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- W2334508429 abstract "The catalytic activities and selectivities for the ethylene hydration of zeolites A exchanged with H, Li, Na, K, Be, Mg, Ca, Sr, Ba, Cu, Ag, Zn, Cd, La, or Ce and zeolites Y exchanged with La or Ce have been examined. The catalytic activities at 220°C were found to vary in order of La-Y>Ce-Y>Mg-A>Cd-A> Zn-A>Ca-A>Ag-A>Sr-A>La-A-Ce-A, the other zeolites being inactive, Both Li-A and Na-A showed catalytic activity at 300°C. The active cation exchanged zeolites A except Ag-A were found to be highly selective for ethanol formation, but Ag-A whose crystal structure was destroyed during the reaction formed acetaldehyde together with ethanol. On the other hand, the cation exchanged zeolites Y having larger pore sizes gave rise to the polymerization of ethylene. It was also found that the catalytic activities of the cation exchanged zeolites A correlated with their acidic properties expressed by the heat of adsorption of ethylene or the electronegativities of exchanged cations, indicating that the active sites of the catalysts are Bronsted acid sites. The relation of the ionic radii of exchanged cations with their catalytic activities for ethylene hydration was discussed in comparison with those for several types of acid-catalyzed reactions over cation exchanged zeolites A, X and Y." @default.
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- W2334508429 date "1972-01-01" @default.
- W2334508429 modified "2023-09-24" @default.
- W2334508429 title "Hydration Reaction of Ethylene Catalyzed by Cation Exchanged Zeolites" @default.
- W2334508429 doi "https://doi.org/10.1627/jpi1958.15.113" @default.
- W2334508429 hasPublicationYear "1972" @default.
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