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8048227 
Journal Article 
Investigation of polyfunctional zeolite catalysts. Communication 6. Influence of pretreatment and conditions of use on catalytic properties of nickel-zeolite systems in alkylation of benzene with ethylene 
Isakov, YI; Minachev, KM; Kalinin, VP 
1982 
1 
Bulletin of the Academy of Sciences of the USSR. Division of Chemical Science
ISSN: 0568-5230 
Kluwer Academic Publishers-Plenum Publishers 
31 
6 
1084-1090 
English 
1. The ratio between the acid (alkylating) function and oligomerizing function, as well as the activity and selectivity of the bifunctional catalysts NiNaY, NiCaNaY, and NiO/CaNaY, depend to a great degree on the catalyst pretreatment and on the conditions of catalyst use in the reaction of benzene with ethylene. 2. When the NiCaNaY and NiO/CaNaY are used in a stream of CO2, the C2H4 conversion to ethylbenzene is considerably higher, and the conversion to sec-butylbenzene is considerably lower, than in experiments without carrier gas or with N2 or CO. 3. The IR spectra of the catalysts and C2H4 and CO2 adsorbed on these catalysts have been investigated in order to clarify the reasons for the phenomena that have been observed. © 1982 Plenum Publishing Corporation.