FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1972376793> ?p ?o ?g. }

• W1972376793 endingPage "233" @default.
• W1972376793 startingPage "224" @default.
• W1972376793 abstract "Upon reducing sulfated zirconia (SZ) catalysts with hydrogen, roughly 50% of the sulfate groups are reduced to sulfur dioxide which is detected mass spectrometrically; the other 50% are reduced to S=ions that are retained at the surface. The measured ratio H/S of consumed H atoms to S atoms originally present as SO4=ions is thus H/S=5. In the presence of platinum, either deposited on the SZ, or as Pt/NaY in a physical mixture with SZ, or downstream of SZ in a layered bed arrangement, the SO2is reduced further to H2S, which is detected chemically and by MS. In this case H/S=8. The TPR peak position is shifted to lower temperature in PtSZ and in physical mixtures of SZ and Pt/NaY. Reduction of sulfate groups lowers the Brønsted acidity of the catalysts, as indicated by theintensityof the IR bands of adsorbed ammonia. Brønsted acidity is almost totally eliminated by hydrogen reduction at 400°C. The position of the band of ammonia on Lewis sites is not significantly affected by sulfate reduction, but the temperature at which ammonia is desorbed from these sites is lowered. The H2S that is formed in the presence of Pt partially poisons the Pt particles; their catalytic signature in the isotope exchange of cyclopentane with D2indicates that large Pt ensembles are blocked by adsorbed S atoms even after reduction up to 350°C, but that isolated Pt atoms are still acting as active sites. After complete reduction of the SO4=groups, Pt in PtSZ loses its catalytic activity for the isotope exchange reaction." @default.
• W1972376793 created "2016-06-24" @default.
• W1972376793 creator A5008025239 @default.
• W1972376793 creator A5091640807 @default.
• W1972376793 date "1997-04-01" @default.
• W1972376793 modified "2023-09-27" @default.
• W1972376793 title "Reduction of SO4=Ions in Sulfated Zirconia Catalysts" @default.
• W1972376793 cites W1967979409 @default.
• W1972376793 cites W1976041773 @default.
• W1972376793 cites W1980106178 @default.
• W1972376793 cites W1982213484 @default.
• W1972376793 cites W1986057611 @default.
• W1972376793 cites W1987442599 @default.
• W1972376793 cites W1989005081 @default.
• W1972376793 cites W1990056557 @default.
• W1972376793 cites W1991889627 @default.
• W1972376793 cites W1999508744 @default.
• W1972376793 cites W2000849123 @default.
• W1972376793 cites W2003676961 @default.
• W1972376793 cites W2003965943 @default.
• W1972376793 cites W2007265670 @default.
• W1972376793 cites W2013707399 @default.
• W1972376793 cites W2013727253 @default.
• W1972376793 cites W2021983229 @default.
• W1972376793 cites W2025070732 @default.
• W1972376793 cites W2029001529 @default.
• W1972376793 cites W2031047197 @default.
• W1972376793 cites W2041603499 @default.
• W1972376793 cites W2046321888 @default.
• W1972376793 cites W2046437442 @default.
• W1972376793 cites W2046657821 @default.
• W1972376793 cites W2053369061 @default.
• W1972376793 cites W2055507984 @default.
• W1972376793 cites W2059032275 @default.
• W1972376793 cites W2062081363 @default.
• W1972376793 cites W2067412928 @default.
• W1972376793 cites W2070077577 @default.
• W1972376793 cites W2073162859 @default.
• W1972376793 cites W2088603551 @default.
• W1972376793 cites W2088991114 @default.
• W1972376793 cites W2093793440 @default.
• W1972376793 cites W2159299518 @default.
• W1972376793 cites W2165419477 @default.
• W1972376793 doi "https://doi.org/10.1006/jcat.1997.1553" @default.
• W1972376793 hasPublicationYear "1997" @default.
• W1972376793 type Work @default.
• W1972376793 sameAs 1972376793 @default.
• W1972376793 citedByCount "94" @default.
• W1972376793 countsByYear W19723767932012 @default.
• W1972376793 countsByYear W19723767932013 @default.
• W1972376793 countsByYear W19723767932016 @default.
• W1972376793 countsByYear W19723767932018 @default.
• W1972376793 countsByYear W19723767932019 @default.
• W1972376793 countsByYear W19723767932020 @default.
• W1972376793 countsByYear W19723767932021 @default.
• W1972376793 countsByYear W19723767932023 @default.
• W1972376793 crossrefType "journal-article" @default.
• W1972376793 hasAuthorship W1972376793A5008025239 @default.
• W1972376793 hasAuthorship W1972376793A5091640807 @default.
• W1972376793 hasConcept C145148216 @default.
• W1972376793 hasConcept C147789679 @default.
• W1972376793 hasConcept C150394285 @default.
• W1972376793 hasConcept C155138218 @default.
• W1972376793 hasConcept C15752686 @default.
• W1972376793 hasConcept C161790260 @default.
• W1972376793 hasConcept C178790620 @default.
• W1972376793 hasConcept C179104552 @default.
• W1972376793 hasConcept C185592680 @default.
• W1972376793 hasConcept C2776382133 @default.
• W1972376793 hasConcept C2777116465 @default.
• W1972376793 hasConcept C2778343803 @default.
• W1972376793 hasConcept C2778556512 @default.
• W1972376793 hasConcept C512968161 @default.
• W1972376793 hasConcept C518104683 @default.
• W1972376793 hasConcept C518881349 @default.
• W1972376793 hasConcept C55493867 @default.
• W1972376793 hasConcept C71240020 @default.
• W1972376793 hasConceptScore W1972376793C145148216 @default.
• W1972376793 hasConceptScore W1972376793C147789679 @default.
• W1972376793 hasConceptScore W1972376793C150394285 @default.
• W1972376793 hasConceptScore W1972376793C155138218 @default.
• W1972376793 hasConceptScore W1972376793C15752686 @default.
• W1972376793 hasConceptScore W1972376793C161790260 @default.
• W1972376793 hasConceptScore W1972376793C178790620 @default.
• W1972376793 hasConceptScore W1972376793C179104552 @default.
• W1972376793 hasConceptScore W1972376793C185592680 @default.
• W1972376793 hasConceptScore W1972376793C2776382133 @default.
• W1972376793 hasConceptScore W1972376793C2777116465 @default.
• W1972376793 hasConceptScore W1972376793C2778343803 @default.
• W1972376793 hasConceptScore W1972376793C2778556512 @default.
• W1972376793 hasConceptScore W1972376793C512968161 @default.
• W1972376793 hasConceptScore W1972376793C518104683 @default.
• W1972376793 hasConceptScore W1972376793C518881349 @default.
• W1972376793 hasConceptScore W1972376793C55493867 @default.
• W1972376793 hasConceptScore W1972376793C71240020 @default.
• W1972376793 hasIssue "1" @default.
• W1972376793 hasLocation W19723767931 @default.
• W1972376793 hasOpenAccess W1972376793 @default.

• next