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Princes --- Cường Để, --- Exile --- Vietnam --- History

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This Special Issue is related to studies of the hydrogen production from formic acid decomposition. It is based on five research papers and two reviews. The reviews discuss the liquid phase formic acid decomposition over bimetallic (PdAg), molecular (Ru, Ir, Fe, Co), and heterogenized molecular catalysts. The gas-phase reaction is studied over highly dispersed Pd, Pt, Au, Cu, and Ni supported catalysts. It is shown that the nature of the catalyst’s support plays an important role for the reaction. Thus, N-doping of the carbon support provides a significant promotional effect. One of the reasons for the high activity of the N-doped catalysts is the formation of single-atom active sites stabilized by pyridinic N species present in the support. It is demonstrated that carbon materials can be N-doped in different ways. It can be performed either directly from N-containing compounds during the carbon synthesis or by a post-synthetic deposition of N-containing compounds on the carbon support with known properties. The Issue could be useful for specialists in catalysis and nanomaterials as well as for graduate students studying chemistry and chemical engineering. The reported results can be applied for development of catalysts for the hydrogen production from different liquid organic hydrogen carriers.

Technology: general issues --- formic acid decomposition --- hydrogen production --- CuO-CeO2/γ-Al2O3 --- multifuel processor --- copper catalyst --- oxygenates --- fuel cell --- Pd/C --- melamine --- g-C3N4 --- bipyridine --- phenanthroline --- N-doped carbon --- hydrogen --- formic acid --- platinum --- nitrogen doped --- carbon nanotubes --- carbon nanofibers --- heterogeneous catalysts --- bimetallic nanoparticles --- PdAg --- AgPd --- alloy --- nickel catalyst --- porous carbon support --- nitrogen doping --- hydrogen energetics --- hydrogen carrier --- formic acid dehydrogenation --- supported gold catalysts --- formic --- formate --- hybrid --- functionalization --- co-catalyst --- additive --- amine --- molecular catalyst --- nanocatalyst --- nano co-catalyst --- formic acid decomposition --- hydrogen production --- CuO-CeO2/γ-Al2O3 --- multifuel processor --- copper catalyst --- oxygenates --- fuel cell --- Pd/C --- melamine --- g-C3N4 --- bipyridine --- phenanthroline --- N-doped carbon --- hydrogen --- formic acid --- platinum --- nitrogen doped --- carbon nanotubes --- carbon nanofibers --- heterogeneous catalysts --- bimetallic nanoparticles --- PdAg --- AgPd --- alloy --- nickel catalyst --- porous carbon support --- nitrogen doping --- hydrogen energetics --- hydrogen carrier --- formic acid dehydrogenation --- supported gold catalysts --- formic --- formate --- hybrid --- functionalization --- co-catalyst --- additive --- amine --- molecular catalyst --- nanocatalyst --- nano co-catalyst

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This Special Issue is related to studies of the hydrogen production from formic acid decomposition. It is based on five research papers and two reviews. The reviews discuss the liquid phase formic acid decomposition over bimetallic (PdAg), molecular (Ru, Ir, Fe, Co), and heterogenized molecular catalysts. The gas-phase reaction is studied over highly dispersed Pd, Pt, Au, Cu, and Ni supported catalysts. It is shown that the nature of the catalyst’s support plays an important role for the reaction. Thus, N-doping of the carbon support provides a significant promotional effect. One of the reasons for the high activity of the N-doped catalysts is the formation of single-atom active sites stabilized by pyridinic N species present in the support. It is demonstrated that carbon materials can be N-doped in different ways. It can be performed either directly from N-containing compounds during the carbon synthesis or by a post-synthetic deposition of N-containing compounds on the carbon support with known properties. The Issue could be useful for specialists in catalysis and nanomaterials as well as for graduate students studying chemistry and chemical engineering. The reported results can be applied for development of catalysts for the hydrogen production from different liquid organic hydrogen carriers.

formic acid decomposition --- hydrogen production --- CuO-CeO2/γ-Al2O3 --- multifuel processor --- copper catalyst --- oxygenates --- fuel cell --- Pd/C --- melamine --- g-C3N4 --- bipyridine --- phenanthroline --- N-doped carbon --- hydrogen --- formic acid --- platinum --- nitrogen doped --- carbon nanotubes --- carbon nanofibers --- heterogeneous catalysts --- bimetallic nanoparticles --- PdAg --- AgPd --- alloy --- nickel catalyst --- porous carbon support --- nitrogen doping --- hydrogen energetics --- hydrogen carrier --- formic acid dehydrogenation --- supported gold catalysts --- formic --- formate --- hybrid --- functionalization --- co-catalyst --- additive --- amine --- molecular catalyst --- nanocatalyst --- nano co-catalyst

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The formulation of coated composite materials is an important field of research around the world today. Coated composite materials include inhomogeneous and anisotropic materials. These materials are formulated by an amalgamate minimum of two or more materials that accommodate different properties. These materials have a vast field of appealing applications that encourage scientists to work on them. Due to their unique properties, such as their strength, liability, swiftness, and low cost, they are used as promising candidates for reliable applications in various fields, such as biomedical, engineering, energy devices, wastewater treatment, and agriculture. Different types of composite materials have had a noticeable impact in these fields already, such as glass, plastic, and, most promisingly, metal oxide nanoparticles.

6H-SiC --- Cu-Sn alloy --- ion implantation --- wettability --- interface --- nanoparticles --- dyes --- catalysis --- reduction --- glass/Kevlar --- hybrid composites --- hand layup --- epoxy --- hardener --- tensile --- hardness shore D --- water absorption --- density --- peel --- ratio --- Al2O3-Cr2O3 composite --- consolidation behavior --- microstructure --- mechanical properties --- thermal shock resistance --- ammonia electro-oxidation --- cyclic voltammetry --- electrochemical surface area (ECSA) --- electrocatalysts --- nanocomposites --- infrared detector --- resonant cavity --- energy applications --- absorptance --- Ce–Cu oxide --- co-precipitation --- photocatalyst --- dye degradation --- CuO/γ-Al2O3 --- ammonia electro-oxidation (AEO) --- nanocomposite structure --- XRD --- photoluminescence --- rare earth element REE --- heterogeneous catalysis --- perovskite --- CH3NH3PbI3 --- solar cells --- polysilane --- decaphenylcyclopentasilane --- stability --- chlorobenzene --- calculation --- Raman scattering --- lead-free --- NBT–BMN --- weight loss --- dielectric --- piezoelectric ceramics --- bimetallic nanoparticles --- kinetics --- antioxidant studies --- catalytic activity

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Hydrogen has been an important feedstock for various industries, and its global market is already valued at hundreds of billions of dollars per year. It is also playing additional roles as a clean alternative energy carrier for power generation and as a crucial feedstock in the bioeconomy. This Special Issue “Hydrogen Production Technologies” highlights different thermochemical, electrochemical, and biological technologies such as high- and low-temperature electrolyzers, microchannel reactors, sorption-enhanced reactors, multi-tubular solar reactors, and anaerobic digestors. It also covers other aspects ranging from reactor design, hydrogen storage, and process analysis of different alternatives.

History of engineering & technology --- algae --- anaerobic digestion --- biogas --- biohydrogen --- energy assessment --- kinetic models --- microwave --- nanoparticles --- pretreatment --- solar reactor --- hydrogen production --- solar receiver --- thermal energy --- computational fluid dynamics --- CFD --- model --- titanium nitride --- stainless steel --- alkaline electrolysis --- energy storage --- hydrogen energy --- solid-state hydrogen storage --- unitized regenerative fuel cell --- multi- walled carbon nanotube --- proton battery --- pyrolytic oil hydro-processing --- process modeling --- syngas --- gasification --- sorption-enhanced water-gas shift --- multi-functional material --- hydrogen production processes --- economic viability --- environmental efficiency --- sustainable energy --- multi-criteria analysis --- thermochemical cycles --- micro-channel reactor --- ceria --- ceria-zirconia --- water splitting --- oxygen carrier --- solid oxide electrolysis cells --- sintering additive --- CuO --- steam electrolysis --- compact reactor --- ethanol steam reforming --- water gas shift --- algae --- anaerobic digestion --- biogas --- biohydrogen --- energy assessment --- kinetic models --- microwave --- nanoparticles --- pretreatment --- solar reactor --- hydrogen production --- solar receiver --- thermal energy --- computational fluid dynamics --- CFD --- model --- titanium nitride --- stainless steel --- alkaline electrolysis --- energy storage --- hydrogen energy --- solid-state hydrogen storage --- unitized regenerative fuel cell --- multi- walled carbon nanotube --- proton battery --- pyrolytic oil hydro-processing --- process modeling --- syngas --- gasification --- sorption-enhanced water-gas shift --- multi-functional material --- hydrogen production processes --- economic viability --- environmental efficiency --- sustainable energy --- multi-criteria analysis --- thermochemical cycles --- micro-channel reactor --- ceria --- ceria-zirconia --- water splitting --- oxygen carrier --- solid oxide electrolysis cells --- sintering additive --- CuO --- steam electrolysis --- compact reactor --- ethanol steam reforming --- water gas shift