Results 81 to 90 of about 119 (103)
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Chemischer Informationsdienst, 1982
AbstractAn CoNaY‐Zeolithproben mit unterschiedlichem Austauschgrad wurde nach Dehydratisieren bei 370‐970 Kder Rücktausch der Co2 ‐ gegen Na ‐Ionen untersucht (DTA‐ und TG‐Charakterisierung).
F. VOGT +6 more
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AbstractAn CoNaY‐Zeolithproben mit unterschiedlichem Austauschgrad wurde nach Dehydratisieren bei 370‐970 Kder Rücktausch der Co2 ‐ gegen Na ‐Ionen untersucht (DTA‐ und TG‐Charakterisierung).
F. VOGT +6 more
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ChemInform, 1991
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
J. C. KIM, S. I. WOO
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AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
J. C. KIM, S. I. WOO
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Korean Journal of Chemical Engineering, 1993
The coordination changes of Co2+ in CoNaY/NaOHs, prepared by cobalt ion-exchange and treatment with NaOH, during dehydration at various temperatures have been investigated by UV/VIS diffuse reflectance spectroscopy. After dehydration of CoNaY/NaOHs at 473 K, the DRS bands show the formation of mixed cobalt oxide species interacted with lattice oxygen ...
Jong-Dae Han, Seong-Ihl Woo
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The coordination changes of Co2+ in CoNaY/NaOHs, prepared by cobalt ion-exchange and treatment with NaOH, during dehydration at various temperatures have been investigated by UV/VIS diffuse reflectance spectroscopy. After dehydration of CoNaY/NaOHs at 473 K, the DRS bands show the formation of mixed cobalt oxide species interacted with lattice oxygen ...
Jong-Dae Han, Seong-Ihl Woo
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The Journal of Physical Chemistry B, 1998
The influence of physisorbed water on the sulfidation of a 4 wt % cobalt containing ion exchanged CoNaY catalyst is studied by X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) and high resolution electron microscopy (HREM).
Bont, de, P.W. +5 more
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The influence of physisorbed water on the sulfidation of a 4 wt % cobalt containing ion exchanged CoNaY catalyst is studied by X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) and high resolution electron microscopy (HREM).
Bont, de, P.W. +5 more
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1995
Sodium Y zeolites partially exchanged with Co 2+ have been studied by 129-XeNMR spectroscopy. Large chemical shifts due to paramagnetic effects of Co 2+ ions are observed when the water concentration is less than 6 H 2 O/Co 2+ . The 0 term (σ value for zero xenon concentration) derived from a second-order polynomial expansion is characteristic of ...
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Sodium Y zeolites partially exchanged with Co 2+ have been studied by 129-XeNMR spectroscopy. Large chemical shifts due to paramagnetic effects of Co 2+ ions are observed when the water concentration is less than 6 H 2 O/Co 2+ . The 0 term (σ value for zero xenon concentration) derived from a second-order polynomial expansion is characteristic of ...
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Latin American and Caribbean Ethnic Studies, 2023
Alexandra Jima-González +1 more
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Alexandra Jima-González +1 more
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Il ruolo del CONAI nel sistema di gestione dei rifiuti da imballaggio
2023Beccarello, Massimo, Di Foggia, Giacomo
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Cracking the Capitalist Code: Archaeology, Resistance and the Historical Present in Ecuador
International Journal of Historical Archaeology, 2023exaly