Emerald green alumina
AssigneeChevron Research Company
InventorWilliam A. Blanton, Jr.
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Abstract
A process is provided for preparing catalytically active emerald green colored alumina by contacting colorless alumina with carbonyl sulfide. This material catalyzes the reduction of sulfur dioxide by carbon monoxide.
Claims6
A method for preparing dark emerald green colored alumina, comprising contacting white alumina with a contact material consisting essentially of carbonyl sulfide at an elevated temperature in the range of from about 200.degree.-900.degree. C and for a period sufficient to produce said color.
A method for preparing dark emerald green colored alumina, comprising contacting white alumina with a contact material consisting essentially of carbonyl sulfide, said contacting being at a temperature of about 440.degree. C for a period of about 3 hours.
Dependencies are inferred from the claim text.