Catalytic properties of lanthanide metals introduced into Y-zeolites
β Scribed by Baba, Toshihide; Koide, Ryutaro; Ono, Yoshio
- Book ID
- 111946995
- Publisher
- The Royal Society of Chemistry
- Year
- 1991
- Tongue
- English
- Weight
- 248 KB
- Volume
- 10
- Category
- Article
- ISSN
- 0022-4936
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Europium was introduced into K'-exchanged Y-zeolite (K-Y) by impregnation from an ammoniacal solution of the metal. The catalytic properties of the zeolite were examined by the isomerization of 2,3-dimethylbut-1-ene to 2,3-dimethylbut-2-ene and the Michael reaction of cyclopent-2-enone with dimethy
Depending on preparation conditions, two types of Fe(lll) species were found (a cationic and a hydrated oxide form) and characterized in Fe(III)N H4-Y zeolites with iron,content in the range 0.3-5.8 wt %. These two forms were found to differ mutually, as well as from separate Fe20 3 phase, as far as
Zeolites HY and NaY which were contacted with zinc metal vapour at 420Β°C were investigated by carbon monoxide and xenon adsorption as well as 129Xe NMR spectroscopy. The reaction of zeolite HY results in the incorporation of Zn 2Γ· cations which are shown to populate the supercage positions S II and