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AssigneeExxonMobil Research and Engineering Company
InventorsJane C. Cheng, Sal Miseo, Stuart L. Soled, John S. Buchanan, Jennifer S. Feeley
Estimating the term…
A substantially surface-deactivated catalyst composition that is stable at least to 300° C. The catalyst includes a zeolite catalyst (e.g., ZSM-22, ZSM-23, or ZSM-57) having active internal Brönsted acid sites and a surface-deactivating amount of a rare earth or yttrium oxide (e.g., chosen from lanthanum oxide or lanthanides oxide). This to catalyst is preferably used in a process for producing a higher olefin by oligomerizing a light olefin, wherein the process includes contacting a light olefin under oligomerization conditions with the substantially surface-deactivated catalyst composition.
A surface-deactivated catalyst composition comprising a zeolite catalyst having active internal Brönsted acid sites and containing a surface-deactivating amount of a rare earth or yttrium oxide, and wherein the amount ranges from greater than 0.84 wt. % to less than 2.52 wt. %.
6-17. (canceled)
A method of making a surface-deactivated catalyst composition comprising:
Dependencies are inferred from the claim text.