0000000000790788

AUTHOR

Ralf Zapf

showing 3 related works from this author

Preferential CO oxidation over catalysts with well-defined inverse opal structure in microchannels

2008

Catalyst supports of CeO 2 /SiO 2 and Al 2 O 3 with three-dimensionally ordered macroporous structure were fabricated in microchannels by application of PMMA opals as templates. Pt-Rh supported on CeO 2 /SiO 2 showed high efficiency for CO removal in preferential CO oxidation in the presence of excess hydrogen. Pt-Rh supported on Al 2 O 3 with an inverse opal structure showed higher reactivity than that supported on wash-coated Al 2 O 3 layers in microchannel reactor.

Renewable Energy Sustainability and the EnvironmentCatalyst supportInorganic chemistryPt-Rh catalystEnergy Engineering and Power Technologychemistry.chemical_elementPreferential CO oxidationCondensed Matter PhysicsCatalysisRhodiumchemistry.chemical_compoundFuel TechnologychemistryChemical engineeringAluminium oxideInverse opalsReactivity (chemistry)SDG 7 - Affordable and Clean EnergyMicroreactorPlatinumSDG 7 – Betaalbare en schone energieCarbon monoxideInternational Journal of Hydrogen Energy
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Low temperature catalytic combustion of propane over Pt-based catalyst with inverse opal microstructure in microchannel reactor

2007

A novel Pt-based catalyst with highly regular, periodic inverse opal microstructure was fabricated in a microchannel reactor, and catalytic testing revealed excellent conversion and stable activity for propane combustion at low temperatures.

Materials scienceMetals and AlloysInverseMineralogyCatalytic combustionGeneral ChemistryPropane combustionMicrostructureCatalysisSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsCatalysischemistry.chemical_compoundChemical engineeringchemistryPropaneMaterials ChemistryCeramics and CompositesMicroreactorChemical Communications, ChemComm
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Blue light mediated C–H arylation of heteroarenes using TiO2as an immobilized photocatalyst in a continuous-flow microreactor

2017

Titanium dioxide was applied as an immobilized photocatalyst in a microstructured falling film reactor for the continuous-flow C-H arylation of heteroarenes with aryldiazonium salts as the starting material. Detailed investigations of the catalyst and a successful long-term run proved its excellent usability for this process. Very good yields up to 99% were achieved with broad substrate scope and were compared with batch synthesis. The transfer to the continuous-flow mode revealed an impressive boost in reactor performance solely resulting from the improved irradiation and contact of the catalyst, substrate and light.

Materials science010405 organic chemistryContinuous flowSubstrate (chemistry)microreactor010402 general chemistryPhotochemistry7. Clean energy01 natural sciencesPollution0104 chemical sciencesCatalysischemistry.chemical_compoundchemistryddc:540Titanium dioxidePhotocatalysiscontinuous flowEnvironmental ChemistryIrradiationMicroreactorphotocatalysisBlue lightGreen Chemistry
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