Journal of the Korean Magnetic Resonance Society (한국자기공명학회논문지)
- Volume 11 Issue 2
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- Pages.95-109
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- 2007
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- 1226-6531(pISSN)
V(IV) Species, Location and Adsorbate Interactions in VH-SAPO-42 Studied by ESR and Electron Spin-Echo Modulation Spectroscopies
- Back, Gern-Ho (Department of Chemistry, Changwon National University) ;
- Yu, Jong-Sung (Department of Chemistry, BK21 NanoBio Sensor Research Team, Hannam University) ;
- Lee, Hye-Young (Department of Chemistry, Changwon National University) ;
- Kim, Min-Sik (Department of Chemistry, BK21 NanoBio Sensor Research Team, Hannam University) ;
- Lee, Yong-Ill (Department of Chemistry, Changwon National University)
- Published : 2007.12.20
Abstract
Vanadium-incorporated aluminophosphate microporous molecular sieve VH-SAPO-42 has been studied by electron spin resonance(ESR) and electron spin-echo modulation (ESEM) spectroscopies to determine the vanadium location and interaction with various adsorbate molecules. The results are interpreted in terms of V(IV) ion location and coordination geometry. Assynthesized VH-SAPO-42 contains only vanadyl species with distorted octahedral or trigonal bipyramidal coordination. Vanadium incorporated into H-SAPO-42 occupied extra-framework site. After calcinations in