Chemistry of inorganic compounds – Oxygen or compound thereof – Metal containing
Reexamination Certificate
2009-12-04
2010-06-22
Vanoy, Timothy C (Department: 1793)
Chemistry of inorganic compounds
Oxygen or compound thereof
Metal containing
C423S580100
Reexamination Certificate
active
07740828
ABSTRACT:
Multimetallic anionic clays (MACs) are prepared using economical raw materials or reactants and a procedure for obtaining a series of multimetallic mixed oxides derived from the thermal decomposition of the MACs which comprises: (1) dissolving water-soluble bimetallic and/or trimetallic sources in water, (2) dispersing and homogenizing separate water-insoluble divalent and/or trivalent metal precursors with a high-speed stirrer in order to obtain small and reactive particles; depending on the nature of the water-insoluble divalent and/or trivalent metal precursors, this process can be adjusted to a desired pH, (3) adding the suspension obtained in (2) to solution (1) with the reaction medium still dispersed to facilitate solid particle's reduction/dissociation, and (4) afterwards the slurry is aged for several hours and finally dried. This process enables raw materials or reactants to be easily handled, and eliminates unit operations involving product washing and/or purification steps.
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Lopez-Salinas Esteban
Sanchez-Cantu Manuel
Sanchez-Valente Jaime
Hou Michelle
Instituto Mexicano del Petroleo
Roylance Abrams Berdo & Goodman L.L.P.
Vanoy Timothy C
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