Claims
- 1. A catalyst composition for the preparation of alkylene oxide adducts of active hydrogen-containing compounds consisting essentially of a xerogel consisting essentially of one or more compounds of a rare earth element and phosphorus.
- 2. The catalyst of claim 1 wherein said compound(s) of a rare earth element and phosphorus is selected from the group consisting of lanthanum phosphate, cerium phosphate, neodymium phosphate, samarium phosphate, gadolinium phosphate, dysprosium phosphate and mixtures thereof.
- 3. The catalyst of claim 2 wherein said compound(s) of a rear earth element and phosphorus is lanthanum phosphate.
- 4. The catalyst of claim 1 wherein said xerogel contains from about 40 percent by weight to about 75 percent by weight rare earth element and from about 8 percent by weight to about 15 percent by weight phosphorus.
- 5. The catalyst of claim 4 wherein said xerogel contains from about 50 percent by weight to about 70 percent by weight rare earth element and from about 10 percent by weight to about 13 percent by weight phosphorus.
- 6. The catalyst of claim 1 wherein said xerogel contains about 70 percent by weight to about 99 percent by weight solids.
- 7. The catalyst of claim 6 wherein said xerogel contains about 80 percent by weight to about 95 percent by weight solids.
- 8. A catalyst composition consisting essentially a xerogel consisting essentially one or more compounds of a rare earth element and phosphorus.
- 9. The catalyst of claim 8 wherein said compound(s) of a rare earth element and phosphorus is selected from the group consisting of lanthanum phosphate, cerium phosphate, neodymium phosphate, samarium phosphate, gadolinium phosphate, dysprosium phosphate and mixtures thereof.
- 10. The catalyst of claim 9 wherein said compound(s) of a rare earth element and phosphorus is lanthanum phosphate.
- 11. The catalyst of claim 8 wherein said xerogel contains from about 40 percent by weight to about 75 percent by weight rare earth element and from about 8 percent by weight to about 15 percent by weight phosphorus.
- 12. The catalyst of claim 11 wherein said xerogel contains from about 50 percent by weight to about 70 percent by weight rare earth element and from about 10 percent by weight to about 13 percent by weight phosphorus.
- 13. The catalyst of claim 8 wherein said xerogel contains about 70 percent by weight to about 99 percent by weight solids.
- 14. The catalyst of claim 13 wherein said xerogel contains about 80 percent by weight to about 95 percent by weight solids.
Parent Case Info
This is a division, of application Ser. No. 07/513,391, filed Apr. 23, 1990, now U.S. Pat. No. 5,118,870.
US Referenced Citations (17)
Foreign Referenced Citations (7)
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Sep 1980 |
EPX |
026546 |
Sep 1980 |
EPX |
026547 |
Sep 1980 |
EPX |
250168 |
Jun 1987 |
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Divisions (1)
|
Number |
Date |
Country |
Parent |
513391 |
Apr 1990 |
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