US Patent Issued to Chevron Phillips Chemical on May 13 for "Methods for chromium catalyst activation using oxygen-enriched fluidization gas" (Texas Inventors)

ALEXANDRIA, Va., June 12 -- United States Patent no. 12,297,310, issued on May 13, was assigned to Chevron Phillips Chemical Co. LP (The Woodlands, Texas).

"Methods for chromium catalyst activation using oxygen-enriched fluidization gas" was invented by Ralph W Romig (Kingwood, Texas), James E. Hein (Houston), Troy Bretz (Tomball, Texas) and Zhihui Gu (Houston).

According to the abstract* released by the U.S. Patent & Trademark Office: "Processes for producing an activated chromium catalyst are disclosed, and these processes comprise contacting a supported chromium catalyst with a gas stream containing from 25-60 vol % oxygen at a peak activation temperature of 550-900deg C. to produce the activated chromium catalyst. The linear velocity ...