( 1669 of 1669 ) |
United States Patent | 3,664,970 |
De Maio | May 23, 1972 |
The invention is directed to improvements in the production of ethylene oxide by the controlled, partial oxidation of ethylene in the presence of a silver supported catalyst. New results and advantages including elimination of the need for halogenated inhibitors in the ethylene oxide process are attributable to the use of a silver impregnated catalyst comprising inert porous support particles wherein at least 90 percent of the pore diameters fall within a limited range and the average pore diameter falls within a narrow range. The invention is also attended by supplemental benefits in the form of increased productivity and/or reduced operating temperature.
Inventors: | De Maio; Dennis A. (Staten Island, NY) |
Assignee: |
Halcon International, Inc.
( |
Appl. No.: | 04/817,169 |
Filed: | April 17, 1969 |
Current U.S. Class: | 502/243 ; 549/534; 549/536; 549/537 |
Current International Class: | C07D 301/00 (20060101); C07D 301/10 (20060101); B01J 23/54 (20060101); B01J 23/66 (20060101); B01J 23/50 (20060101); B01J 23/48 (20060101); B01J 23/89 (20060101); B01J 35/00 (20060101); B01J 35/10 (20060101); B01j 011/40 () |
Field of Search: | 252/454,455,476 260/348.5F |
2799687 | July 1957 | Gould et al. |
3207700 | September 1965 | Saffer |
3258433 | June 1966 | Lambert et al. |
3420784 | January 1969 | Keith et al. |
3501417 | March 1970 | De Maio |