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Book
Catalysis for Global Development. Contributions around the Iberoamerican Federation of Catalysis
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Year: 2020 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

Adequate quality of life and well-being of modern societies is only achievable with sustainable manufacturing processes that efficiently use raw materials, eliminate waste, and avoid the use of hazardous materials. All this is hardly conceivable without catalysis. In a world concerned with the exploitation of natural resources, catalysis can offer direct synthesis routes that maximize resource efficiency. The Iberoamerican society is far too significant and far too involved in global development, owing to its natural richness of resources, not to have an essential role in current developments and future directions. Catalysis, in the Iberoamerican academic and industrial communities, is recognized as a relevant scientific discipline that supports several strategic industrial sectors through the manufacturing of products and materials, and the operationalization of processes to produce energy and other utilities. As a reflection of this, once every two years the Iberoamerican Congress on Catalysis takes place to share and discuss the state-of-the-art of this discipline with the Federation of Iberoamerican Catalysis Societies. This book collected sixteen outstanding contributions, stemming from this exceptional event—one which will undoubtedly mark a turning point and could be a source of inspiration to all those involved in catalysis, particularly the young generation of competent researchers taking their first steps in this incredibly complex and beautiful discipline.

Keywords

hydrodeoxygenation --- fast-pyrolysis bio-oil --- nickel catalyst --- upgrading --- peptide bond --- phthalonitriles --- phthalocyanines --- aminocarbonylation --- palladium catalysts --- castor oil --- biofuel --- selective transesterification --- ecodiesel --- biodiesel --- diesel engine --- electricity generator --- smoke opacity --- Bacharach opacity --- aldol condensation --- biomass valorization --- Mg/Al mixed oxides --- surfactant --- microwaves --- influence of water --- FAEEs --- mixed biocatalysts --- lipases --- microalgae --- silver nanoparticles --- zirconia --- hydrocarbons --- diesel soot --- catalytic combustion --- boronic esters --- borylation --- Suzuki–Miyaura --- layered double hydroxides --- copper --- palladium --- Fe/Nb2O5 immobilized catalyst --- emerging pollutants --- degradation --- hydrodesulfurization --- CoMo/Al2O3 --- basic additive --- lanthanum --- MCM-41 --- cerium --- benzyl alcohol --- oxidation --- benzaldehyde --- etherification --- glycerol --- tert-butyl alcohol --- dibutyl ether --- A-15 --- catalyst stability --- Cobalt ferrite --- ethylesters --- biofuels --- hydrotalcite --- transesterification --- fast pyrolysis --- SAPO-5 --- Al-MCM-41 --- dodecanoic acid --- photocatalysis --- Mg/Fe layered double hydroxides --- coprecipitation --- chlorophenols --- mixed oxides --- elimination --- phenol --- Al2O3-TiO2 --- CoMo --- CoMoS --- MoS2 --- desulfurization --- chemisorption --- MPI silica --- Ag nanoparticles --- XPS assessment --- n/a --- Suzuki-Miyaura


Book
Catalytic Applications of Clay Minerals and Hydrotalcites
Authors: ---
Year: 2022 Publisher: Basel MDPI - Multidisciplinary Digital Publishing Institute

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Clay minerals are inexpensive and available materials with a wide range of applications (adsorbent, ion exchanger, support, catalyst, paper coating, ceramic, and pharmaceutical applications, among others). Clay minerals can be easily modified through acid/basic treatments, the insertion of bulky ions or pillars into the interlayer spacing, and acid treatment, improving their physicochemical properties.Considering their low cost and high availability, clay minerals display a relatively high specific surface area in such a way that they have a great potential to be used as catalytic supports, since they can disperse expensive active phases as noble metals on the porous structures of their surfaces. In addition, the low cost of these supports allows their implementation on an industrial scale more easily than other supports, which are only feasible at the laboratory scale. Hydrotalcites (considered as anionic or basic clays) are also inexpensive materials with a great potential to be used as catalysts, since their textural properties could also be modified easily through the insertion of anions in their interlayer spacing. In the same way, these hydrotalcites, formed by layered double hydroxides, can lead to their respective mixed oxides after thermal treatment. These mixed oxides are considered basic catalysts with a high surface area, so they can also be used as catalytic support.


Book
Catalysis for Global Development. Contributions around the Iberoamerican Federation of Catalysis
Authors: ---
Year: 2020 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

Adequate quality of life and well-being of modern societies is only achievable with sustainable manufacturing processes that efficiently use raw materials, eliminate waste, and avoid the use of hazardous materials. All this is hardly conceivable without catalysis. In a world concerned with the exploitation of natural resources, catalysis can offer direct synthesis routes that maximize resource efficiency. The Iberoamerican society is far too significant and far too involved in global development, owing to its natural richness of resources, not to have an essential role in current developments and future directions. Catalysis, in the Iberoamerican academic and industrial communities, is recognized as a relevant scientific discipline that supports several strategic industrial sectors through the manufacturing of products and materials, and the operationalization of processes to produce energy and other utilities. As a reflection of this, once every two years the Iberoamerican Congress on Catalysis takes place to share and discuss the state-of-the-art of this discipline with the Federation of Iberoamerican Catalysis Societies. This book collected sixteen outstanding contributions, stemming from this exceptional event—one which will undoubtedly mark a turning point and could be a source of inspiration to all those involved in catalysis, particularly the young generation of competent researchers taking their first steps in this incredibly complex and beautiful discipline.

Keywords

History of engineering & technology --- hydrodeoxygenation --- fast-pyrolysis bio-oil --- nickel catalyst --- upgrading --- peptide bond --- phthalonitriles --- phthalocyanines --- aminocarbonylation --- palladium catalysts --- castor oil --- biofuel --- selective transesterification --- ecodiesel --- biodiesel --- diesel engine --- electricity generator --- smoke opacity --- Bacharach opacity --- aldol condensation --- biomass valorization --- Mg/Al mixed oxides --- surfactant --- microwaves --- influence of water --- FAEEs --- mixed biocatalysts --- lipases --- microalgae --- silver nanoparticles --- zirconia --- hydrocarbons --- diesel soot --- catalytic combustion --- boronic esters --- borylation --- Suzuki-Miyaura --- layered double hydroxides --- copper --- palladium --- Fe/Nb2O5 immobilized catalyst --- emerging pollutants --- degradation --- hydrodesulfurization --- CoMo/Al2O3 --- basic additive --- lanthanum --- MCM-41 --- cerium --- benzyl alcohol --- oxidation --- benzaldehyde --- etherification --- glycerol --- tert-butyl alcohol --- dibutyl ether --- A-15 --- catalyst stability --- Cobalt ferrite --- ethylesters --- biofuels --- hydrotalcite --- transesterification --- fast pyrolysis --- SAPO-5 --- Al-MCM-41 --- dodecanoic acid --- photocatalysis --- Mg/Fe layered double hydroxides --- coprecipitation --- chlorophenols --- mixed oxides --- elimination --- phenol --- Al2O3-TiO2 --- CoMo --- CoMoS --- MoS2 --- desulfurization --- chemisorption --- MPI silica --- Ag nanoparticles --- XPS assessment --- hydrodeoxygenation --- fast-pyrolysis bio-oil --- nickel catalyst --- upgrading --- peptide bond --- phthalonitriles --- phthalocyanines --- aminocarbonylation --- palladium catalysts --- castor oil --- biofuel --- selective transesterification --- ecodiesel --- biodiesel --- diesel engine --- electricity generator --- smoke opacity --- Bacharach opacity --- aldol condensation --- biomass valorization --- Mg/Al mixed oxides --- surfactant --- microwaves --- influence of water --- FAEEs --- mixed biocatalysts --- lipases --- microalgae --- silver nanoparticles --- zirconia --- hydrocarbons --- diesel soot --- catalytic combustion --- boronic esters --- borylation --- Suzuki-Miyaura --- layered double hydroxides --- copper --- palladium --- Fe/Nb2O5 immobilized catalyst --- emerging pollutants --- degradation --- hydrodesulfurization --- CoMo/Al2O3 --- basic additive --- lanthanum --- MCM-41 --- cerium --- benzyl alcohol --- oxidation --- benzaldehyde --- etherification --- glycerol --- tert-butyl alcohol --- dibutyl ether --- A-15 --- catalyst stability --- Cobalt ferrite --- ethylesters --- biofuels --- hydrotalcite --- transesterification --- fast pyrolysis --- SAPO-5 --- Al-MCM-41 --- dodecanoic acid --- photocatalysis --- Mg/Fe layered double hydroxides --- coprecipitation --- chlorophenols --- mixed oxides --- elimination --- phenol --- Al2O3-TiO2 --- CoMo --- CoMoS --- MoS2 --- desulfurization --- chemisorption --- MPI silica --- Ag nanoparticles --- XPS assessment


Book
Supported Layered Double Hydroxides as CO2 Adsorbents for Sorption-enhanced H2 Production
Author:
ISBN: 3319412752 3319412760 Year: 2016 Publisher: Cham : Springer International Publishing : Imprint: Springer,

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This thesis presents a combination of material synthesis and characterization with process modeling. In it, the CO2 adsorption properties of hydrotalcites are enhanced through the production of novel supported hybrids (carbon nanotubes and graphene oxide) and the promotion with alkali metals. Hydrogen is regarded as a sustainable energy carrier, since the end users produce no carbon emissions. However, given that most of the hydrogen produced worldwide comes from fossil fuels, its potential as a carbon-free alternative depends on the ability to capture the carbon dioxide released during manufacture. Sorption-enhanced hydrogen production, in which CO2 is removed as it is formed, can make a major contribution to achieving this. The challenge is to find solid adsorbents with sufficient CO2 capacity that can work in the right temperature window over repeated adsorption-desorption cycles. The book presents a highly detailed characterization of the materials, together with an accurate measurement of their adsorption properties under dry conditions and in the presence of steam. It demonstrates that even small quantities of graphene oxide provide superior thermal stability to hydrotalcites due to their compatible layered structure, making them well suited as volume-efficient adsorbents for CO2. Lastly, it identifies suitable catalysts for the overall sorption-enhanced water gas shift process.


Book
Layered Double Hydroxides
Authors: ---
Year: 2021 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Very few materials have attracted so much attention in recent years, both from researchers and industry, as layered double hydroxides (LDHs) have. LDHs, which are also referred to as anionic clays or hydrotalcites, are a wide class of inorganic ionic lamellar clay materials consisting of alternately stacked positively charged metal hydroxide layers with intercalated charge-balancing anions in hydrated interlayer regions. Their unique properties, such as their extremely high versatility in chemical composition and intercalation ability, extraordinary tuneability in composition as well as morphology, good biocompatibility and high anion exchangeability, have triggered immense interdisciplinary interest for their use in many different fields of chemistry, biology, medicine, and physics. Indeed, the applications of LDHs are constantly growing: LDHs, in the form of aggregated lamellar clusters, exfoliated single-layer nanosheets, or hierarchical films of interconnected nanoplatelets, can be effectively used as nanoscale vehicles in drug delivery, heterogeneous catalysts and supports for molecular catalysts, ion exchangers and adsorbents, solid electrolytes or fillers in electrochemistry, for the fabrication of superhydrophobic surfaces, water treatment and purification, and the synthesis of functional thin films. This book gathers the contributions to the Special Issue “Layered Double Hydroxides” of Crystals, which includes two review articles and seven research papers.


Book
Layered Double Hydroxides
Authors: ---
Year: 2021 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

Very few materials have attracted so much attention in recent years, both from researchers and industry, as layered double hydroxides (LDHs) have. LDHs, which are also referred to as anionic clays or hydrotalcites, are a wide class of inorganic ionic lamellar clay materials consisting of alternately stacked positively charged metal hydroxide layers with intercalated charge-balancing anions in hydrated interlayer regions. Their unique properties, such as their extremely high versatility in chemical composition and intercalation ability, extraordinary tuneability in composition as well as morphology, good biocompatibility and high anion exchangeability, have triggered immense interdisciplinary interest for their use in many different fields of chemistry, biology, medicine, and physics. Indeed, the applications of LDHs are constantly growing: LDHs, in the form of aggregated lamellar clusters, exfoliated single-layer nanosheets, or hierarchical films of interconnected nanoplatelets, can be effectively used as nanoscale vehicles in drug delivery, heterogeneous catalysts and supports for molecular catalysts, ion exchangers and adsorbents, solid electrolytes or fillers in electrochemistry, for the fabrication of superhydrophobic surfaces, water treatment and purification, and the synthesis of functional thin films. This book gathers the contributions to the Special Issue “Layered Double Hydroxides” of Crystals, which includes two review articles and seven research papers.


Book
Layered Double Hydroxides
Authors: ---
Year: 2021 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

Very few materials have attracted so much attention in recent years, both from researchers and industry, as layered double hydroxides (LDHs) have. LDHs, which are also referred to as anionic clays or hydrotalcites, are a wide class of inorganic ionic lamellar clay materials consisting of alternately stacked positively charged metal hydroxide layers with intercalated charge-balancing anions in hydrated interlayer regions. Their unique properties, such as their extremely high versatility in chemical composition and intercalation ability, extraordinary tuneability in composition as well as morphology, good biocompatibility and high anion exchangeability, have triggered immense interdisciplinary interest for their use in many different fields of chemistry, biology, medicine, and physics. Indeed, the applications of LDHs are constantly growing: LDHs, in the form of aggregated lamellar clusters, exfoliated single-layer nanosheets, or hierarchical films of interconnected nanoplatelets, can be effectively used as nanoscale vehicles in drug delivery, heterogeneous catalysts and supports for molecular catalysts, ion exchangers and adsorbents, solid electrolytes or fillers in electrochemistry, for the fabrication of superhydrophobic surfaces, water treatment and purification, and the synthesis of functional thin films. This book gathers the contributions to the Special Issue “Layered Double Hydroxides” of Crystals, which includes two review articles and seven research papers.

Keywords

Research & information: general --- layered double hydroxide --- memory effect --- rare earth --- europium --- 1,3,5-benzenetricarboxylic acid --- alginate beads --- green sorbent --- selective adsorption --- heavy metals --- tetracycline --- metal hydroxides --- layered double hydroxides --- removal --- water sample --- Bacillus subtilis --- surfactin --- quantitative analysis --- fermentation --- growth phase --- cellular biology --- catalysis --- DNA --- drug delivery --- hydrotalcite --- osteogenesis --- photocatalysis --- RNA. --- antimonate uptake --- mine water --- brandholzite --- zincalstibite --- iron precursor --- acidic residual solution --- LDH synthesis --- Mo(VI) adsorption --- resveratrol --- solid lipid nanoparticles --- endurance exercise --- mitochondrial nutrients --- mitochondrial quality control --- origin of life --- layer double hydroxide --- synthetic biology --- bioinspired devices --- biosensors --- bioanalysis --- layered double hydroxide --- memory effect --- rare earth --- europium --- 1,3,5-benzenetricarboxylic acid --- alginate beads --- green sorbent --- selective adsorption --- heavy metals --- tetracycline --- metal hydroxides --- layered double hydroxides --- removal --- water sample --- Bacillus subtilis --- surfactin --- quantitative analysis --- fermentation --- growth phase --- cellular biology --- catalysis --- DNA --- drug delivery --- hydrotalcite --- osteogenesis --- photocatalysis --- RNA. --- antimonate uptake --- mine water --- brandholzite --- zincalstibite --- iron precursor --- acidic residual solution --- LDH synthesis --- Mo(VI) adsorption --- resveratrol --- solid lipid nanoparticles --- endurance exercise --- mitochondrial nutrients --- mitochondrial quality control --- origin of life --- layer double hydroxide --- synthetic biology --- bioinspired devices --- biosensors --- bioanalysis


Book
Materials for Nuclear Waste Immobilization
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ISBN: 3039218476 3039218468 Year: 2020 Publisher: MDPI - Multidisciplinary Digital Publishing Institute

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The book outlines recent advances in nuclear wasteform materials including glasses, ceramics and cements and spent nuclear fuel. It focuses on durability aspects and contains data on performance of nuclear wasteforms as well as expected behavior in a disposal environment.


Book
Processing-Structure-Properties Relationships in Polymers
Author:
ISBN: 3039218816 3039218808 Year: 2019 Publisher: MDPI - Multidisciplinary Digital Publishing Institute

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This collection of research and review papers is aimed at depicting the state of the art on the possible correlations between processing variables, obtained structure and special properties which this structure induces on the plastic part. The extraordinary capacity of plastics to modify their properties according to a particular structure is evidenced for several transformation processes and for many applications. The final common goal is to take profit of this peculiar capacity of plastics by inducing, through a suitable processing, a specific spatial organization.

Keywords

polymer blend --- carbon nanotube --- polycaprolactone --- X-ray diffraction --- reactive blending --- copper clad laminate --- incremental forming --- uniaxial compression --- fatigue --- nanoparticles --- composite --- deformation --- polymer composite --- humidity --- model --- uniaxial tensile deformation --- injection molding --- SPIF --- bioresorbable polymers --- flow --- poly(ethylene terephthalate) --- morphology --- 3D printing/additive manufacturing --- supercritical CO2 --- polymer morphology --- tissue engineering and regenerative medicine --- microfibrillar composites --- polyamide 6 --- ultra-high molecular weight polyethylene --- chain orientation --- processing --- intrinsic viscosity --- conductive polymer composites --- microcellular injection molding --- ionic liquids --- poly(?-caprolactone) --- biaxial elongation --- biobased films --- crystalline morphology --- gel --- composites --- PLLA --- bioresorbable vascular scaffolds --- temperature --- layered double hydroxides --- epoxy microstructure --- nanoreinforcement --- shear --- collagen --- controllable gas permeability --- contact angle --- WAXS --- mechanical performance --- biodegradable nanofibers --- in situ X-ray --- foam --- polyolefin --- carbon black --- polymorphism --- degradation --- polypropylene --- XRD --- graphite --- polyimide film --- indentation --- ultra-high molecular weight polyethylene (UHMWPE) --- mold temperature evolution --- fused filament fabrication/fused deposition modelling --- polyvinyl butyral --- supercritical fluid --- conductive filler --- octakis[(3-glycidoxypropyl)dimethylsiloxy]octasilsesquioxane (GPOSS) --- supercritical N2 --- compression molding --- flame retardant --- epinephrine --- crystallinity --- ethylene vinyl acetate --- atomic force microscopy --- temperature sensitive --- mechanical properties --- crystallisation --- microencapsulation --- linear coefficient of thermal expansion (CTE) --- structure and properties --- PLA --- isotactic polypropylene --- lidocaine --- graphene --- structural analysis --- critical gel --- Harmonix AFM --- physicochemical characterization --- polyurethane --- cavitation --- curing rate --- orientation --- breathable film --- stress-induced phase transitions --- phase transitions --- SAXS --- hydrophobicity --- melamine polyphosphate --- PLGA --- compatibilizer --- polyoxymethylene (POM) --- homogeneous dispersion --- stretch blow molding --- electrical conductivity --- poly(lactic acid)


Book
Polymeric Systems as Antimicrobial or Antifouling Agents
Authors: ---
ISBN: 3039284576 3039284568 Year: 2020 Publisher: MDPI - Multidisciplinary Digital Publishing Institute

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The rapid increase in the emergence of antibiotic-resistant bacterial strains, combined with a dwindling rate of discovery of novel antibiotic molecules, has created an alarming issue worldwide. Although the occurrence of resistance in microbes is a natural process, the overuse of antibiotics is known to increase the rate of resistance evolution. Under antibiotic treatment, susceptible bacteria inevitably die, while resistant microorganisms proliferate under reduced competition. Therefore, the out-of-control use of antibiotics eliminates drug-susceptible species that would naturally limit the expansion of resistant species. In addition, the ability of many microbial species to grow as a biofilm has further complicated the treatment of infections with conventional antibiotics. A number of corrective measures are currently being explored to reverse or slow antibiotic resistance evolution, Among which one of the most promising solutions is the development of polymer-based antimicrobial compounds. In this Special Issue, different polymer systems able to prevent or treat biofilm formation, including cationic polymers, antibacterial peptide-mimetic polymers, polymers or composites able to load and release bioactive molecules, and antifouling polymers able to repel microbes by physical or chemical mechanisms are reported. Their applications in the design and fabrication of medical devices, in food packaging, and as drug carriers is investigated.

Keywords

imidization --- antifouling materials --- n/a --- UV-induced polymerization --- 2-hydroxyethyl methacrylate --- additive manufacturing --- antimicrobial resistance --- biofilm --- antibacterial peptides --- ocular infections --- food shelf-life --- hemolytic activity --- polyamide 11 --- coatings from nanoparticles --- polymeric surfaces --- microbial biofilm --- ?-chymotrypsin --- antimicrobial properties --- linear low-density polyethylene --- drug delivery systems --- ESKAPE pathogens --- halictine --- composites --- foodborne pathogens --- layered double hydroxides --- cuprous oxide nanoparticles --- multifunctional hybrid systems --- microbicidal coatings --- adhesives --- acrylates --- quaternization --- polymeric biocide --- biocompatible polymer --- surface functionalization --- sol-gel preparation --- antifouling --- antimicrobial peptides --- polymerizable quaternary ammonium salts --- antibiofilm activity --- polymeric films --- antibacterial activity --- bionanocomposites --- cationic polymers --- Escherichia coli --- antibacterial --- biofilm methods --- drug delivery --- circular dichroism --- coatings wettability --- antimicrobial polymers --- fluorescence --- Staphylococcus aureus --- biofilm analysis --- polyethylene glycol --- copolymerization --- dynamic light scattering --- physiological salt --- copper paint --- medical device-related infections --- olive mill wastewater --- Acinetobacter baumannii --- anti-biofilm surface --- additives --- periodontitis --- periodontal biofilms --- antimicrobial peptide --- segmented polyurethanes --- plastic materials --- biocompatible systems --- bactericidal coatings --- bacteria viability --- wound dressings --- ordered mesoporous silica --- quaternary ammonium --- multidrug-resistant --- antimicrobial polymer --- biofilm devices --- biofilm on contact lenses --- water disinfection --- amorphous materials --- polymers --- infrared spectroscopy --- quaternary ammonium salts --- lipopeptides --- antibacterial properties --- thermal stability --- proteinase --- active packaging --- antibacterial polymers --- anti-biofilm surfaces --- 3D printing --- drug carrier --- persister cells

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