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US 7,544,632 B2Granted
Bulk Ni-Mo-W catalysts made from precursors containing an organic agent
AssigneeExxonMobil Research and Engineering Company
InventorsStuart L. Soled, Sabato Miseo, Zhiguo Hou
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Abstract
Novel bulk tri-metallic catalysts for use in the hydroprocessing of hydrocarbon feeds, as well as a method for preparing such catalysts. The catalysts are prepared from a catalyst precursor containing an organic agent.
Claims18
A bulk multi-metallic catalyst composition represented by the formula:
- (X)a(Mo1-xWx)b[CH3(CH2)dN(CH3)3]eOz
- wherein X is one or more Group VIII non-noble metals, d is an integer from about 10 to about 40, x is between 0 and 1, the molar ratio of e:a is ≦2.0/1 and z=((2a+6b)+e)/2 and the molar ratio of a:
- (b) is 0.5/1 to 3/1;
- and wherein said catalyst composition after sulfidation is comprised of stacked layers of (Mo1-xWx)S2 stoichiometry, such that the average stack height is about 10 Å to about 20 Å.
1 more element
A method for preparing a catalyst precursor composition represented by the formula:
- (X)a(Mo1-xWx)b[CH3(CH2)dN(CH3)3]eOz
- wherein X is one or more Group VIII non-noble metals, d is an integer from about 10 to about 40, x is between 0 and 1, the molar ratio of e:a is ≦2.0/1 and z=((2a+6b)+e)/2 and the molar ratio of a:
- (b) is 0.5/1 to 3/1;
- which method comprises:
- (a) preparing a first aqueous solution of a Group VIII non-noble metal water soluble salt;
- (b) preparing a second aqueous solution containing Mo and W water soluble salts;
- (c) heating both said first and second solutions to a temperature from about 60° C. to about 150° C.;
- (d) adding an effective amount of an organic agent into said second aqueous solution;
- (e) introducing at least a portion of said second aqueous solution of step (d) into said first aqueous solution;
- and
- (f) heating the resulting solution of step (e) to an effective temperature to cause the precipitation of said catalyst precursor composition.
8 more elements
Dependencies are inferred from the claim text.