ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Preparation of ethylene oxide by direct oxidation of ethylene. Effect of 1,2-dichloroethane vapors on the activity and selectivity of the catalyst

J. Janda and P. Kľúčovský

Slovnaft, Bratislava

Abstract: Minuite amounts of Cl, S, Se, and Te compds. in the active layer of the catalyst improve its selectivity and prevent total oxidn. of C₂H₄. The influence of 1,2-dichloroethane vapors (I) on the activity of an Ag catalyst during direct oxidn. of C₂H₄ to ethylene oxide is investigated. In the tested range of 0.006, 0.02, 0.05, 0.2, and 0.5 ppm. I, the highest activity is reached with 0.05 ppm. The selectivity increases to 0.5 ppm. In concns. above 1 ppm., I will poison the catalyst. The optimum value for I is in the range of 0.1-0.2 ppm. which increases selectivity from 50% to 60-65%; conversion decreases from 35% to 30%.

Full paper in Portable Document Format: 204a267.pdf (in Slovak)

Chemical Papers 20 (4) 267–273 (1966)