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The future of the precious metals is shiny and resistant. Although expensive and potentially replaceable by transition metal catalysts, precious metal implementation in research and industry shows potential. These metals catalyze oxidation and hydrogenation due to their dissociative behavior toward hydrogen and oxygen, dehydrogenation, isomerization, and aromatization, etc. The precious metal catalysts, especially platinum-based catalysts, are involved in a variety of industrial processes. Examples include Pt–Rh gauze for nitric acid production, the Pt/Al2O3 catalyst for cyclohexane and propylene production, and Pd/Al2O3 catalysts for petrochemical hydropurification reactions, etc. A quick search of the number of published articles in the last five years containing a combination of corresponding “metals” (Pt, Pd, Ru, Rh and Au) and “catalysts” as keywords indicates the importance of the Pt catalysts, but also the continuous increase in the contribution of Pd and Au. This Special Issue reveals the importance of precious metals in catalysis and focuses on mono- and bi-metallic formulations of any supported precious metals and their promotional catalytic effect of other transition metals. The application of precious metals in diverse reactions, either homogeneous or heterogeneous, and studies of the preparation, characterization, and applications of the supported precious metal catalysts, are presented.
sustainable ammonia synthesis --- Pt3Sn alloy --- alkenols --- n/a --- PtSn alloy --- propane dehydrogenation --- chelate --- photodegradation --- gold nanoparticles --- photochemical --- alkynols --- triple bond electron charge --- palladium catalyst --- Pt/Al2O3 --- 2-methyl-3-butyn-2-ol --- hydrogen storage --- X-ray crystallography --- ruthenium --- platinum dispersion --- gold catalysts --- reduction temperature --- DOC --- palladium --- renewable hydrogen --- 1-propanol --- 4-hydroxyproline --- glycerol --- 2-?-benzylproline --- proline --- hydrogen bonding --- oxidative coupling --- glucose oxidation --- stabilizing agent --- titania --- 4-fluoroproline --- turnover frequency --- porous carbons --- Pt–Sn/Al2O3 --- P25@Pd --- catalyst synthesis --- 2-propanol --- amino acid --- azetidine --- precious metals --- clay --- gas phase hydrogenation --- CNTs --- 3-butyn-2-ol --- Pd/Al2O3 --- heterogeneous enantioselective hydrogenation --- XPS --- microwave --- caesium --- perovskite --- CO oxidation --- Au–TiO2 --- dodecahydro-N-ethylcarbazole --- phenol photo-degradation --- pipecolinic acid --- 3-butyn-1-ol --- acetophenone --- drying --- palladium catalysts --- N-methylproline --- dehydrogenation --- PVA --- aging --- hydrodechlorination --- hydrogenolysis --- dispersion --- direct reduction --- core-shell --- Pt-Sn/Al2O3 --- Au-TiO2
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This book consists of 12 original research articles and one comprehensive review from invited chemists from around the world covering different fields of chemistry. The article on analytical chemistry features the analysis of highly polar metabolites in biological fluids, the determination of non-steroidal anti-inflammatory drugs with a gas chromatography coupled to ion trap mass spectrometry, and the synthesis of MoS2 nanostructures for the production of near-infrared photodetectors. The environmental chemistry articles include discussions on weekly and longitudinal elemental variability in hair samples, use of bottom ash as a stabilizing agent, the removal of phosphorus from the effluent of a paper company, and the chemistry and consequences of arsenic contamination of groundwater. Polymer/coating chemistry coverage includes the incorporation of superabsorbent polymers into cementitious-based composite materials, the use of licorice root extracts for edible coatings and postharvest quality improvement, and the use of mucin-grafted polyethylene glycol-based micro- for the oral delivery of insulin. The reported research on nanomaterials chemistry covers the synthesis of ZnO-doped ceria nanorods made up of CeO2/ZnO mixed oxides, and the production of carbon fiber-reinforced plastic bonded joints with novel carbon nanotube (CNT) adhesive films. A final paper on flavonol chemistry utilizes LC-MS/MS to investigate the stability of four common types of dietary flavonols.
Technology: general issues --- carbon nanotubes --- aging --- structural health monitoring --- water uptake --- adhesive film --- surfactant --- insulin --- mucin --- polyethylene glycol --- microparticles --- toxicology --- biomass production --- Chlorella vulgaris --- microalgae --- nutrients removal --- paper industry effluent --- effluent treatment --- non-steroidal anti-inflammatory drug (NSAID) --- urine --- doping analysis --- dispersive liquid–liquid microextraction (DLLME) --- gas chromatography mass spectrometry (GC-MS) --- sewage sludge disposal --- municipal solid waste --- co-combustion --- fly ash --- bottom ash --- heavy metal stabilization --- polar amino acids --- mixed cationic-RP column --- LC-HRMS --- BMAA --- TMAO --- flavonols --- H2O2 --- saliva --- metabolism --- oxidation --- LC-MS/MS --- CeO2/ZnO mixed oxides --- zinc oxide --- ceria nanorods --- oxygen storage capacity --- CO oxidation --- licorice --- chitosan --- edible coating --- strawberry shelf life --- rheological properties --- ultrasound-assisted extraction --- mechanical properties --- microstructure --- self-healing --- SAP --- microCT --- cementitious materials --- mortar --- hairs --- variability --- week --- longitudinal --- element --- metals --- INAA --- occupational exposure --- unexposed subject --- MoS2 --- microwave-assisted hydrothermal synthesis --- low-cost photosensors --- arsenic --- groundwater --- contamination --- water quality --- domestic filter systems --- health effects --- treatment methods --- Bangladesh --- n/a --- dispersive liquid-liquid microextraction (DLLME)
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This highly informative and carefully presented book covers the most recent advances as well as comprehensive reviews addressing novel and state-of-the-art topics from active researchers in innovative advanced materials and hybrid materials, concerning not only their synthesis, preparation, and characterization but especially focusing on the applications of such materials with outstanding performance.
Technology: general issues --- non-isothermal crystallisation kinetics --- multi-modal polymer --- graphene-based polymer nanocomposite --- carbon black fillers. --- n/a --- Li4Ti5O12 --- magnesium batteries --- cathodes --- MgCl2 --- garnet --- dual substitution --- spark plasma sintering --- conductivity --- activated carbon --- steam activation --- low-density polyethylene --- electric double layer capacitor --- solid fluoride electrolytes --- ceramics --- LaF3 --- fluorine-ion batteries --- metal current collectors --- electrochemical stability --- cyclic voltammetry --- copper-manganese alloy --- energy storage --- supercapacitor --- graphitic carbon nitride --- TiO2 nanotube --- MoS2 --- Al2O3 --- atomic layer deposition --- Li-ion microbatteries --- nano-catalyst --- noble metals --- TUD-1 --- mesoporous silica --- CO-oxidation --- air purification --- W2C --- WS2 --- hydrothermal --- nanoflowers --- lithium-ion batteries --- CdTe --- nanocrystal --- solar cells --- Spiro --- biomass carbon electrodes --- battery and supercapacitors --- structure–performance relationship --- Lithium-ion batteries --- LiMn2O4 nanoparticles --- Mg-doped --- kinetic and thermodynamic --- thermogravimetric analysis --- Pechini-type sol–gel process --- structure-performance relationship --- Pechini-type sol-gel process
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Catalysts are widely used in a great variety of technologies, providing remarkable efficiency in order to address sustainable energy production, climate change challenges, and to reduce industrial emissions. In the framework of the Environmental Catalysis section promoted by the Catalysts Editorial Office, this Special Issue, entitled “Environmental Friendly Catalysts for Energy and Pollution Control Applications”, comprises novel studies representing the state-of-the-art research for efficient energy generation and industrial emission control based on new environmentally friendly catalyst materials (EFCs). In particular, in this Special Issue (SI), different kinds of catalysts are presented for catalytic solutions, including the reduction of NOx emissions (new zeolite catalyst modified with Pt), the elimination of volatile organic compounds (Co3O4@SiO2 and acidic surface transformed natural zeolite) and the removal of SO2 emissions (through adsorption processes with sodium citrate). Moreover, novel biocatalysts for bioanodes and new functional nanostructured catalysts based on metal–organic framework (MOFs) for different applications are also included. Additionally, articles compiled in this SI are also focused on the improvement of catalytic processes. Thus, selected processes based on activated carbons (modified with titanium dioxide) and optimized Fenton processes for the removal of aqueous organic pollutants or for the inactivation of bacteria are also presented.
Technology: general issues --- Environmental science, engineering & technology --- photocatalysis --- organic wastewater --- preparation method --- degradation --- characterizations --- hybridization --- exoelectrogen --- biocatalyst --- microenvironment --- porous electrode --- anaerobic --- recalcitrant compounds --- E. coli K12 --- methylene blue --- optimization --- Pareto chart --- perturbation graph --- Pt-based promoter --- CO oxidation --- environmental catalysis --- refinery compliance --- fluid catalytic cracking --- FCC --- sodium citrate --- sodium humate --- SO2 --- absorption --- BaQD --- carbamazepine --- ferric coordination complex --- photo-Fenton --- turbidity --- cyanide --- activated carbon --- titanium dioxide --- composites --- continuous flow --- adsorption --- catalytic ozonation --- Lewis and Brønsted acid sites --- natural zeolite --- reaction mechanism --- toluene --- three-phase modelling --- fixed-bed reactor --- wastewater treatment --- phenol --- granular activated carbon --- Ad/Ox --- volatile organic compounds --- core–shell structures --- spherical polymer templates --- Co3O4 --- Pd-based promoter --- NOx emission --- metal–organic frameworks --- heterogeneous catalysis --- carbon dioxide --- biomass --- hydrogenation --- oxidation --- Fisher-Tropsch
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This book consists of 12 original research articles and one comprehensive review from invited chemists from around the world covering different fields of chemistry. The article on analytical chemistry features the analysis of highly polar metabolites in biological fluids, the determination of non-steroidal anti-inflammatory drugs with a gas chromatography coupled to ion trap mass spectrometry, and the synthesis of MoS2 nanostructures for the production of near-infrared photodetectors. The environmental chemistry articles include discussions on weekly and longitudinal elemental variability in hair samples, use of bottom ash as a stabilizing agent, the removal of phosphorus from the effluent of a paper company, and the chemistry and consequences of arsenic contamination of groundwater. Polymer/coating chemistry coverage includes the incorporation of superabsorbent polymers into cementitious-based composite materials, the use of licorice root extracts for edible coatings and postharvest quality improvement, and the use of mucin-grafted polyethylene glycol-based micro- for the oral delivery of insulin. The reported research on nanomaterials chemistry covers the synthesis of ZnO-doped ceria nanorods made up of CeO2/ZnO mixed oxides, and the production of carbon fiber-reinforced plastic bonded joints with novel carbon nanotube (CNT) adhesive films. A final paper on flavonol chemistry utilizes LC-MS/MS to investigate the stability of four common types of dietary flavonols.
carbon nanotubes --- aging --- structural health monitoring --- water uptake --- adhesive film --- surfactant --- insulin --- mucin --- polyethylene glycol --- microparticles --- toxicology --- biomass production --- Chlorella vulgaris --- microalgae --- nutrients removal --- paper industry effluent --- effluent treatment --- non-steroidal anti-inflammatory drug (NSAID) --- urine --- doping analysis --- dispersive liquid–liquid microextraction (DLLME) --- gas chromatography mass spectrometry (GC-MS) --- sewage sludge disposal --- municipal solid waste --- co-combustion --- fly ash --- bottom ash --- heavy metal stabilization --- polar amino acids --- mixed cationic-RP column --- LC-HRMS --- BMAA --- TMAO --- flavonols --- H2O2 --- saliva --- metabolism --- oxidation --- LC-MS/MS --- CeO2/ZnO mixed oxides --- zinc oxide --- ceria nanorods --- oxygen storage capacity --- CO oxidation --- licorice --- chitosan --- edible coating --- strawberry shelf life --- rheological properties --- ultrasound-assisted extraction --- mechanical properties --- microstructure --- self-healing --- SAP --- microCT --- cementitious materials --- mortar --- hairs --- variability --- week --- longitudinal --- element --- metals --- INAA --- occupational exposure --- unexposed subject --- MoS2 --- microwave-assisted hydrothermal synthesis --- low-cost photosensors --- arsenic --- groundwater --- contamination --- water quality --- domestic filter systems --- health effects --- treatment methods --- Bangladesh --- n/a --- dispersive liquid-liquid microextraction (DLLME)
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Catalysts are made of nanoparticles of metals, metal oxides, and other compounds that may act as active phases, support the latter, or a combination of both. The initial incentive to reduce as much as possible, up to the nano-scale, the size of the particles of active catalyst components is to maximize the surface area exposed to reactants, thus minimizing the specific cost per function and increasing the rate of conversion of feedstocks to products in relatively simple reactions. Nowadays, the interest in nanocatalyst developments has shifted to an emphasis on improving the selectivity of catalysts, allowing one to obtain desirable reactions in more complex synthetic processes. Thus, new generations of nanocatalysts should be designed at the molecular level to display well-defined structural characteristics, in terms of size, shapes, hierarchical porosity, and morphologies, as well as with controlled chemical composition. The development of efficient nanocatalysts supposes the characterization of their various surface active sites at the nanometer scale, which is focused on establishing synthesis–structure–performance relationships.
plasmonic photocatalyst --- metal nanoparticle --- N–TiO2 --- nanocomposites --- photocatalytic selective oxidation --- heterogeneous catalysis --- transition metal nitrides --- hydrogen production --- formic acid decomposition --- nickel catalyst --- calcium oxide promoter --- silica support --- Iron-based perovskites --- copper --- NO oxidation to NO2 --- NO2-assisted diesel soot oxidation --- soot oxidation under GDI exhaust conditions --- aqueous-phase reforming --- nickel --- ceria --- zirconia --- calcium --- yttrium --- methanol --- graphite --- reduced graphene oxide --- nitrogen-doped reduced graphene oxide --- exfoliation --- oxygen reduction reaction --- electrocatalysis --- UiO-66 --- iron --- cobalt --- nanocatalyst --- CO oxidation --- COProx --- methane --- oxidation catalysis --- formaldehyde --- magnetite iron oxide --- Fe3O4 --- palladium --- Pd --- silver --- Ag --- low-temperature activity --- nanocomposite --- Raman --- TG in air --- TG in hydrogen --- XRD --- electron microscopy --- EDS --- coordination polymers --- methane storage --- XRD crystallinity measurements --- mechanical shaping --- compaction --- VAM --- gas separation --- MOF pelletization --- catalysts --- dimerization --- isobutene --- olefins --- n/a
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This highly informative and carefully presented book covers the most recent advances as well as comprehensive reviews addressing novel and state-of-the-art topics from active researchers in innovative advanced materials and hybrid materials, concerning not only their synthesis, preparation, and characterization but especially focusing on the applications of such materials with outstanding performance.
non-isothermal crystallisation kinetics --- multi-modal polymer --- graphene-based polymer nanocomposite --- carbon black fillers. --- n/a --- Li4Ti5O12 --- magnesium batteries --- cathodes --- MgCl2 --- garnet --- dual substitution --- spark plasma sintering --- conductivity --- activated carbon --- steam activation --- low-density polyethylene --- electric double layer capacitor --- solid fluoride electrolytes --- ceramics --- LaF3 --- fluorine-ion batteries --- metal current collectors --- electrochemical stability --- cyclic voltammetry --- copper-manganese alloy --- energy storage --- supercapacitor --- graphitic carbon nitride --- TiO2 nanotube --- MoS2 --- Al2O3 --- atomic layer deposition --- Li-ion microbatteries --- nano-catalyst --- noble metals --- TUD-1 --- mesoporous silica --- CO-oxidation --- air purification --- W2C --- WS2 --- hydrothermal --- nanoflowers --- lithium-ion batteries --- CdTe --- nanocrystal --- solar cells --- Spiro --- biomass carbon electrodes --- battery and supercapacitors --- structure–performance relationship --- Lithium-ion batteries --- LiMn2O4 nanoparticles --- Mg-doped --- kinetic and thermodynamic --- thermogravimetric analysis --- Pechini-type sol–gel process --- structure-performance relationship --- Pechini-type sol-gel process
Choose an application
Catalysts are widely used in a great variety of technologies, providing remarkable efficiency in order to address sustainable energy production, climate change challenges, and to reduce industrial emissions. In the framework of the Environmental Catalysis section promoted by the Catalysts Editorial Office, this Special Issue, entitled “Environmental Friendly Catalysts for Energy and Pollution Control Applications”, comprises novel studies representing the state-of-the-art research for efficient energy generation and industrial emission control based on new environmentally friendly catalyst materials (EFCs). In particular, in this Special Issue (SI), different kinds of catalysts are presented for catalytic solutions, including the reduction of NOx emissions (new zeolite catalyst modified with Pt), the elimination of volatile organic compounds (Co3O4@SiO2 and acidic surface transformed natural zeolite) and the removal of SO2 emissions (through adsorption processes with sodium citrate). Moreover, novel biocatalysts for bioanodes and new functional nanostructured catalysts based on metal–organic framework (MOFs) for different applications are also included. Additionally, articles compiled in this SI are also focused on the improvement of catalytic processes. Thus, selected processes based on activated carbons (modified with titanium dioxide) and optimized Fenton processes for the removal of aqueous organic pollutants or for the inactivation of bacteria are also presented.
photocatalysis --- organic wastewater --- preparation method --- degradation --- characterizations --- hybridization --- exoelectrogen --- biocatalyst --- microenvironment --- porous electrode --- anaerobic --- recalcitrant compounds --- E. coli K12 --- methylene blue --- optimization --- Pareto chart --- perturbation graph --- Pt-based promoter --- CO oxidation --- environmental catalysis --- refinery compliance --- fluid catalytic cracking --- FCC --- sodium citrate --- sodium humate --- SO2 --- absorption --- BaQD --- carbamazepine --- ferric coordination complex --- photo-Fenton --- turbidity --- cyanide --- activated carbon --- titanium dioxide --- composites --- continuous flow --- adsorption --- catalytic ozonation --- Lewis and Brønsted acid sites --- natural zeolite --- reaction mechanism --- toluene --- three-phase modelling --- fixed-bed reactor --- wastewater treatment --- phenol --- granular activated carbon --- Ad/Ox --- volatile organic compounds --- core–shell structures --- spherical polymer templates --- Co3O4 --- Pd-based promoter --- NOx emission --- metal–organic frameworks --- heterogeneous catalysis --- carbon dioxide --- biomass --- hydrogenation --- oxidation --- Fisher-Tropsch
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The acceptance and preference of the sensory properties of foods are among the most important criteria determining food choice. Sensory perception and our response to food products, and finally food choice itself, are affected by a myriad of intrinsic and extrinsic factors. The pressing question is, how do these factors specifically affect our acceptance and preference for foods, both in and of themselves, and in combination in various contexts, both fundamental and applied? In addition, which factors overall play the largest role in how we perceive and behave towards food in daily life? Finally, how can these factors be utilized to affect our preferences and final acceptance of real food and food products from industrial production and beyond for healthier eating? A closer look at trends in research showcasing the influence that these factors and our senses have on our perception and affective response to food products and our food choices is timely. Thus, in this Special Issue collection “Consumer Preferences and Acceptance of Food Products”, we bring together articles which encompass the wide scope of multidisciplinary research in the space related to the determination of key factors involved linked to fundamental interactions, cross-modal effects in different contexts and eating scenarios, as well as studies that utilize unique study design approaches and methodologies.
perovskite-type oxide (PTO) --- cobalt --- gallium --- potassium --- higher alcohols --- syngas --- perovskites --- advanced oxidation processes (AOPs) --- Fenton-like --- peroxymonosulfate --- heterogeneous photocatalysis --- Fe-substitution --- operando X-ray absorption spectroscopy --- oxygen evolution reaction --- double perovskite catalysts --- oxy(hydroxide) --- heterogeneous catalysis --- surface science --- materials science --- CO oxidation --- DFT calculations --- transition metal doping --- nickel --- La0.3Sr0.55Ti0.95Ni0.05O3±δ --- catalyst regeneration --- structural reversibility --- H2S --- solid oxide fuel cell --- sol-gel method --- LaFeO3 --- visible light photocatalysis --- perovskite-type structure --- Mott-Schottky plot --- perovskite --- NO to NO2 oxidation --- NOx storage capacity --- LNT catalysts --- NO oxidation --- catalytic oxidation --- nitric oxide --- nitric acid --- ostwald’s process --- in situ --- LaCoO3 --- LaMnO3 --- LaNiO3 --- volatile organic compounds --- reactive grinding --- toluene --- n/a --- ostwald's process
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Catalysts are widely used in a great variety of technologies, providing remarkable efficiency in order to address sustainable energy production, climate change challenges, and to reduce industrial emissions. In the framework of the Environmental Catalysis section promoted by the Catalysts Editorial Office, this Special Issue, entitled “Environmental Friendly Catalysts for Energy and Pollution Control Applications”, comprises novel studies representing the state-of-the-art research for efficient energy generation and industrial emission control based on new environmentally friendly catalyst materials (EFCs). In particular, in this Special Issue (SI), different kinds of catalysts are presented for catalytic solutions, including the reduction of NOx emissions (new zeolite catalyst modified with Pt), the elimination of volatile organic compounds (Co3O4@SiO2 and acidic surface transformed natural zeolite) and the removal of SO2 emissions (through adsorption processes with sodium citrate). Moreover, novel biocatalysts for bioanodes and new functional nanostructured catalysts based on metal–organic framework (MOFs) for different applications are also included. Additionally, articles compiled in this SI are also focused on the improvement of catalytic processes. Thus, selected processes based on activated carbons (modified with titanium dioxide) and optimized Fenton processes for the removal of aqueous organic pollutants or for the inactivation of bacteria are also presented.
Technology: general issues --- Environmental science, engineering & technology --- photocatalysis --- organic wastewater --- preparation method --- degradation --- characterizations --- hybridization --- exoelectrogen --- biocatalyst --- microenvironment --- porous electrode --- anaerobic --- recalcitrant compounds --- E. coli K12 --- methylene blue --- optimization --- Pareto chart --- perturbation graph --- Pt-based promoter --- CO oxidation --- environmental catalysis --- refinery compliance --- fluid catalytic cracking --- FCC --- sodium citrate --- sodium humate --- SO2 --- absorption --- BaQD --- carbamazepine --- ferric coordination complex --- photo-Fenton --- turbidity --- cyanide --- activated carbon --- titanium dioxide --- composites --- continuous flow --- adsorption --- catalytic ozonation --- Lewis and Brønsted acid sites --- natural zeolite --- reaction mechanism --- toluene --- three-phase modelling --- fixed-bed reactor --- wastewater treatment --- phenol --- granular activated carbon --- Ad/Ox --- volatile organic compounds --- core–shell structures --- spherical polymer templates --- Co3O4 --- Pd-based promoter --- NOx emission --- metal–organic frameworks --- heterogeneous catalysis --- carbon dioxide --- biomass --- hydrogenation --- oxidation --- Fisher-Tropsch
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