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AssigneeExxonMobil Research and Engineering Company
InventorsChuansheng Bai, El-Mekki El-Malki, Jeff Elks, Zhiguo Hou, Jon M. McConnachie, Pallassana S. Venkataraman, Jason Wu, Jun Han, Daniel Giaquinta, Alfred Hagemeyer, Valery Sokolovskii, Anthony F. Volpe, Jr., David Michael Lowe
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Bulk metallic catalysts comprised of a Group VIII metal and a Group VIB metal and methods for synthesizing bulk metallic catalysts are provided. The catalysts are prepared by a method wherein precursors of both metals are mixed and interacted with at least one organic acid, such as glyoxylic acid, dried, calcined, and sulfided. The catalysts are used for hydroprocessing, particularly hydrodesulfurization and hydrodenitrogenation, of hydrocarbon feedstocks.
An amorphous bulk metallic catalyst precursor composition comprising a) cobalt, b) molybdenum or tungsten, and c) from at least about 20 wt. % to about 60 wt. % of a carbon-containing compound based on a carboxylic acid-containing organic complexing agent, the catalyst precursor composition having a surface area of 16 m2/g or less based on BET.
A sulfided bulk metallic catalyst comprising a) cobalt, b) molybdenum or tungsten, and c) at least about 10 wt. % carbon content, wherein the catalyst is formed by sulfiding an amorphous catalyst precursor composition comprising 1) cobalt, 2) molybdenum or tungsten, and 3) from at least about 20 wt. % to about 60 wt. % of a carboxylic acid-containing organic complexing agent, the catalyst precursor composition having a surface area of 16 m2/g or less based on BET.
The sulfided bulk metallic catalyst of claime 6, wherein the surface area of the catalyst precursor composition is less than about 10 m2/g.
An amorphous catalyst precursor composition comprising a) cobalt, b) molybdenum or tungsten, c) carbon atoms from a carboxylic acid-containing organic complexing agent, and d) oxygen atoms, such that the catalyst precursor composition exhibits a carbon content from about 10 wt % to about 25 wt %, a ratio of cobalt to molybdenum or tungsten from about 0.2 to about 0.6, and a surface area of about 16 m2/g or less.
Dependencies are inferred from the claim text.