Search results for " 2-Propanol dehydration"

showing 3 items of 3 documents

Supported H3PW12O40 for 2-propanol (photo-assisted) catalytic dehydration in gas-solid regime: The role of the support and of the pseudo-liquid phase…

2016

Abstract Catalytic and photocatalytic 2-propanol dehydration was carried out by using a supported Keggin heteropolyacid H3PW12O40 (PW12). Binary materials were prepared by impregnation and/or solvothermal treatment by using commercial supports: SiO2 (Mallinckrodt), TiO2 (Evonik P25) and multiwall carbon nanotubes (Sunnano) or home solvothermically prepared SiO2 and TiO2. All the materials have been characterized by X-ray diffraction (XRD), scanning electron microscopy observations (SEM) coupled with EDX microanalysis, specific surface area measurements, diffuse reflectance spectroscopy (DRS), FTIR and Raman spectroscopy. (Photo)catalytic 2-propanol dehydration was studied in gas-solid regim…

Heteropolyacid 2-Propanol dehydration Photocatalysis Pseudo-liquid phase Keggin.business.operation010405 organic chemistryProcess Chemistry and TechnologyInorganic chemistryMallinckrodt010402 general chemistryPhotochemistry01 natural sciencesCatalysis0104 chemical sciencesCatalysisReaction ratePropenechemistry.chemical_compoundDehydration reactionchemistrySpecific surface areaPhotocatalysisDiisopropyl ether2-Propanol dehydration Heteropolyacid Keggin Photocatalysis Pseudo-liquid phaseSettore CHIM/07 - Fondamenti Chimici Delle TecnologiebusinessGeneral Environmental Science
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Heteropolyacids supported on boron nitride and carbon nitride for catalytic and catalytic photo-assisted alcohol dehydration

2021

Keggin H3PW12O40 (PW12) and Wells-Dawson H6P2W18O60 (P2W18) heteropolyacids (HPAs) are photo(catalysts) for various acid-promoted and redox catalytic reactions. Their activity increases if they are deposited on certain supports as metal oxides or carbon materials. Although the surface area and acid-base interactions of the HPAs with supports are considered as key factors for the performance of the binary material, the role of the local structure changes in the HPAs upon their immobilization on solids must be also of primary importance, directly affecting both acidity and photoredox properties. Here, the (photo)catalytic performance of Keggin and Wells-Dawson heteropolytungstates supported o…

Materials sciencePhoto assistedAlcohol02 engineering and technology010402 general chemistry01 natural sciencesCatalysisCatalysis2-Propanol dehydration Boron nitride Carbon nitride Heteropolyacid Keggin Photocatalysis Wells-Dawsonchemistry.chemical_compoundHeteropolyacid | KegginWells-Dawsonmedicine2-Propanol dehydrationDehydrationPhotocatalysisCarbon nitrideGeneral ChemistryCarbon nitrides021001 nanoscience & nanotechnologymedicine.disease0104 chemical sciencesBoron nitrideKeggin Wells-Dawson Heteropolyacid Boron nitride Carbon nitride 2-Propanol dehydration PhotocatalysischemistryBoron nitrideSettore CHIM/07 - Fondamenti Chimici Delle TecnologieMethanol0210 nano-technologyNuclear chemistryCatalysis Today
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Keggin and Wells-Dawson supported heteropolyacids as heterogeneous (photo)catalysts for gas-solid 2-propanol dehydration

2016

Catalytic and photocatalytic tests for 2-propanol dehydration to propene were successfully carried out by using binary materials obtained by supporting a Keggin or Wells-Dawson heteropolyacids via impregnation method to commercial SiO2 or TiO2. (Photo)catalytic 2-propanol dehydration was studied in gas-solid regime by using a continuous (photo)reactor working at atmospheric pressure and 80 °C. Propene and diisopropyl ether were the main reaction products. For the continuous photo-assisted runs the reactor was also illuminated with UV light. The heteropolyacid species played a key role both for the catalytic and the photo-assisted catalytic reactions; indicating that the acidity of the clust…

Settore CHIM/07 - Fondamenti Chimici Delle TecnologieHeteropolyacids photocatalysis catalysis 2-propanol dehydration
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