Matches in SemOpenAlex for { <https://semopenalex.org/work/W1972777654> ?p ?o ?g. }
- W1972777654 endingPage "4073" @default.
- W1972777654 startingPage "4064" @default.
- W1972777654 abstract "The redox behavior of Cu/ZSM-5 zeolites prepared by ion exchange from Cu2+ aqueous solutions has been followed by a variety of spectroscopic techniques to provide a thorough picture of the so-called “self-reduction” of cupric ions, which occurs upon dehydration of the hydrated system at various temperatures, and of the reverse process of reoxidation as well. Conflicting hypotheses on both these processes are, in fact, present in the literature. The experimental techniques employed in this work are electron paramagnetic resonance (EPR), IR, and optical spectroscopies, extended X-ray absorption fine structure, and X-ray absorption near-edge structure. The early stages of dehydration (from room temperature to about 470 K) involve cupric ion migration and formation of EPR silent moieties but no reduction to Cu+. The onset of this latter phenomenon starts at 470 K and, in the range 470−670 K, involves the majority of copper ions present in the system. Rehydration of Cu+-containing samples does not cause direct Cu+ oxidation to Cu2+ but favor this latter process when O2 is used as oxidant. Oxidation of Cu+ to Cu2+ by molecular oxygen, in fact, does not take place at room temperature if O2 is contacted with the dehydrated material but easily occurs when oxygen is adsorbed on rehydrated samples at the same temperature." @default.
- W1972777654 created "2016-06-24" @default.
- W1972777654 creator A5005716916 @default.
- W1972777654 creator A5014777877 @default.
- W1972777654 creator A5025030109 @default.
- W1972777654 creator A5038458365 @default.
- W1972777654 creator A5065176254 @default.
- W1972777654 creator A5078950717 @default.
- W1972777654 date "2000-03-30" @default.
- W1972777654 modified "2023-10-16" @default.
- W1972777654 title "Oxidation States of Copper Ions in ZSM-5 Zeolites. A Multitechnique Investigation" @default.
- W1972777654 cites W15024157 @default.
- W1972777654 cites W1970029334 @default.
- W1972777654 cites W1972680338 @default.
- W1972777654 cites W1973658827 @default.
- W1972777654 cites W1975039465 @default.
- W1972777654 cites W1975132586 @default.
- W1972777654 cites W1975658141 @default.
- W1972777654 cites W1978325670 @default.
- W1972777654 cites W1978723456 @default.
- W1972777654 cites W1981934220 @default.
- W1972777654 cites W1983730820 @default.
- W1972777654 cites W1985750401 @default.
- W1972777654 cites W1987735976 @default.
- W1972777654 cites W1992758362 @default.
- W1972777654 cites W1993294961 @default.
- W1972777654 cites W1993490737 @default.
- W1972777654 cites W1995923046 @default.
- W1972777654 cites W2003111425 @default.
- W1972777654 cites W2004518929 @default.
- W1972777654 cites W2005642224 @default.
- W1972777654 cites W2008266675 @default.
- W1972777654 cites W2013535141 @default.
- W1972777654 cites W2016061737 @default.
- W1972777654 cites W2018486908 @default.
- W1972777654 cites W2021426228 @default.
- W1972777654 cites W2031838703 @default.
- W1972777654 cites W2034545634 @default.
- W1972777654 cites W2041590217 @default.
- W1972777654 cites W2041667125 @default.
- W1972777654 cites W2043558074 @default.
- W1972777654 cites W2057270088 @default.
- W1972777654 cites W2058142348 @default.
- W1972777654 cites W2062017525 @default.
- W1972777654 cites W2065018695 @default.
- W1972777654 cites W2065437484 @default.
- W1972777654 cites W2065699834 @default.
- W1972777654 cites W2067705373 @default.
- W1972777654 cites W2073829366 @default.
- W1972777654 cites W2077685383 @default.
- W1972777654 cites W2081707140 @default.
- W1972777654 cites W2083539406 @default.
- W1972777654 cites W2086434972 @default.
- W1972777654 cites W2087199704 @default.
- W1972777654 cites W2087224749 @default.
- W1972777654 cites W2093382758 @default.
- W1972777654 cites W2131411051 @default.
- W1972777654 cites W2163214896 @default.
- W1972777654 cites W2314616528 @default.
- W1972777654 cites W2952707208 @default.
- W1972777654 doi "https://doi.org/10.1021/jp993893u" @default.
- W1972777654 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/28960984" @default.
- W1972777654 hasPublicationYear "2000" @default.
- W1972777654 type Work @default.
- W1972777654 sameAs 1972777654 @default.
- W1972777654 citedByCount "245" @default.
- W1972777654 countsByYear W19727776542012 @default.
- W1972777654 countsByYear W19727776542013 @default.
- W1972777654 countsByYear W19727776542014 @default.
- W1972777654 countsByYear W19727776542015 @default.
- W1972777654 countsByYear W19727776542016 @default.
- W1972777654 countsByYear W19727776542017 @default.
- W1972777654 countsByYear W19727776542018 @default.
- W1972777654 countsByYear W19727776542019 @default.
- W1972777654 countsByYear W19727776542020 @default.
- W1972777654 countsByYear W19727776542021 @default.
- W1972777654 countsByYear W19727776542022 @default.
- W1972777654 countsByYear W19727776542023 @default.
- W1972777654 crossrefType "journal-article" @default.
- W1972777654 hasAuthorship W1972777654A5005716916 @default.
- W1972777654 hasAuthorship W1972777654A5014777877 @default.
- W1972777654 hasAuthorship W1972777654A5025030109 @default.
- W1972777654 hasAuthorship W1972777654A5038458365 @default.
- W1972777654 hasAuthorship W1972777654A5065176254 @default.
- W1972777654 hasAuthorship W1972777654A5078950717 @default.
- W1972777654 hasConcept C121332964 @default.
- W1972777654 hasConcept C125287762 @default.
- W1972777654 hasConcept C145148216 @default.
- W1972777654 hasConcept C147789679 @default.
- W1972777654 hasConcept C150394285 @default.
- W1972777654 hasConcept C153294291 @default.
- W1972777654 hasConcept C159985019 @default.
- W1972777654 hasConcept C178790620 @default.
- W1972777654 hasConcept C179104552 @default.
- W1972777654 hasConcept C184651966 @default.
- W1972777654 hasConcept C185592680 @default.
- W1972777654 hasConcept C187961010 @default.
- W1972777654 hasConcept C192562407 @default.