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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.

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 --- n/a --- sorption-enhanced water-gas shift

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

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 --- n/a --- sorption-enhanced water-gas shift

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The important advances achieved over the past years in all technological directions (industry, energy, and health) contributing to human well-being are unfortunately, in many cases, accompanied by a threat to the environment, with photochemical smog, stratospheric ozone depletion, acid rain, global warming, and finally climate change being the most well-known major issues. These are the results of a variety of pollutants emitted through these human activities. The indications show that we are already at a tipping point that might lead to non-linear and sudden environmental change on a global scale. Aiming to tackle these adverse effects in an attempt to mitigate any damage that has already occurred and to ensure that we are heading toward a cleaner (green) and sustainable future, scientists around the world are developing tools and techniques to understand, monitor, protect, and improve the environment. Emissions control catalysis is continuously advancing, providing novel, multifunctional, and optimally promoted using a variety of methods, nano-structured catalytic materials, and strategies (e.g., energy chemicals recycling, cyclic economy) that enable us to effectively control emissions, either of mobile or stationary sources, improving the quality of air (outdoor and indoor) and water and the energy economy. Representative cases include the abatement and/or recycling of CO2, CO, NOx, N2O, NH3, CH4, higher hydrocarbons, volatile organic compounds (VOCs), particulate matter, and specific industrial emissions (e.g., SOx, H2S, dioxins aromatics, and biogas). The “Emissions Control Catalysis” Special Issue has succeeded in collecting 22 high-quality contributions, included in this MDPI open access book, covering recent research progress in a variety of fields relevant to the above topics and/or applications, mainly on: (i) NOx catalytic reduction from cars (i.e., TWC) and industry (SCR) emissions; (ii) CO, CH4, and other hydrocarbons removal, and (iii) CO2 capture/recirculation combining emissions control with added-value chemicals production.

Research & information: general --- Environmental economics --- Pollution control --- LNT --- NSR --- NOx storage --- phosphorous --- deactivation --- poisoning --- electrochemical reduction --- CO2 --- CuO --- TiO2 --- ethanol --- cerium-doped titania --- sulfur-tolerant materials --- organic compounds purification --- diesel oxidation catalyst --- vehicle exhaust --- chemical looping reforming --- hydrogen --- oxygen carrier --- CeO2 --- nanorod --- selective catalytic reduction --- nitric oxide --- ammonia --- Cu/ZSM-5 --- cerium --- zirconium --- CO2 electroreduction --- CO2 valorization --- Cu catalyst --- particle size --- PEM --- acetaldehyde production --- methanol production --- Ce-based catalyst --- stepwise precipitation --- diesel exhaust --- nitrogen oxides abatement --- electrochemical promotion --- NEMCA --- palladium --- ionic promoter --- nanoparticles --- yttria-stabilized zirconia --- direct NO decomposition --- PGM oxide promotion --- PdO vs. PtO --- in-situ FT-IR --- NO adsorption properties --- redox properties --- sintered ore catalyst --- sulfate --- In-situ DRIFTS --- SCR --- copper-ceria catalysts --- hydrothermal method --- CO oxidation --- copper clusters --- nanoceria --- SOECs --- RWGS reaction kinetics --- Au-Mo-Fe-Ni/GDC electrodes --- high temperature H2O/CO2 co-electrolysis --- platinum --- Rhodium --- iridium --- NO --- N2O --- propene --- CO --- methane --- alkali --- alkaline earth --- platinum group metals --- deNOx chemistry --- lean burn conditions --- TWC --- catalyst promotion --- EPOC --- NH3-SCR --- nanostructure --- kinetics --- thermodynamics --- manganese oxides --- Co3O4 --- complete CH4 oxidation --- hydrothermal synthesis --- precipitation --- Pd/BEA --- Cold start --- Pd species --- NOx abatement --- ammonia oxidation --- response surface methodology --- desirability function --- Box-Behnken design --- carbon dioxide --- hydrogenation --- heterogeneous catalysis --- plasma catalysis --- value-added chemicals --- methanol synthesis --- methanation --- Catalyst --- (NH4)2SO4 --- deNOx --- H2O and SO2 poisoning --- low-temperature selective catalytic reduction --- de-NOx catalysis --- SO2/H2O tolerance --- transition metal-based catalysts --- perovskite --- catalytic coating --- cathodic sputtering method --- LNT --- NSR --- NOx storage --- phosphorous --- deactivation --- poisoning --- electrochemical reduction --- CO2 --- CuO --- TiO2 --- ethanol --- cerium-doped titania --- sulfur-tolerant materials --- organic compounds purification --- diesel oxidation catalyst --- vehicle exhaust --- chemical looping reforming --- hydrogen --- oxygen carrier --- CeO2 --- nanorod --- selective catalytic reduction --- nitric oxide --- ammonia --- Cu/ZSM-5 --- cerium --- zirconium --- CO2 electroreduction --- CO2 valorization --- Cu catalyst --- particle size --- PEM --- acetaldehyde production --- methanol production --- Ce-based catalyst --- stepwise precipitation --- diesel exhaust --- nitrogen oxides abatement --- electrochemical promotion --- NEMCA --- palladium --- ionic promoter --- nanoparticles --- yttria-stabilized zirconia --- direct NO decomposition --- PGM oxide promotion --- PdO vs. PtO --- in-situ FT-IR --- NO adsorption properties --- redox properties --- sintered ore catalyst --- sulfate --- In-situ DRIFTS --- SCR --- copper-ceria catalysts --- hydrothermal method --- CO oxidation --- copper clusters --- nanoceria --- SOECs --- RWGS reaction kinetics --- Au-Mo-Fe-Ni/GDC electrodes --- high temperature H2O/CO2 co-electrolysis --- platinum --- Rhodium --- iridium --- NO --- N2O --- propene --- CO --- methane --- alkali --- alkaline earth --- platinum group metals --- deNOx chemistry --- lean burn conditions --- TWC --- catalyst promotion --- EPOC --- NH3-SCR --- nanostructure --- kinetics --- thermodynamics --- manganese oxides --- Co3O4 --- complete CH4 oxidation --- hydrothermal synthesis --- precipitation --- Pd/BEA --- Cold start --- Pd species --- NOx abatement --- ammonia oxidation --- response surface methodology --- desirability function --- Box-Behnken design --- carbon dioxide --- hydrogenation --- heterogeneous catalysis --- plasma catalysis --- value-added chemicals --- methanol synthesis --- methanation --- Catalyst --- (NH4)2SO4 --- deNOx --- H2O and SO2 poisoning --- low-temperature selective catalytic reduction --- de-NOx catalysis --- SO2/H2O tolerance --- transition metal-based catalysts --- perovskite --- catalytic coating --- cathodic sputtering method