Catalysts having increased stability
AssigneeExxonMobile Research and Engineering Company
InventorsJean W. Beeckman, Stephen J. McCarthy, Chuansheng Bai, William G. Borghard, Sanket K. Desai, Hyung S. Woo
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Abstract
Bulk catalysts that include a Group VI metal, a Group VIII metal, and at least 10-60% of an organic compound based component are formed. The bulk catalysts have increased stability through the use of a stabilizer in the organic compound based component, the use of an improved gas phase sulfidation, or a combination thereof. The bulk catalysts are suitable for hydroprocessing of hydrocarbon feeds.
Claims12
A metallic catalyst precursor composition comprising bulk catalyst particles comprising a Group VIII metal, a Group VIB metal and an organic compound-based component formed by drying an aqueous solution of the Group VIII metal and the Group VIB metal and at least one organic complexing agent and polyvinyl alcohol as a stabilizer agent such that the organic compound-based component is derived from the organic complexing agent and the stabilizer agent, wherein the ratio of organic complexing agent to stabilizer agent is from 3:2 to 10:1.
A sulfided metallic catalyst formed by sulfiding a catalyst formed from a catalyst precursor comprising bulk catalyst particles a Group VIII metal, a Group VIB metal and an organic compound-based component formed by drying an aqueous solution of the Group VIII metal and the Group VIB metal and at least one organic complexing agent and polyvinyl alcohol as a stabilizer agent such that the organic compound-based component is derived from the organic complexing agent and the stabilizer agent, wherein the ratio of the at least one organic complexing agent to the at least one stabilizer agent is from 3:2 to 10:1;
- the metallic catalyst being formed by gas-phase sulfidation at a temperature of 350′C or less.
Dependencies are inferred from the claim text.