Matches in SemOpenAlex for { <https://semopenalex.org/work/W2068603089> ?p ?o ?g. }
Showing items 1 to 94 of
94
with 100 items per page.
- W2068603089 endingPage "3233" @default.
- W2068603089 startingPage "3233" @default.
- W2068603089 abstract "Temperature regimes for the uptake of hydrogen by reaction with various surface species on Rh/CeO2 catalysts obtained from an RhCl3 precursor are identified by temperature-programmed reduction (TPR). Evidence is obtained from TPD for the presence of hydrogen having different energies of desorption from Rh/CeO2 after prereductions at 373 and 653 K [low-temperature reduction (LTR) and moderate-temperature reduction (MTR), respectively]. 1H NMR and H–D isotope exchange studies at room temperature are used to gain insights into the nature and relative amounts of ‘weakly’ and ‘strongly’ chemisorbed forms of hydrogen (H2 and D2) detectable at Rh/CeO2 surfaces. After prereduction at various temperatures over LTR Rh/CeO2, a weakly chemisorbed form, associated with metallic rhodium surfaces, is observed to promote H–D isotope exchange with D2 at 295 K. However, such exchange is strongly inhibited by prior outgassing at 473 K or by reduction of Rh/CeO2 at temperatures in the range 473–653 K (MTR). Conversely, the latter prereductions are shown by TPD studies to enhance greatly the amount of hydrogen strongly chemisorbed by the CeO2 support. Evidence for MTR-induced inhibition of access to metallic rhodium surfaces also emerges from studies using carbon monoxide to probe the accessibility of various rhodium sites. However, ‘direct’ blockage of rhodium surface sites by hydrogen species strongly chemisorbed thereon is considered to be less probable than ‘indirect’ inhibitions arising initially from electronic effects associated with MTR-induced formation of oxygen vacancies and surface hydrides located at Rh/ceria microinterfaces. Together these eventually progress to decoration/encapsulation of the rhodium particles." @default.
- W2068603089 created "2016-06-24" @default.
- W2068603089 creator A5008609525 @default.
- W2068603089 creator A5014302717 @default.
- W2068603089 creator A5019015371 @default.
- W2068603089 creator A5024406357 @default.
- W2068603089 creator A5057553552 @default.
- W2068603089 creator A5076254702 @default.
- W2068603089 date "1992-01-01" @default.
- W2068603089 modified "2023-10-14" @default.
- W2068603089 title "Effects of prereduction at moderate temperatures on Rh/CeO2 on the interactions of D2, H2 and CO with Rh/CeO2" @default.
- W2068603089 cites W1523191060 @default.
- W2068603089 cites W1985383353 @default.
- W2068603089 cites W2000906616 @default.
- W2068603089 cites W2003784955 @default.
- W2068603089 cites W2012407978 @default.
- W2068603089 cites W2012915914 @default.
- W2068603089 cites W2020942298 @default.
- W2068603089 cites W2050717418 @default.
- W2068603089 cites W2055071469 @default.
- W2068603089 cites W2083558783 @default.
- W2068603089 cites W2084165466 @default.
- W2068603089 cites W2111030667 @default.
- W2068603089 cites W2127027614 @default.
- W2068603089 cites W21996402 @default.
- W2068603089 cites W2276751314 @default.
- W2068603089 cites W2953184909 @default.
- W2068603089 doi "https://doi.org/10.1039/ft9928803233" @default.
- W2068603089 hasPublicationYear "1992" @default.
- W2068603089 type Work @default.
- W2068603089 sameAs 2068603089 @default.
- W2068603089 citedByCount "37" @default.
- W2068603089 countsByYear W20686030892012 @default.
- W2068603089 countsByYear W20686030892017 @default.
- W2068603089 crossrefType "journal-article" @default.
- W2068603089 hasAuthorship W2068603089A5008609525 @default.
- W2068603089 hasAuthorship W2068603089A5014302717 @default.
- W2068603089 hasAuthorship W2068603089A5019015371 @default.
- W2068603089 hasAuthorship W2068603089A5024406357 @default.
- W2068603089 hasAuthorship W2068603089A5057553552 @default.
- W2068603089 hasAuthorship W2068603089A5076254702 @default.
- W2068603089 hasConcept C1012414 @default.
- W2068603089 hasConcept C121332964 @default.
- W2068603089 hasConcept C147789679 @default.
- W2068603089 hasConcept C150394285 @default.
- W2068603089 hasConcept C153294291 @default.
- W2068603089 hasConcept C161790260 @default.
- W2068603089 hasConcept C162711632 @default.
- W2068603089 hasConcept C178790620 @default.
- W2068603089 hasConcept C179104552 @default.
- W2068603089 hasConcept C185592680 @default.
- W2068603089 hasConcept C33790079 @default.
- W2068603089 hasConcept C39353612 @default.
- W2068603089 hasConcept C512735826 @default.
- W2068603089 hasConcept C512968161 @default.
- W2068603089 hasConcept C521398313 @default.
- W2068603089 hasConcept C544153396 @default.
- W2068603089 hasConceptScore W2068603089C1012414 @default.
- W2068603089 hasConceptScore W2068603089C121332964 @default.
- W2068603089 hasConceptScore W2068603089C147789679 @default.
- W2068603089 hasConceptScore W2068603089C150394285 @default.
- W2068603089 hasConceptScore W2068603089C153294291 @default.
- W2068603089 hasConceptScore W2068603089C161790260 @default.
- W2068603089 hasConceptScore W2068603089C162711632 @default.
- W2068603089 hasConceptScore W2068603089C178790620 @default.
- W2068603089 hasConceptScore W2068603089C179104552 @default.
- W2068603089 hasConceptScore W2068603089C185592680 @default.
- W2068603089 hasConceptScore W2068603089C33790079 @default.
- W2068603089 hasConceptScore W2068603089C39353612 @default.
- W2068603089 hasConceptScore W2068603089C512735826 @default.
- W2068603089 hasConceptScore W2068603089C512968161 @default.
- W2068603089 hasConceptScore W2068603089C521398313 @default.
- W2068603089 hasConceptScore W2068603089C544153396 @default.
- W2068603089 hasIssue "21" @default.
- W2068603089 hasLocation W20686030891 @default.
- W2068603089 hasOpenAccess W2068603089 @default.
- W2068603089 hasPrimaryLocation W20686030891 @default.
- W2068603089 hasRelatedWork W1983955297 @default.
- W2068603089 hasRelatedWork W1995415032 @default.
- W2068603089 hasRelatedWork W2006471732 @default.
- W2068603089 hasRelatedWork W2016464001 @default.
- W2068603089 hasRelatedWork W2022069594 @default.
- W2068603089 hasRelatedWork W2033909621 @default.
- W2068603089 hasRelatedWork W2123354763 @default.
- W2068603089 hasRelatedWork W276890413 @default.
- W2068603089 hasRelatedWork W2953323435 @default.
- W2068603089 hasRelatedWork W4252877618 @default.
- W2068603089 hasVolume "88" @default.
- W2068603089 isParatext "false" @default.
- W2068603089 isRetracted "false" @default.
- W2068603089 magId "2068603089" @default.
- W2068603089 workType "article" @default.