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The general objective of this thesis was to explore the potential of in-situ H2O removal during fuel-related synthesis reactions with focus on in-situ H2O removal by hydrophilic membranes and by chemical reaction. It is demonstrated that in-situ H2O removal through vapour permeation during CO2 hydrogenation to Fischer-Tropsch hydrocarbons and during DME/DEE synthesis leads to increased conversion and yield levels, which are directly linked to the degree of H2O recovery.

Fischer-Tropsch synthesis --- H2O removal --- membrane reactor --- water gas shift reaction --- CO2 hydrogenation

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Currently, cobalt and related catalysts are very attractive as they provide many advantages, such as low cost and high activity, in a variety of applications. Cobalt catalysts are among the most active catalysts for Fischer–Tropsch synthesis and they promote the catalytic activity of the hydrodesulfurization catalysts. They also found other significant applications in environmental protection such as oxidation of volatile organic compounds, VOC, persulfate activator, ammonia synthesis, electrocatalysis and many more. Cobalt catalysts are active, stable and exhibit significant oxidation–reduction activity, as the Co can be found either as Co(II) or Co(III). Additionally, many molecules can interact with the cobalt supported phase by co-ordination due to partially filled d-orbital. Co-catalysts can be supported in almost all the inorganic supports such as alumina, titania, zeolites, etc. The cobalt oxide phase can be stabilized on the surface of the support due to variable interactions between the support and cobalt phase. These interactions are crucial for catalytic activity and can be regulated by proper selection of the preparation parameters such as the type of support, the Co loading, impregnation method and thermal conditions.This Special Issue aims to cover recent progress and advances in the field of cobalt and related catalysts.

electrocatalyst --- oxygen reduction reaction --- Al-air battery --- biomass --- nitrogen-doped carbon --- halloysite --- hierarchical materials --- p-xylene oxidation --- terephthalic acid --- cobalt catalyst --- titania --- diffuse reflectance spectroscopy --- sulfamethaxazole --- persulfates --- point of zero charge --- Co–ZSM-5 --- UV–Vis diffuse reflection spectroscopy --- FTIR spectroscopy --- pyridine adsorption --- CO adsorption --- Fischer–Tropsch synthesis --- bimetallic catalyst --- cobalt-nickel alloys --- TPR-XANES/EXAFS --- superstructures --- bicontinuous microemulsion --- oxygen evolution reaction --- metal–metal oxides --- n/a --- Co-ZSM-5 --- UV-Vis diffuse reflection spectroscopy --- Fischer-Tropsch synthesis --- metal-metal oxides

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Since the turn of the last century when the field of catalysis was born, iron and cobalt have been key players in numerous catalysis processes. These metals, due to their ability to activate CO and CH, haev a major economic impact worldwide. Several industrial processes and synthetic routes use these metals: biomass-to-liquids (BTL), coal-to-liquids (CTL), natural gas-to-liquids (GTL), water-gas-shift, alcohol synthesis, alcohol steam reforming, polymerization processes, cross-coupling reactions, and photocatalyst activated reactions. A vast number of materials are produced from these processes, including oil, lubricants, waxes, diesel and jet fuels, hydrogen (e.g., fuel cell applications), gasoline, rubbers, plastics, alcohols, pharmaceuticals, agrochemicals, feed-stock chemicals, and other alternative materials. However, given the true complexities of the variables involved in these processes, many key mechanistic issues are still not fully defined or understood. This Special Issue of Catalysis will be a collaborative effort to combine current catalysis research on these metals from experimental and theoretical perspectives on both heterogeneous and homogeneous catalysts. We welcome contributions from the catalysis community on catalyst characterization, kinetics, reaction mechanism, reactor development, theoretical modeling, and surface science.

Technology: general issues --- polynuclear cobalt complexes --- water oxidation --- artificial photosynthesis --- Fe/Cu catalytic-ceramic-filler --- nitrobenzene compounds wastewater --- pilot-scale test --- biodegradability-improvement --- Fischer–Tropsch synthesis (FTS) --- oxygenates --- iron --- cobalt --- ruthenium --- Anderson-Schulz-Flory (ASF) distribution --- Fischer–Tropsch --- catalyst deactivation --- potassium --- liquid-phase catalytic oxidation --- limonene --- carvone --- zeolitic imidazolate frameworks --- Fischer-Tropsch synthesis --- chain growth --- CO insertion --- kinetic isotope effect --- DFT --- hydrogenation of CO --- iron catalysts --- syngas --- monometallic iron catalysts --- Fischer–Tropsch product distribution --- reaction mechanism --- catalysis --- process synthesis and design --- energy conversion --- iron–cobalt bimetal catalysts --- electrochemical application --- hydrogen evolution --- oxygen evolution --- oxygen reduction --- RWGS --- iron oxides --- CO2 conversion --- gas-switching --- Synthetic natural gas (SNG) --- Cobalt --- Iron --- C2–C4 hydrocarbons --- paraffin ratio --- asymmetric hydrogenation --- homogeneous catalysis --- structural design --- conformational analysis --- NMR spectroscopy --- alumina --- strong metal support interactions --- CO2 hydrogenation --- pressure --- temperature --- cobalt carboxylate --- coating --- autoxidation --- alkyd --- siccative --- polymerization --- manganese --- Fischer–Tropsch synthesis --- modeling --- kinetics --- Co --- Al2O3 --- Pt --- Cd --- In --- Sn --- hydrocarbon selectivity --- synergic effect --- GTL --- additives --- reducibility --- XANES --- mesoporous silica based catalysts --- kinetic studies --- 3-D printed microchannel microreactor --- cobalt–nickel nanoparticles --- cobalt–nickel alloys --- nickel --- HAADF-STEM --- TPR-EXAFS/XANES --- CO hydrogenation --- CSTR --- n/a --- Fischer-Tropsch synthesis (FTS) --- Fischer-Tropsch --- Fischer-Tropsch product distribution --- iron-cobalt bimetal catalysts --- C2-C4 hydrocarbons --- cobalt-nickel nanoparticles --- cobalt-nickel alloys

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Since the turn of the last century when the field of catalysis was born, iron and cobalt have been key players in numerous catalysis processes. These metals, due to their ability to activate CO and CH, haev a major economic impact worldwide. Several industrial processes and synthetic routes use these metals: biomass-to-liquids (BTL), coal-to-liquids (CTL), natural gas-to-liquids (GTL), water-gas-shift, alcohol synthesis, alcohol steam reforming, polymerization processes, cross-coupling reactions, and photocatalyst activated reactions. A vast number of materials are produced from these processes, including oil, lubricants, waxes, diesel and jet fuels, hydrogen (e.g., fuel cell applications), gasoline, rubbers, plastics, alcohols, pharmaceuticals, agrochemicals, feed-stock chemicals, and other alternative materials. However, given the true complexities of the variables involved in these processes, many key mechanistic issues are still not fully defined or understood. This Special Issue of Catalysis will be a collaborative effort to combine current catalysis research on these metals from experimental and theoretical perspectives on both heterogeneous and homogeneous catalysts. We welcome contributions from the catalysis community on catalyst characterization, kinetics, reaction mechanism, reactor development, theoretical modeling, and surface science.

Technology: general issues --- polynuclear cobalt complexes --- water oxidation --- artificial photosynthesis --- Fe/Cu catalytic-ceramic-filler --- nitrobenzene compounds wastewater --- pilot-scale test --- biodegradability-improvement --- Fischer-Tropsch synthesis (FTS) --- oxygenates --- iron --- cobalt --- ruthenium --- Anderson-Schulz-Flory (ASF) distribution --- Fischer-Tropsch --- catalyst deactivation --- potassium --- liquid-phase catalytic oxidation --- limonene --- carvone --- zeolitic imidazolate frameworks --- Fischer-Tropsch synthesis --- chain growth --- CO insertion --- kinetic isotope effect --- DFT --- hydrogenation of CO --- iron catalysts --- syngas --- monometallic iron catalysts --- Fischer-Tropsch product distribution --- reaction mechanism --- catalysis --- process synthesis and design --- energy conversion --- iron-cobalt bimetal catalysts --- electrochemical application --- hydrogen evolution --- oxygen evolution --- oxygen reduction --- RWGS --- iron oxides --- CO2 conversion --- gas-switching --- Synthetic natural gas (SNG) --- Cobalt --- Iron --- C2-C4 hydrocarbons --- paraffin ratio --- asymmetric hydrogenation --- homogeneous catalysis --- structural design --- conformational analysis --- NMR spectroscopy --- alumina --- strong metal support interactions --- CO2 hydrogenation --- pressure --- temperature --- cobalt carboxylate --- coating --- autoxidation --- alkyd --- siccative --- polymerization --- manganese --- Fischer-Tropsch synthesis --- modeling --- kinetics --- Co --- Al2O3 --- Pt --- Cd --- In --- Sn --- hydrocarbon selectivity --- synergic effect --- GTL --- additives --- reducibility --- XANES --- mesoporous silica based catalysts --- kinetic studies --- 3-D printed microchannel microreactor --- cobalt-nickel nanoparticles --- cobalt-nickel alloys --- nickel --- HAADF-STEM --- TPR-EXAFS/XANES --- CO hydrogenation --- CSTR --- polynuclear cobalt complexes --- water oxidation --- artificial photosynthesis --- Fe/Cu catalytic-ceramic-filler --- nitrobenzene compounds wastewater --- pilot-scale test --- biodegradability-improvement --- Fischer-Tropsch synthesis (FTS) --- oxygenates --- iron --- cobalt --- ruthenium --- Anderson-Schulz-Flory (ASF) distribution --- Fischer-Tropsch --- catalyst deactivation --- potassium --- liquid-phase catalytic oxidation --- limonene --- carvone --- zeolitic imidazolate frameworks --- Fischer-Tropsch synthesis --- chain growth --- CO insertion --- kinetic isotope effect --- DFT --- hydrogenation of CO --- iron catalysts --- syngas --- monometallic iron catalysts --- Fischer-Tropsch product distribution --- reaction mechanism --- catalysis --- process synthesis and design --- energy conversion --- iron-cobalt bimetal catalysts --- electrochemical application --- hydrogen evolution --- oxygen evolution --- oxygen reduction --- RWGS --- iron oxides --- CO2 conversion --- gas-switching --- Synthetic natural gas (SNG) --- Cobalt --- Iron --- C2-C4 hydrocarbons --- paraffin ratio --- asymmetric hydrogenation --- homogeneous catalysis --- structural design --- conformational analysis --- NMR spectroscopy --- alumina --- strong metal support interactions --- CO2 hydrogenation --- pressure --- temperature --- cobalt carboxylate --- coating --- autoxidation --- alkyd --- siccative --- polymerization --- manganese --- Fischer-Tropsch synthesis --- modeling --- kinetics --- Co --- Al2O3 --- Pt --- Cd --- In --- Sn --- hydrocarbon selectivity --- synergic effect --- GTL --- additives --- reducibility --- XANES --- mesoporous silica based catalysts --- kinetic studies --- 3-D printed microchannel microreactor --- cobalt-nickel nanoparticles --- cobalt-nickel alloys --- nickel --- HAADF-STEM --- TPR-EXAFS/XANES --- CO hydrogenation --- CSTR

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The objective of this Special Issue is to provide new contributions in the area of biomass valorization using heterogeneous catalysts and focusing specifically on the structure/activity relationships of specific and important oxidation, hydrogenation, hydrodeoxygenation and biocatalytic processes. The issue emphasizes the influence of the design and morphology of the catalyst, in terms of particle size, redox and acid-base properties and catalyst stability. Finally, mechanistic studies and examples of design and optimization of industrial processes are presented.

furfural --- MPV reaction --- acid–base characterization --- methylbutynol test reaction --- Fischer–Tropsch synthesis --- Co/SBA–15 --- pore size --- pore length --- dry gel conversion --- MFI zeolite --- particle sizes --- silica sources --- hydrodeoxygenation --- biocatalysis --- bio-based platform chemicals --- furans --- reduction --- whole cells --- nickel phosphide --- cellobiose --- sorbitol --- MCM-41 --- hydrolytic hydrogenation --- zeolites --- catalysis --- solid acid --- solid base --- chemical modification --- alkylation --- glycosidation --- 2 methyl-furan --- catalyst design --- iron --- magnesium oxide --- catalytic hydrogen transfer reduction --- methanol --- diffusion --- ab initio --- industrial design --- H-ZSM-5 --- multiscale modeling --- adiabatic reactor --- zeolite catalysis --- hydrogenation --- palladium --- nanoparticles --- capping agent --- sol-immobilization --- furoic acid --- gold --- hydrotalcite --- oxidation --- bimetallic nanoparticles --- base-free --- green oxidation --- embedded catalysts --- biomass --- Eucalyptus globulus wood --- cross-flow autohydrolysis --- kinetic modeling --- hemicellulose-derived products --- gold catalysis --- selective oxidation --- colloidal synthesis --- 5-(hydroxymethyl)furfural --- 2,5-furandicarboxylic acid --- particle size --- biomass conversion --- in-situ synthesis --- Sn-Beta zeolite --- isomorphous substitution --- glucose --- HMF --- oxidative condensation --- furan-2-acrolein --- Pd-based catalysts --- n/a --- acid-base characterization --- Fischer-Tropsch synthesis --- Co/SBA-15