Patent ID: 8354357
Filing Date: 2013-01-15
Classification: B01J,C01B,C07C

Abstract:
1. A method for making a cobalt-molybdenum-sulfide composition, said method comprising the steps of: (i) dissolving ammonium dimolybdate, [NH (ii) combining hydrogen sulfide with at least some of said molybdate solution, thereby producing a tetrathiomolybdate solution comprising [MoS (iii) combining a Co(II) solution with at least some of said tetrathiomolybdate solution to form a first precipitate within a suspension; (iv) combining sulfuric acid with at least some of said suspension, to form a second precipitate; (v) filtering said second precipitate, wherein said filtering removes a portion of water present in said second precipitate, thereby creating a filter cake; (vi) thermally processing said filter cake to produce a calcined material comprising cobalt, molybdenum, and sulfur; wherein at least some of said cobalt and some of said sulfur are present as a cobalt-sulfur association, and wherein the molar ratio of sulfur to cobalt (S:Co) in the association is at least 1.2, said molar ratio S:Co calculated after assuming all of said molybdenum is present as MoS