FIELD: organic synthesis.
SUBSTANCE: invention relates to olefin epoxidation method and methods for preparing 1,2-diol or 1,2-diol ether, or alkylamine including conversion of olefin oxide into 1,2-diol or 1,2-diol ether, or alkylamine. Olefin epoxidation method comprises: (a) preliminarily impregnating high-selectivity silver-based epoxidation catalyst with organohalogen compound; (b) passing, over preliminarily impregnated catalyst, a material free of organohalogen compound or containing it in concentration not higher than 2·10-4 mol % (calculated for halogen) over a period of time from 15 h to 200 h; and (c) contacting resulting catalyst with material containing olefin, oxygen, and organohalogen compound wherein concentration of organohalogen compound is by at least 0.2·10-4 mol % higher than that of compound in step (b). Preparation of 1,2-diol, 1,2-diol ether, or alkylamine is also described.
EFFECT: optimized process parameters.
13 cl, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF IMPROVING SELECTIVITY OF CATALYST AND A OLEFIN EPOXIDATION PROCESS | 2003 |
|
RU2314156C2 |
| METHOD AND SYSTEMS FOR EPOXIDATION OF OLEFIN | 2002 |
|
RU2294327C2 |
| METHOD OF INCREASING SELECTIVITY OF EPOXIDATION CATALYST | 2012 |
|
RU2606504C2 |
| METHOD FOR OLEFINES EPOXIDATION AND APPLIED CATALYST | 2004 |
|
RU2328491C2 |
| REACTOR SYSTEM, ABSORBENT AND METHOD OF CONDUCTING REACTION IN FED MATERIAL | 2008 |
|
RU2474470C2 |
| METHOD FOR IMPROVING EFFICIENCY OF CATALYST FOR PRODUCING ETHYLENE OXIDE | 2011 |
|
RU2588118C2 |
| METHOD FOR IMPROVING SELECTIVITY OF EO CATALYST | 2011 |
|
RU2583786C2 |
| METHOD AND SYSTEM FOR OLEFIN EPOXYDATION | 2002 |
|
RU2296126C2 |
| CATALYST CARRIER, CATALYST AND USE THEREOF | 2012 |
|
RU2660419C2 |
| METHOD FOR OBTAINING ETHYLENEOXIDE WITH IMPROVED REGULATION | 2011 |
|
RU2581365C2 |
