| 摘要 |
The Ag carried catalyst comprises Nb as one of assistant catalysts which may be alkali metal compounds, alkali earth metal compounds, N compounds, halogens, and halogen compounds The Nb content may be 10-10000ppm. The activity of the catalyst and selectivity of ethylene oxide are improved. In an example, NbO(HC2H4)34H2O was dissolved, together with Cs nitrate, ethylene diamine, ethanolamine and Ag oxalate are added and alumina carrier is impregnated with them. |
