Matches in SemOpenAlex for { <https://semopenalex.org/work/W2109595711> ?p ?o ?g. }
Showing items 1 to 74 of
74
with 100 items per page.
- W2109595711 endingPage "1795" @default.
- W2109595711 startingPage "1795" @default.
- W2109595711 abstract "Paramagnetic metal and oxygen species observed when alumina-(or zirconia-supported rhodium, Rh/γ-Al2O3(ZrO2), is obtained by the decarbonylation of [Rh4(CO)12]-Al2O3(ZrO2) are discussed as a function of the decarbonylation temperature (250–600 °C) and the method of decarbonylation (pyrolysis in vacuo or reduction in an H2 stream). On vacuum-pyrolysed samples, RhP(T)/γ-Al2O3, RhII formal centres are stable only after decarbonylation at 250 °C; contact with O2 produces [RhIIIn–O2]˙–(n= 1,2) and Al3+—O2–, with an increasing amount of Al3+—O–2 as the decarbonylation temperature increases. RhP(T)/ZrO2 does not show paramagnetic species before contact with O2: the treatment with O2 stabilizes both [Rh2III—O2]˙– and Zr4+—O–2 centres at a decarbonylation temperature of 250 °C, while essentially Zr4+—O2– alone is formed at higher temperature. On H2 reduced samples, RhH(T)/γ-Al2O3, formal RhO centres formed in the decarbonylation temperature range 250–500 °C, while no paramagnetic species were observed on RhH(T)/ZrO2. Contact with O2 shows behaviour of RhH(T)/γ-Al2O3(ZrO2) very similar to that of RhP(T)/γ-Al2O3(ZrO2). The stability of the Rh—O2 bond is a function of the metal positive charge and it is related to the decarbonylation temperature. The strength of the interaction between O2– and the support acidic centres, Al3+ and Zr4+, is always high in γ-Al2O3-supported samples, and dramatically increases in ZrO2-supported samples on increasing the decarbonylation temperature. Different pathways of electron transfer can explain the observed behaviour of Rh/ZrO2." @default.
- W2109595711 created "2016-06-24" @default.
- W2109595711 creator A5019125890 @default.
- W2109595711 creator A5019157317 @default.
- W2109595711 creator A5025346621 @default.
- W2109595711 creator A5040749610 @default.
- W2109595711 creator A5060072875 @default.
- W2109595711 creator A5072044099 @default.
- W2109595711 date "1986-01-01" @default.
- W2109595711 modified "2023-09-25" @default.
- W2109595711 title "Paramagnetic metal and oxygen species observed with Rh/γ-Al2O3 and Rh/ZrO2. Dependence on the decarbonylation temperature of [Rh4(CO)12] on alumina and zirconia supports" @default.
- W2109595711 doi "https://doi.org/10.1039/f19868201795" @default.
- W2109595711 hasPublicationYear "1986" @default.
- W2109595711 type Work @default.
- W2109595711 sameAs 2109595711 @default.
- W2109595711 citedByCount "5" @default.
- W2109595711 crossrefType "journal-article" @default.
- W2109595711 hasAuthorship W2109595711A5019125890 @default.
- W2109595711 hasAuthorship W2109595711A5019157317 @default.
- W2109595711 hasAuthorship W2109595711A5025346621 @default.
- W2109595711 hasAuthorship W2109595711A5040749610 @default.
- W2109595711 hasAuthorship W2109595711A5060072875 @default.
- W2109595711 hasAuthorship W2109595711A5072044099 @default.
- W2109595711 hasConcept C107872376 @default.
- W2109595711 hasConcept C113196181 @default.
- W2109595711 hasConcept C121332964 @default.
- W2109595711 hasConcept C123609680 @default.
- W2109595711 hasConcept C124712363 @default.
- W2109595711 hasConcept C132190689 @default.
- W2109595711 hasConcept C134132462 @default.
- W2109595711 hasConcept C161790260 @default.
- W2109595711 hasConcept C178790620 @default.
- W2109595711 hasConcept C179104552 @default.
- W2109595711 hasConcept C185592680 @default.
- W2109595711 hasConcept C26873012 @default.
- W2109595711 hasConcept C521398313 @default.
- W2109595711 hasConcept C540031477 @default.
- W2109595711 hasConcept C544153396 @default.
- W2109595711 hasConceptScore W2109595711C107872376 @default.
- W2109595711 hasConceptScore W2109595711C113196181 @default.
- W2109595711 hasConceptScore W2109595711C121332964 @default.
- W2109595711 hasConceptScore W2109595711C123609680 @default.
- W2109595711 hasConceptScore W2109595711C124712363 @default.
- W2109595711 hasConceptScore W2109595711C132190689 @default.
- W2109595711 hasConceptScore W2109595711C134132462 @default.
- W2109595711 hasConceptScore W2109595711C161790260 @default.
- W2109595711 hasConceptScore W2109595711C178790620 @default.
- W2109595711 hasConceptScore W2109595711C179104552 @default.
- W2109595711 hasConceptScore W2109595711C185592680 @default.
- W2109595711 hasConceptScore W2109595711C26873012 @default.
- W2109595711 hasConceptScore W2109595711C521398313 @default.
- W2109595711 hasConceptScore W2109595711C540031477 @default.
- W2109595711 hasConceptScore W2109595711C544153396 @default.
- W2109595711 hasIssue "6" @default.
- W2109595711 hasLocation W21095957111 @default.
- W2109595711 hasOpenAccess W2109595711 @default.
- W2109595711 hasPrimaryLocation W21095957111 @default.
- W2109595711 hasRelatedWork W1984810091 @default.
- W2109595711 hasRelatedWork W2028431075 @default.
- W2109595711 hasRelatedWork W2029396898 @default.
- W2109595711 hasRelatedWork W2086653719 @default.
- W2109595711 hasRelatedWork W2133051303 @default.
- W2109595711 hasRelatedWork W2322384667 @default.
- W2109595711 hasRelatedWork W2949469610 @default.
- W2109595711 hasRelatedWork W2951723436 @default.
- W2109595711 hasRelatedWork W2953114251 @default.
- W2109595711 hasRelatedWork W2953323435 @default.
- W2109595711 hasVolume "82" @default.
- W2109595711 isParatext "false" @default.
- W2109595711 isRetracted "false" @default.
- W2109595711 magId "2109595711" @default.
- W2109595711 workType "article" @default.