Loading patent…
AssigneeOM Group, Inc. (Mooney Chemicals, Inc.)
InventorsThomas E. Nappier, Michele A. Glink
Estimating the term…
A stabilized aqueous solution for use in preparing catalysts is described which comprises water, at least one Group VIB element, at least one Group VIII element, an inorganic phosphorus-containing acid, and an amount of a reducing agent effective to dissolve the Group VIB and Group VIII elements and stabilize the solution. Examples of useful reducing agents include hydrazine compounds and hydroxylamine compounds. A method of preparing catalysts utilizing the stabilized aqueous solutions also is described and comprises (A) impregnating a foraminous carrier with an aqueous solution comprising water, at least one Group VIB element, at least one Group VIII element, an inorganic phosphorus-containing acid, and an amount of a reducing agent effective to dissolve the Group VIB and Group VIII elements and stabilize the solution wherein said Group VIB and Group VIII elements are present as salts capable of converted to their oxides upon calcination; and (B) thereafter drying and calcining the impregnated carrier to convert the Group VIB and Group VIII elements to their oxides.
A method of preparing a catalyst comprising at least one first metal or metal oxide selected from molybdenum and tungsten and at least one Group VIII metal or metal oxide which comprises the steps of
A stabilized aqueous solution for use in preparing catalysts comprising water, at least one first element selected from molybdenum and tungsten, at least one Group VIII element, an inorganic phosphorus-containing acid, and an amount of a reducing agent selected from hydrazine compounds or hydroxylamine compounds effective to dissolve the first and Group VIII elements and stabilize the solution, wherein the solution contains a sufficient amount of the first and Group VIII metal salts to provide a catalyst containing from about 10% to about 35% by weight of combined metal.
A stabilized aqueous solution for use in preparing catalysts wherein said solution is prepared by a process comprising admixing components comprising water, at least one first element selected from molybdenum and tungsten, at least one Group VIII element selected from nickel and cobalt, an inorganic phosphorus acid, and a sufficient amount of a reducing agent selected from hydrazine or hydroxylamine phosphate to dissolve the first and Group VIII elements and stabilize the solution, where the solution contains a sufficient amount of the first and Group VIII metal salts to provide a catalyst containing from about 10% to about 35% by weight of combined metal.
A stabilized aqueous solution for use in preparing catalysts formed on admixing components comprising water, from about 10 to about 30 weight percent of molybdenum trioxide, from about 1 to about 10 weight percent nickel carbonate, from about 5 to about 15 weight percent of orthophosphoric acid and from about 0.05 to about 0.5 weight percent of hydrazine.
Dependencies are inferred from the claim text.