Process for the preparation of molybdenum disulfide nanoparticles supported on titania
AssigneeShell Oil Company
InventorsRobin Kolvenbach, Marcello Stefano Rigutto, Thomas Weber, Lennart Van Haandel
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Abstract
The invention relates to a process for the preparation of nanoparticles of MoS2 supported on TiO2 wherein the preparation is performed by reductive coprecipitation using aqueous solutions containing Ti and Mo precursor salts, and wherein MoS2 may be non-promoted or Co-promoted. Further, the invention relates to the use of said nanoparticles as hydrodesulfurization catalysts.
Claims14
A two-step hydrolysis process for the preparation of nanoparticles of MoS2 supported on TiO2, wherein the two-step process comprises:
- preparing a dispersion of blue TiO2-X support particles by adding a base to an aqueous solution of TiCl3 and maintaining a resulting mixture under hydrolysis conditions for a time period;
- keeping said dispersion under an inert atmosphere, and introducing an aqueous solution of thiomolybdate to said dispersion to form said nanoparticles;
- and recovering said nanoparticles that are polycrystalline rutile and brooktie.
A two-step thermolysis process for the preparation of nanoparticles of MoS2 supported on TiO2, wherein said two-step process comprises:
- preparing a dispersion of blue TiO2-X support particles by maintaining an acidic aqueous solution of TiCl3 under thermolysis conditions for a time period;
- maintaining said dispersion under an inert atmosphere, and introducing an aqueous solution of thiomolybdate to said dispersion to form said nanoparticles;
- and
- recovering said nanoparticles that are crystalline and comprises rutile polymorph.
Dependencies are inferred from the claim text.