FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1998589616> ?p ?o ?g. }

• W1998589616 endingPage "22174" @default.
• W1998589616 startingPage "22167" @default.
• W1998589616 abstract "Vanadium was introduced in dealuminated β zeolite by impregnation with a VIVOSO4 aqueous solution at 353 K in air or argon (to prevent oxidation of VIV), leading to VSiβ and VSiβ-Ar zeolites, respectively. The samples were characterized by spectroscopy, XRD, and N2-physisorption. The oxidation state and environment of V in Siβ zeolite depend on the preparation parameters (i.e., on the way the solid is recovered after impregnation and on the drying temperature). In solids recovered by centrifugation, washed with distilled water, and then dried overnight at 298 K in argon, vanadium is found as extra-lattice octahedral VIV ions as evidenced by EPR. In contrast, in solids not washed but directly dried overnight at 353 K in air or argon, vanadium is found in both cases as lattice tetrahedral VV ions. These ions are incorporated into vacant T sites associated with SiOH, SiO-, oxygen vacancies (OVs) or nonbridging oxygen (NBOs) defects as shown by diffuse reflectance UV−visible, 51V MAS NMR, FT-IR, and photoluminescence. The oxidation to VV ions is suggested to be due to an electron transfer from VO2+ to trigonal ≡Si+ defect sites followed by reaction of the resulting VO2+ ions with particular defects of vacant T sites. These processes occur already upon drying of V-impregnated Siβ at 353 K. 51V MAS NMR allows detection of one kind of lattice tetrahedral V ions in VSiβ and two kinds in VSiβ-Ar. The formation of different kinds of tetrahedral V species is related to the presence in vacant T sites of Siβ zeolite of different types of defect sites such as trigonal ≡Si+ defect or SiOH and SiO- groups." @default.
• W1998589616 created "2016-06-24" @default.
• W1998589616 creator A5046419705 @default.
• W1998589616 creator A5076466982 @default.
• W1998589616 date "2005-10-29" @default.
• W1998589616 modified "2023-09-24" @default.
• W1998589616 title "Oxidation State of Vanadium Introduced in Dealuminated β Zeolite by Impregnation with V^IVOSO₄ Solution: Influence of Preparation Parameters" @default.
• W1998589616 cites W1492452476 @default.
• W1998589616 cites W182827608 @default.
• W1998589616 cites W1965647443 @default.
• W1998589616 cites W1971325711 @default.
• W1998589616 cites W1972052421 @default.
• W1998589616 cites W1975350349 @default.
• W1998589616 cites W1987574577 @default.
• W1998589616 cites W1991124303 @default.
• W1998589616 cites W1992017120 @default.
• W1998589616 cites W1995433602 @default.
• W1998589616 cites W1995539803 @default.
• W1998589616 cites W2000077631 @default.
• W1998589616 cites W2010707789 @default.
• W1998589616 cites W2011934302 @default.
• W1998589616 cites W2014416110 @default.
• W1998589616 cites W2016779778 @default.
• W1998589616 cites W2017346174 @default.
• W1998589616 cites W2017694273 @default.
• W1998589616 cites W2017698524 @default.
• W1998589616 cites W2018016840 @default.
• W1998589616 cites W2018298398 @default.
• W1998589616 cites W2019584615 @default.
• W1998589616 cites W2024738887 @default.
• W1998589616 cites W2025678627 @default.
• W1998589616 cites W2028186104 @default.
• W1998589616 cites W2039098015 @default.
• W1998589616 cites W2044482732 @default.
• W1998589616 cites W2046374068 @default.
• W1998589616 cites W2047631109 @default.
• W1998589616 cites W2052536213 @default.
• W1998589616 cites W2054111649 @default.
• W1998589616 cites W2057456648 @default.
• W1998589616 cites W2058098574 @default.
• W1998589616 cites W2058459441 @default.
• W1998589616 cites W2066515946 @default.
• W1998589616 cites W2070283352 @default.
• W1998589616 cites W2070303235 @default.
• W1998589616 cites W2071247173 @default.
• W1998589616 cites W2075571039 @default.
• W1998589616 cites W2078768498 @default.
• W1998589616 cites W2083945255 @default.
• W1998589616 cites W2085410528 @default.
• W1998589616 cites W2091239710 @default.
• W1998589616 cites W2106163173 @default.
• W1998589616 cites W2133316080 @default.
• W1998589616 cites W2312199777 @default.
• W1998589616 cites W269355413 @default.
• W1998589616 cites W2949720911 @default.
• W1998589616 cites W2950626569 @default.
• W1998589616 cites W3021204293 @default.
• W1998589616 cites W386176700 @default.
• W1998589616 doi "https://doi.org/10.1021/jp0582134" @default.
• W1998589616 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/16853884" @default.
• W1998589616 hasPublicationYear "2005" @default.
• W1998589616 type Work @default.
• W1998589616 sameAs 1998589616 @default.
• W1998589616 citedByCount "21" @default.
• W1998589616 countsByYear W19985896162012 @default.
• W1998589616 countsByYear W19985896162013 @default.
• W1998589616 countsByYear W19985896162014 @default.
• W1998589616 countsByYear W19985896162015 @default.
• W1998589616 countsByYear W19985896162016 @default.
• W1998589616 countsByYear W19985896162017 @default.
• W1998589616 countsByYear W19985896162019 @default.
• W1998589616 countsByYear W19985896162023 @default.
• W1998589616 crossrefType "journal-article" @default.
• W1998589616 hasAuthorship W1998589616A5046419705 @default.
• W1998589616 hasAuthorship W1998589616A5076466982 @default.
• W1998589616 hasConcept C113196181 @default.
• W1998589616 hasConcept C121332964 @default.
• W1998589616 hasConcept C145148216 @default.
• W1998589616 hasConcept C147789679 @default.
• W1998589616 hasConcept C150394285 @default.
• W1998589616 hasConcept C161790260 @default.
• W1998589616 hasConcept C178790620 @default.
• W1998589616 hasConcept C179104552 @default.
• W1998589616 hasConcept C184651966 @default.
• W1998589616 hasConcept C185592680 @default.
• W1998589616 hasConcept C187961010 @default.
• W1998589616 hasConcept C192562407 @default.
• W1998589616 hasConcept C198819137 @default.
• W1998589616 hasConcept C2778077586 @default.
• W1998589616 hasConcept C2778591166 @default.
• W1998589616 hasConcept C2780050857 @default.
• W1998589616 hasConcept C46141821 @default.
• W1998589616 hasConcept C49040817 @default.
• W1998589616 hasConcept C504678139 @default.
• W1998589616 hasConcept C540031477 @default.
• W1998589616 hasConcept C547737533 @default.
• W1998589616 hasConcept C8010536 @default.
• W1998589616 hasConcept C85080765 @default.

• next