extensive studies have investigated the solubility, diffusivity, and permeability of nickel to hydrogen. This review provides a comprehensive overview of the synthesis, applications, and catalytic effects of Ni-based membranes in hydrogen purification systems. Further research is needed to explore the potential opportunities offered by catalytic nickel-based membranes, especially in multi-component systems.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Soomin Lim, Edoardo Magnone, Min Chang Shin, Jeong Won Kang, Kwan-Young Lee, Chang-Hun Jeong, Jung Hoon Park
Summary: The scalability of palladium-coated Al2O3 hollow fiber membranes for hydrogen separation was investigated. By testing different configurations and conditions, it was found that the advanced membrane module achieved higher hydrogen flux at higher temperatures and pressures, while maintaining high hydrogen purity.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Engineering, Chemical
Renjie Li, Linhua Rao, Jianzhen Zhang, Liguo Shen, Yanchao Xu, Xiujia You, Bao-Qiang Liao, Hongjun Lin
Summary: A new conception/strategy of in-situ electroflotation driven by hydrogen evolution reaction (HER) combined with a polypyrrole (PPy)-Ni-modified fabric membrane was proposed for efficient oil/water separation. The Ni-decorated fabric membrane exhibited superhydrophilicity, underwater superoleophobicity and excellent electrical conductivity, serving as cathode for HER. The optimized electroflotation process efficiently separated oil/water emulsion with high permeation flux and oil rejection, showing strong application significance in treating oily wastewater.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Chemical
D. Martinez-Diaz, D. Martinez del Monte, E. Garcia-Rojas, D. Alique, J. A. Calles, R. Sanz
Summary: The study introduces the use of Ordered Mesoporous Ceria (OMC) particles as an intermediate layer to enhance the permeation properties of Electroless Pore-Plated (ELP-PP) Pd composite membranes. This approach allows for the preparation of defect-free and thin Pd films on stainless steel supports, resulting in increased H-2 permeance and high selectivity.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
M. Salome Macedo, N. Acha Uriarte, M. A. Soria, Luis M. Madeira, J. A. Calles, R. Sanz, D. Alique
Summary: This study investigates the use of different sizes of CeO2 particles to generate an intermediate layer and facilitate the deposition of a thin Pd-film on H-2 selective membranes. Membrane M demonstrates the best performance in terms of H-2 permeance, and the stability of the membranes is high regardless of the particle size.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
Sinem Kilic, Meltem Dogan, Saliha Cetinyokus
Summary: The aim of this study was to synthesize PdCu alloy membranes with a firm, thin, and fcc phase structure that are resistant to sulfur compounds and selectively permeable to hydrogen. The electroless plating technique was used to create an osmotic flux during the coating process. The results showed that the osmotic flux had a positive effect on the structure and hydrogen selectivity of the prepared alloy membranes. The membranes synthesized with osmotic flux exhibited low hydrogen flux and high selectivity values.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Chemistry, Physical
D. Sanz-Villanueva, D. Alique, A. J. Vizcaino, J. A. Calles, R. Sanz
Summary: This study investigates the use of TiO2-based particles as an intermediate layer for the fabrication of fully dense Pd membranes by Electroless Pore Plating. The results show that doping the ceramic particles with Pd nuclei prior to incorporation onto the porous support can reduce the Pd thickness and improve mechanical stability. However, some palladium penetration is observed in the porous structure, which affects the H-2 permeance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Applied
Eleonora Tosto, David Martinez-Diaz, Raul Sanz, Giulia Azzato, Jose Antonio Calles, Jose Antonio Medrano, Ekain Fernandez, David Alfredo Pacheco Tanaka, Fausto Gallucci, David Alique, Alessio Caravella
Summary: This study demonstrates the application of systematic experimental analysis to estimate the paired effects of concentration polarization and inhibition in hydrogen permeation through diverse supported Pd-based membranes. By fabricating and testing different membranes, the influence under various conditions was evaluated. The results highlight the importance of taking these detrimental phenomena into account in designing ultra-thin membrane equipment.
FUEL PROCESSING TECHNOLOGY
(2021)
Article
Electrochemistry
Chol-Man Pak, Un-Chol Han, Hye-Jong Kang, Chang-Bong Ri, Yong-Nyo Jo, Jin-Song Kim, Kwang-Il Ri
Summary: Equations for metallic ion concentration in electroless plating solution have been derived and used to predict the impact of plating parameters on membrane composition in Pd-Ag electroless plating. Experimental results showed increased deposition of palladium with higher Na(2)EDTA and pH levels, while decreased temperature.
RUSSIAN JOURNAL OF ELECTROCHEMISTRY
(2021)
Article
Engineering, Chemical
Xichao Sun, Xinyan Wang, Jiao Li, Lilan Huang, Haibin Sun, Yunjie Hao, Linzhan Bai, Jian Pan, Xueli Gao
Summary: A durable superhydrophobic electrospun carbon fiber (CF/Ni/F) membrane was successfully prepared in this study for highly-efficient oil-water separation. By increasing the roughness and reducing the surface energy of the membrane, it exhibited excellent performance in harsh environments.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)