FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2007283545> ?p ?o ?g. }

• W2007283545 endingPage "266" @default.
• W2007283545 startingPage "255" @default.
• W2007283545 abstract "Dehydrogenation catalysts based on chromia supported on γ-alumina, containing about 6 wt.% of chromium and increasing amounts of potassium (up to 1.8 wt.%), were prepared and characterised by means of several techniques, such as N2 adsorption at 77 K, X-ray powder diffraction (XRPD), UV-Vis diffuse reflectance spectroscopy (DRS), electron paramagnetic resonance (EPR), temperature programmed reduction (TPR), microcalorimetry and chemical analyses. The catalytic behaviour of the samples was investigated in the propane dehydrogenation reaction at 813 K and the effect of potassium loading was examined. The addition of increasing amounts of the alkali metal, as expected, determined a general decrease in the surface acidity. The sites strength distribution was greatly influenced, due to the fact that, at loadings above 0.5 wt.%, potassium preferentially caused the disappearance of weak and medium acid sites. EPR showed a decrease of CrIII species (especially α-Cr2O3) on potassium increasing. TPR profiles of the K-containing samples showed the presence of two reduction peaks, ascribable to two different kinds of CrVI surface species with a different reduction behaviour. All catalysts showed a maximum of activity as a function of time-on-stream, due to reduction of CrVI to CrIII species in the first reaction period, and then a decrease, due to deactivation by coking. Propene selectivity was high in all cases and was positively affected by the presence of potassium in concentrations up to 1 wt.%." @default.
• W2007283545 created "2016-06-24" @default.
• W2007283545 creator A5001507425 @default.
• W2007283545 creator A5039442583 @default.
• W2007283545 creator A5047089569 @default.
• W2007283545 creator A5048937031 @default.
• W2007283545 creator A5074152933 @default.
• W2007283545 creator A5084404032 @default.
• W2007283545 date "2003-09-01" @default.
• W2007283545 modified "2023-10-12" @default.
• W2007283545 title "Effects of potassium addition on the acidity and reducibility of chromia/alumina dehydrogenation catalysts" @default.
• W2007283545 cites W1542816928 @default.
• W2007283545 cites W1961533274 @default.
• W2007283545 cites W1965425573 @default.
• W2007283545 cites W1969719368 @default.
• W2007283545 cites W1971483025 @default.
• W2007283545 cites W1972808953 @default.
• W2007283545 cites W1976264506 @default.
• W2007283545 cites W1984032289 @default.
• W2007283545 cites W1991645652 @default.
• W2007283545 cites W1994556685 @default.
• W2007283545 cites W2010717350 @default.
• W2007283545 cites W2011001894 @default.
• W2007283545 cites W2020028284 @default.
• W2007283545 cites W2020752260 @default.
• W2007283545 cites W2035286233 @default.
• W2007283545 cites W2036864839 @default.
• W2007283545 cites W2037361892 @default.
• W2007283545 cites W2043771767 @default.
• W2007283545 cites W2056544330 @default.
• W2007283545 cites W2060271096 @default.
• W2007283545 cites W2061760684 @default.
• W2007283545 cites W2061848625 @default.
• W2007283545 cites W2068379937 @default.
• W2007283545 cites W2071666423 @default.
• W2007283545 cites W2082938696 @default.
• W2007283545 cites W2083960219 @default.
• W2007283545 cites W2086230508 @default.
• W2007283545 cites W2089167882 @default.
• W2007283545 cites W2090933078 @default.
• W2007283545 cites W2095178966 @default.
• W2007283545 cites W2135011614 @default.
• W2007283545 cites W4250621806 @default.
• W2007283545 cites W2096794829 @default.
• W2007283545 doi "https://doi.org/10.1016/s0926-860x(03)00308-9" @default.
• W2007283545 hasPublicationYear "2003" @default.
• W2007283545 type Work @default.
• W2007283545 sameAs 2007283545 @default.
• W2007283545 citedByCount "71" @default.
• W2007283545 countsByYear W20072835452012 @default.
• W2007283545 countsByYear W20072835452013 @default.
• W2007283545 countsByYear W20072835452014 @default.
• W2007283545 countsByYear W20072835452015 @default.
• W2007283545 countsByYear W20072835452016 @default.
• W2007283545 countsByYear W20072835452017 @default.
• W2007283545 countsByYear W20072835452018 @default.
• W2007283545 countsByYear W20072835452019 @default.
• W2007283545 countsByYear W20072835452020 @default.
• W2007283545 countsByYear W20072835452021 @default.
• W2007283545 countsByYear W20072835452022 @default.
• W2007283545 countsByYear W20072835452023 @default.
• W2007283545 crossrefType "journal-article" @default.
• W2007283545 hasAuthorship W2007283545A5001507425 @default.
• W2007283545 hasAuthorship W2007283545A5039442583 @default.
• W2007283545 hasAuthorship W2007283545A5047089569 @default.
• W2007283545 hasAuthorship W2007283545A5048937031 @default.
• W2007283545 hasAuthorship W2007283545A5074152933 @default.
• W2007283545 hasAuthorship W2007283545A5084404032 @default.
• W2007283545 hasConcept C119889771 @default.
• W2007283545 hasConcept C121332964 @default.
• W2007283545 hasConcept C13965031 @default.
• W2007283545 hasConcept C150394285 @default.
• W2007283545 hasConcept C161790260 @default.
• W2007283545 hasConcept C178790620 @default.
• W2007283545 hasConcept C179104552 @default.
• W2007283545 hasConcept C185592680 @default.
• W2007283545 hasConcept C187961010 @default.
• W2007283545 hasConcept C2777954637 @default.
• W2007283545 hasConcept C2780532540 @default.
• W2007283545 hasConcept C46141821 @default.
• W2007283545 hasConcept C511782168 @default.
• W2007283545 hasConcept C517785266 @default.
• W2007283545 hasConceptScore W2007283545C119889771 @default.
• W2007283545 hasConceptScore W2007283545C121332964 @default.
• W2007283545 hasConceptScore W2007283545C13965031 @default.
• W2007283545 hasConceptScore W2007283545C150394285 @default.
• W2007283545 hasConceptScore W2007283545C161790260 @default.
• W2007283545 hasConceptScore W2007283545C178790620 @default.
• W2007283545 hasConceptScore W2007283545C179104552 @default.
• W2007283545 hasConceptScore W2007283545C185592680 @default.
• W2007283545 hasConceptScore W2007283545C187961010 @default.
• W2007283545 hasConceptScore W2007283545C2777954637 @default.
• W2007283545 hasConceptScore W2007283545C2780532540 @default.
• W2007283545 hasConceptScore W2007283545C46141821 @default.
• W2007283545 hasConceptScore W2007283545C511782168 @default.
• W2007283545 hasConceptScore W2007283545C517785266 @default.
• W2007283545 hasFunder F4320321873 @default.
• W2007283545 hasIssue "2" @default.

• next