Review
Engineering, Chemical
Marjan Farnam, Hilmi bin Mukhtar, Azmi bin Mohd Shariff
Summary: This article provides a comprehensive overview of membrane technology for natural gas purification and other gas separation applications, discussing methods, materials, results, different membrane categories, and approaches to improve membrane performance. Various gas separation techniques in different membranes are considered, as well as techniques adopted by researchers to solve existing issues in membrane fabrication and performance.
CHEMBIOENG REVIEWS
(2021)
Article
Engineering, Chemical
Samira Mosleh, Mohammad Reza Mozdianfard, Ghader Khanbabaei
Summary: By embedding synthesized ZIF-8 nanoparticles and glassy polymer into the Pebax (R) 1657 matrix, the thermal and mechanical stabilities of the membrane were improved, resulting in an 88% increase in CO2 permeance.
CHEMICAL ENGINEERING & TECHNOLOGY
(2023)
Article
Engineering, Chemical
Md Rafiul Hasan, Andoni Moriones, Magdalena Malankowska, Joaquin Coronas
Summary: This research focuses on the recycling of mixed matrix membranes (MMMs) consisting of fillers, such as metal organic frameworks (MOFs), in a polymer matrix. The recovered products were characterized and compared with the fresh ones, demonstrating that the recycled fillers can be successfully applied in MMMs with similar performance.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Physical
Iman Salahshoori, Majid Namayandeh Jorabchi, Kamran Valizadeh, Amirhosein Yazdanbakhsh, Amir Bateni, Sebastian Wohlrab
Summary: In this study, molecular dynamics simulation was used to analyze the compatibility, miscibility, and mechanical behavior of different combinations of Pebax-1657 and three vinyl group polymers. The results showed that PVC and PVAc were the most polarizable and had the lowest chemical reactivities, while PVF and PVC had the highest and lowest chemical hardness values, respectively. The solubility parameters indicated that PVAc, PVC, and PVF were miscible with Px and reached the same glass transition temperature. The v (chi) parameters suggested that Px-PVAc and Px-PVF exhibited high and low miscibility, respectively. The mechanical properties of the blend polymers decreased when the content of PVAc, PVC, and PVF exceeded 30% wt.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Materials Science, Composites
Dimitrios Gkiliopoulos, Dimitrios Bikiaris, Doukas Efstathiadis, Konstantinos Triantafyllidis
Summary: The study evaluated the reinforcing efficiency of SBA-15-type mesoporous silica as an additive in epoxy polymers. The effects of silica loading and its physicochemical characteristics on the properties of glassy and rubbery epoxy mesocomposites were examined. The addition of up to 6 wt.% silica improved the properties of glassy polymers, while up to 9 wt.% silica improved the properties of rubbery polymers.
JOURNAL OF COMPOSITES SCIENCE
(2023)
Article
Engineering, Chemical
Matthew T. Webb, Lucas C. Condes, William J. Box, Harold G. Ly, Sepideh Razavi, Michele Galizia
Summary: This paper revisits, updates, and compares the experimental and numerical routes for determining the Hildebrand solubility parameter (δ) of polymers and small molecules. Best practices for experimental determination are provided, and Dynamic Light Scattering (DLS) is demonstrated as a viable alternative. The group contribution method is also improved, resulting in a mean absolute relative error of 9.0% in predicting solubility parameters.
JOURNAL OF MEMBRANE SCIENCE LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Marcello Monteleone, Giuseppe Barbieri, Paola Bernardo, Andrea Borgogno, Adele Brunetti, Gabriele Clarizia, Elisa Esposito, Johannes Carolus Jansen, Franco Tasselli, Elena Tocci, Ihab N. Odeh, J. R. Johnson, Karina K. Kopec, L. Giorno
Summary: Incorporating silver ions as ion complexes in the Pebax (R) 2533 matrix improves the long-term stability of facilitated transport membranes for olefin/paraffin separation without compromising permeability.
SEPARATION SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Jie Chen, Mariagiulia Longo, Alessio Fuoco, Elisa Esposito, Marcello Monteleone, Bibiana Comesana Gandara, Johannes Carolus Jansen, Neil B. McKeown
Summary: Dibenzomethanopentacene (DBMP) is a useful component for making Polymers of Intrinsic Microporosity (PIMs), which can be used to create efficient gas separation membranes. Compared to the archetypal PIM-1, DBMP incorporation enhances both gas permeability and ideal selectivity. Long-term studies show that DBMP-containing PIMs have less reduction in gas permeabilities during aging, making them attractive for fabricating membranes for efficient gas separations.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Review
Chemistry, Multidisciplinary
Paula Escamilla, Walter D. Guerra, Antonio Leyva-Perez, Donatella Armentano, Jesus Ferrando-Soria, Emilio Pardo
Summary: Since the emergence of metal-organic frameworks (MOFs), a wide range of exciting properties and applications have been reported, mainly due to their porous nature and rich host-guest chemistry. However, the potential rewards offered by other important features of MOFs have been largely unexplored. This feature outlines recent advances in using highly robust and crystalline oxamato- and oxamidato-based MOFs as reactors for the in situ preparation of well-defined catalytically active single atom catalysts (SACS), subnanometer metal nanoclusters (SNMCs), and supramolecular coordination complexes (SCCs).
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Paula Escamilla, Lucia Bartella, Sergio Sanz-Navarro, Rita Maria Percoco, Leonardo Di Donna, Mario Prejano, Tiziana Marino, Jesus Ferrando-Soria, Donatella Armentano, Antonio Leyva-Perez, Emilio Pardo
Summary: Beta-lactam antibiotics are commonly used for treating bacterial infections, but their efficacy is limited due to the emergence of resistant bacteria with beta-lactamase enzymes. This study introduces a novel Zn-based metal-organic framework (MOF) that can mimic the catalytic activity of beta-lactamases. The MOF degrades the four-membered beta-lactam ring of amoxicillin, which expands the number of MOFs capable of mimicking enzymatic processes.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Cristina Negro, Sergio Sanz-Navarro, Antonio Leyva-Perez, Donatella Armentano, Jesu Ferrando-Soria, Emilio Pardo
Summary: Understanding the host-guest chemistry in MOFs has great potential to develop novel porous materials with improved performances in fields such as heterogeneous catalysis. In this study, a family of three isoreticular MOFs derived from amino acids were synthesized and their catalytic activities in hemiketalization reactions were investigated. The results showed that a multivariate MOF prepared using equal percentages of amino acids exhibited the most efficient catalytic conversions. The good catalytic performance was attributed to the intrinsic heterogeneity of the multivariate MOF.
INORGANIC CHEMISTRY
(2023)
Article
Geochemistry & Geophysics
Karina J. J. Lagos, Bojan A. A. Marinkovic, Anja Dosen, Alexis Debut, Karla Vizuete, Victor H. H. Guerrero, Emilio Pardo, Patricia I. I. Ponton
Summary: In this study, iron-rich titanate nanosheets were synthesized from Ecuadorian ilmenite sands through an alkaline hydrothermal treatment. The morphology of the nanosheets changed significantly after 72 hours of treatment at 180 degrees C. Analysis confirmed that the nanostructures were iron-rich layered titanates, but incomplete conversion of the precursor was observed.
Review
Engineering, Chemical
Mariia Pasichnyk, Petr Stanovsky, Petr Polezhaev, Boleslav Zach, Michal Syo, Marek Bobak, Johannes C. Jansen, Michal Pribyl, Jason E. Bara, Karel Friess, Jaromir Havlica, Douglas L. Gin, Richard D. Noble, Pavel Izak
Summary: The major gaseous pollutants emitted during the combustion of fossil fuels, energy-intensive production of materials, and waste processing are CO2, SO2, and NOx. The industry and research community are working together to intensify their capture and reduce their emissions in order to meet stricter emission limits. Membrane separation technology, which is energy-efficient and can be combined with other technologies, is a significant application for environmental protection. Different types of membranes with specific functions and unique systems are discussed as promising technologies for flue gas purification.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Review
Polymer Science
Mariolino Carta, Ariana R. Antonangelo, Johannes Carolus Jansen, Mariagiulia Longo
Summary: A growing number of high-performing gas separation membranes are being reported, but only a few have been commercialized, while the rest are still considered research outcomes. The development of mixed matrix membranes (MMMs) is a common approach to address the issue of rapidly changing performance. This review focuses on investigating and discussing the advantages and disadvantages of incorporating fillers with different morphologies into polymeric membranes, particularly examining the compatibility between inorganic and crystalline fillers and their organic and amorphous counterparts. It concludes with a brief summary of the main findings.
Article
Chemistry, Inorganic & Nuclear
Cristina Bilanin, Paula Escamilla, Jesus Ferrando-Soria, Antonio Leyva-Perez, Donatella Armentano, Emilio Pardo
Summary: Host-guest chemistry within metal-organic frameworks (MOFs) offers great potential for the selective synthesis of industrially relevant products and represents a powerful alternative to current heterogeneous catalysts.
DALTON TRANSACTIONS
(2023)